In Star Trek IV, why did the Bounty go back to a time when whales were already rare?Why does the aluminium need to be transparent?How did Kirk get the whales out?Why didn't Spock save the Romulan Empire by going back in time?Were the HMS Bounty footprints inspired by crop circles?Why didn’t park-goers bump into the invisible HMS Bounty more often?Why do we see the stairs in the cloaked ship in Star Trek 4?When were Dilithium Crystals first mentioned in Star Trek?Which Earth species are extinct in the Star Trek universe?How were the whales able to breathe?Why is time travel so rare in the Star Trek universe?Why did they need a water tank to transport the humpback whales back to the future?

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In Star Trek IV, why did the Bounty go back to a time when whales were already rare?


Why does the aluminium need to be transparent?How did Kirk get the whales out?Why didn't Spock save the Romulan Empire by going back in time?Were the HMS Bounty footprints inspired by crop circles?Why didn’t park-goers bump into the invisible HMS Bounty more often?Why do we see the stairs in the cloaked ship in Star Trek 4?When were Dilithium Crystals first mentioned in Star Trek?Which Earth species are extinct in the Star Trek universe?How were the whales able to breathe?Why is time travel so rare in the Star Trek universe?Why did they need a water tank to transport the humpback whales back to the future?













22















In Star Trek IV: The Voyage Home, the Bounty travels back to what looks to be Earth circa 1985 to acquire a breeding pair of whales. Yet at this time, whales were already in danger and people were sophisticated enough that the Bounty might be detected and possibly destroyed.



Why did they not travel back to 900 AD or so before mass whaling or missiles became a thing?










share|improve this question









New contributor




Bob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.















  • 9





    Was the movie made in 1985?

    – Adamant
    yesterday






  • 8





    @Adamant it was made in 1986. Obviously that was the out of universe reason for setting it then. I think the OP is asking if there was ever an in universe reason given, for example something to do with 1986 being somehow easier to target a time-travel pattern to because of arcane subspace reasons, etc.

    – Robert Columbia
    yesterday







  • 1





    @RobertColumbia - I was just wondering because if it was made earlier or later that could have been interesting.

    – Adamant
    yesterday






  • 2





    Later would've risked going past when they were extinct or tripping over the Eugenics Wars which were in full swing twenty years ago according to TOS history.

    – IG_42
    yesterday






  • 2





    There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

    – M. A. Golding
    13 hours ago















22















In Star Trek IV: The Voyage Home, the Bounty travels back to what looks to be Earth circa 1985 to acquire a breeding pair of whales. Yet at this time, whales were already in danger and people were sophisticated enough that the Bounty might be detected and possibly destroyed.



Why did they not travel back to 900 AD or so before mass whaling or missiles became a thing?










share|improve this question









New contributor




Bob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.















  • 9





    Was the movie made in 1985?

    – Adamant
    yesterday






  • 8





    @Adamant it was made in 1986. Obviously that was the out of universe reason for setting it then. I think the OP is asking if there was ever an in universe reason given, for example something to do with 1986 being somehow easier to target a time-travel pattern to because of arcane subspace reasons, etc.

    – Robert Columbia
    yesterday







  • 1





    @RobertColumbia - I was just wondering because if it was made earlier or later that could have been interesting.

    – Adamant
    yesterday






  • 2





    Later would've risked going past when they were extinct or tripping over the Eugenics Wars which were in full swing twenty years ago according to TOS history.

    – IG_42
    yesterday






  • 2





    There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

    – M. A. Golding
    13 hours ago













22












22








22


1






In Star Trek IV: The Voyage Home, the Bounty travels back to what looks to be Earth circa 1985 to acquire a breeding pair of whales. Yet at this time, whales were already in danger and people were sophisticated enough that the Bounty might be detected and possibly destroyed.



Why did they not travel back to 900 AD or so before mass whaling or missiles became a thing?










share|improve this question









New contributor




Bob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












In Star Trek IV: The Voyage Home, the Bounty travels back to what looks to be Earth circa 1985 to acquire a breeding pair of whales. Yet at this time, whales were already in danger and people were sophisticated enough that the Bounty might be detected and possibly destroyed.



Why did they not travel back to 900 AD or so before mass whaling or missiles became a thing?







star-trek the-voyage-home






share|improve this question









New contributor




Bob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Bob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 10 mins ago









Peter Mortensen

21219




21219






New contributor




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asked yesterday









BobBob

1113




1113




New contributor




Bob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor





Bob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Bob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







  • 9





    Was the movie made in 1985?

    – Adamant
    yesterday






  • 8





    @Adamant it was made in 1986. Obviously that was the out of universe reason for setting it then. I think the OP is asking if there was ever an in universe reason given, for example something to do with 1986 being somehow easier to target a time-travel pattern to because of arcane subspace reasons, etc.

    – Robert Columbia
    yesterday







  • 1





    @RobertColumbia - I was just wondering because if it was made earlier or later that could have been interesting.

    – Adamant
    yesterday






  • 2





    Later would've risked going past when they were extinct or tripping over the Eugenics Wars which were in full swing twenty years ago according to TOS history.

    – IG_42
    yesterday






  • 2





    There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

    – M. A. Golding
    13 hours ago












  • 9





    Was the movie made in 1985?

    – Adamant
    yesterday






  • 8





    @Adamant it was made in 1986. Obviously that was the out of universe reason for setting it then. I think the OP is asking if there was ever an in universe reason given, for example something to do with 1986 being somehow easier to target a time-travel pattern to because of arcane subspace reasons, etc.

    – Robert Columbia
    yesterday







  • 1





    @RobertColumbia - I was just wondering because if it was made earlier or later that could have been interesting.

    – Adamant
    yesterday






  • 2





    Later would've risked going past when they were extinct or tripping over the Eugenics Wars which were in full swing twenty years ago according to TOS history.

    – IG_42
    yesterday






  • 2





    There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

    – M. A. Golding
    13 hours ago







9




9





Was the movie made in 1985?

– Adamant
yesterday





Was the movie made in 1985?

– Adamant
yesterday




8




8





@Adamant it was made in 1986. Obviously that was the out of universe reason for setting it then. I think the OP is asking if there was ever an in universe reason given, for example something to do with 1986 being somehow easier to target a time-travel pattern to because of arcane subspace reasons, etc.

– Robert Columbia
yesterday






@Adamant it was made in 1986. Obviously that was the out of universe reason for setting it then. I think the OP is asking if there was ever an in universe reason given, for example something to do with 1986 being somehow easier to target a time-travel pattern to because of arcane subspace reasons, etc.

– Robert Columbia
yesterday





1




1





@RobertColumbia - I was just wondering because if it was made earlier or later that could have been interesting.

– Adamant
yesterday





@RobertColumbia - I was just wondering because if it was made earlier or later that could have been interesting.

– Adamant
yesterday




2




2





Later would've risked going past when they were extinct or tripping over the Eugenics Wars which were in full swing twenty years ago according to TOS history.

– IG_42
yesterday





Later would've risked going past when they were extinct or tripping over the Eugenics Wars which were in full swing twenty years ago according to TOS history.

– IG_42
yesterday




2




2





There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

– M. A. Golding
13 hours ago





There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

– M. A. Golding
13 hours ago










4 Answers
4






active

oldest

votes


















18














This is addressed in the film's official novelisation which contains a slightly extended version of Kirk's conversations on board the Bounty. Mr Scott was making the plans to turn the hold into a holding tank, per the Captain's orders and evidently worked out that he'd need materials from twentieth century (onwards).




"Scott here, admiral. Wi' the proper materials--the proper twentieth-century materials--I'll be able to build ye a tank."



"Thank you, Mr. Scott."




Coupled with the known extinction date of the humpback whale, this gives them a pretty solid date range to aim for with their time warp maneuver. Although they had quite a broad range in mind ("late twentieth century"), Spock's calculations turned out to be pretty accurate. Presumably he'd have been just as happy with 1975 as 1999.




"Ready to engage computer, admiral," Spock said.



"What's our target in time?" Jim asked.



"The late twentieth century."



"Surely you can be more specific."







share|improve this answer






























    14














    To transport the whales the crew used transparent aluminium for their makeshift holding tank which they had to "invent" themselves and produce using 1985 technology which wouldn't have existed in 900 AD.






    share|improve this answer


















    • 22





      They used perspex for the tank. They exchanged the information to produce transparent aluminium to acquire it though.

      – Jon Clements
      yesterday







    • 1





      Knowing the location of the whales on the planet might have been part of the reason, where they were before they were released they were easy to find at a known location and close together which must help when beaming them

      – SpacePhoenix
      22 hours ago






    • 5





      This answer is straight-up incorrect. The crew swapped the plans for transparent aluminium for a big sheet of perspex.

      – Valorum
      21 hours ago







    • 1





      @Valorum The details are wrong, but the general idea is right.

      – Bobby
      21 hours ago






    • 8





      @Bobby - Except that Perspex was invented in the 1930s and would have been available in large sheets from the 1950s onwards.

      – Valorum
      20 hours ago


















    9














    I'm not completely familiar with the "time sling-shot" maneuver, but there are multiple possible reasons for that.



    Going further back is dangerous



    It might be that ~1980 is roughly the earliest year they can safely travel. Traveling any further back might strain the Bird of Prey (also dubbed "rust bucket") too much and you all might die. Any further into the future and you might not have the chance to encounter whales.



    Time travel is not an exact science



    From what we can see in the movie they never specify to what year they want to go. Quite the opposite, directly after the jump this dialog happens:




    Kirk: Picture, please.



    [Picture of Earth appears in the viewscreen.]



    Kirk: Earth. But when? Spock?



    Spock: Judging by the pollution content of the atmosphere, I believe we have arrived at the latter half of the twentieth century.




    So they know how to roughly jump back in time, but they can't target a certain year or period.



    Time travel is an exact science



    In the TOS episode "Tomorrow is yesterday" the crew of the Enterprise learns the mechanics required to jump through time by accident. They complete a maneuver around a black star which hurls them back into the ~1960s on Earth. At the end, they can execute the same maneuver around Sol to travel back to their time.



    Unbeknownst to them, this time travel method might have a fixed time span of roughly ~300 years you can jump backwards and forwards with, as the dates neatly line up. Or maybe they knew about it, but it was never established on screen.



    Repairs and Extensions



    Last but not least, the Bird of Prey is ill equipped to transport whales. That means that you need the resources to remodel it on the fly in the past. That excludes anything before ~1960 I guess, because since then we have made vast advancements in technology. Additionally, Earth is in a pretty bad shape starting from ~1991 with Eugenic War waging and killing tens of million of people, and undoubtedly binding a lot of resources. So you want to land before that, because afterwards you'd either end up in one of three situations:



    • You can't acquire the resources required because they are not available because of the war.

    • Whales are already extinct.

    • The technology has advanced so far that you have a hard time doing your thing.

    With these restrictions in mind, the period around ~1980 sounds like quite a good place to be.






    share|improve this answer


















    • 2





      There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

      – M. A. Golding
      13 hours ago


















    4














    They had a narrow timeframe that would be useful to them.



    • They needed to arrive late enough that the whale-tank materials they needed to modify the ship would be readily available -- post-1950s. Not just "possible", but in stock locally.

    • They needed an economy robust and entreprenurial enough that their oddball material purchases needs wouldn't pop up any red flags on any government's radar (for instance doing this in the Soviet Union was right out) - so 1950s and up.

    • If they had any problems with the vessel's drive systems (and they did), they needed a modern enough society where technology, electronics, nuclear things, etc. were well-developed and readily available (so 1970s at least, and the later the better!)


    • Whale science needed to be solidly established, with plenty of experts available - because they needed to catch whales, and they had little chance of getting Klingon sensors to tell them the difference between a gray whale and a sperm whale.

      • Even better if culture had become affluent enough that there were aquatic zoos like Sea World, so we're definitely into the 1970s.


    • Preferably, racism (including war sentiments) have declined considerably, so Uhura, Sulu, Chekov and Spock will have an easier time, so 1970s and the later the better. It would also help if the Cold War was abating, so 1980s.

    • Can't go later than 1991, because in Trek canon, the Eugenics Wars began.





    share|improve this answer























    • There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

      – M. A. Golding
      13 hours ago






    • 4





      @M.A.Golding 1 conceded. 2 the limiting factor is not transparent material but an economy robust enough to not notice or ask questions when somebody wants a bunch of steel, plastic, whatever. The Depression and WWII both made that impossible. 3. Reading books is great for executive briefer summaries, but doesn't even begin to replace a real expert with experience and currency when you're actually doing it.

      – Harper
      12 hours ago










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    4 Answers
    4






    active

    oldest

    votes








    4 Answers
    4






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    18














    This is addressed in the film's official novelisation which contains a slightly extended version of Kirk's conversations on board the Bounty. Mr Scott was making the plans to turn the hold into a holding tank, per the Captain's orders and evidently worked out that he'd need materials from twentieth century (onwards).




    "Scott here, admiral. Wi' the proper materials--the proper twentieth-century materials--I'll be able to build ye a tank."



    "Thank you, Mr. Scott."




    Coupled with the known extinction date of the humpback whale, this gives them a pretty solid date range to aim for with their time warp maneuver. Although they had quite a broad range in mind ("late twentieth century"), Spock's calculations turned out to be pretty accurate. Presumably he'd have been just as happy with 1975 as 1999.




    "Ready to engage computer, admiral," Spock said.



    "What's our target in time?" Jim asked.



    "The late twentieth century."



    "Surely you can be more specific."







    share|improve this answer



























      18














      This is addressed in the film's official novelisation which contains a slightly extended version of Kirk's conversations on board the Bounty. Mr Scott was making the plans to turn the hold into a holding tank, per the Captain's orders and evidently worked out that he'd need materials from twentieth century (onwards).




      "Scott here, admiral. Wi' the proper materials--the proper twentieth-century materials--I'll be able to build ye a tank."



      "Thank you, Mr. Scott."




      Coupled with the known extinction date of the humpback whale, this gives them a pretty solid date range to aim for with their time warp maneuver. Although they had quite a broad range in mind ("late twentieth century"), Spock's calculations turned out to be pretty accurate. Presumably he'd have been just as happy with 1975 as 1999.




      "Ready to engage computer, admiral," Spock said.



      "What's our target in time?" Jim asked.



      "The late twentieth century."



      "Surely you can be more specific."







      share|improve this answer

























        18












        18








        18







        This is addressed in the film's official novelisation which contains a slightly extended version of Kirk's conversations on board the Bounty. Mr Scott was making the plans to turn the hold into a holding tank, per the Captain's orders and evidently worked out that he'd need materials from twentieth century (onwards).




        "Scott here, admiral. Wi' the proper materials--the proper twentieth-century materials--I'll be able to build ye a tank."



        "Thank you, Mr. Scott."




        Coupled with the known extinction date of the humpback whale, this gives them a pretty solid date range to aim for with their time warp maneuver. Although they had quite a broad range in mind ("late twentieth century"), Spock's calculations turned out to be pretty accurate. Presumably he'd have been just as happy with 1975 as 1999.




        "Ready to engage computer, admiral," Spock said.



        "What's our target in time?" Jim asked.



        "The late twentieth century."



        "Surely you can be more specific."







        share|improve this answer













        This is addressed in the film's official novelisation which contains a slightly extended version of Kirk's conversations on board the Bounty. Mr Scott was making the plans to turn the hold into a holding tank, per the Captain's orders and evidently worked out that he'd need materials from twentieth century (onwards).




        "Scott here, admiral. Wi' the proper materials--the proper twentieth-century materials--I'll be able to build ye a tank."



        "Thank you, Mr. Scott."




        Coupled with the known extinction date of the humpback whale, this gives them a pretty solid date range to aim for with their time warp maneuver. Although they had quite a broad range in mind ("late twentieth century"), Spock's calculations turned out to be pretty accurate. Presumably he'd have been just as happy with 1975 as 1999.




        "Ready to engage computer, admiral," Spock said.



        "What's our target in time?" Jim asked.



        "The late twentieth century."



        "Surely you can be more specific."








        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 20 hours ago









        ValorumValorum

        411k11129923215




        411k11129923215























            14














            To transport the whales the crew used transparent aluminium for their makeshift holding tank which they had to "invent" themselves and produce using 1985 technology which wouldn't have existed in 900 AD.






            share|improve this answer


















            • 22





              They used perspex for the tank. They exchanged the information to produce transparent aluminium to acquire it though.

              – Jon Clements
              yesterday







            • 1





              Knowing the location of the whales on the planet might have been part of the reason, where they were before they were released they were easy to find at a known location and close together which must help when beaming them

              – SpacePhoenix
              22 hours ago






            • 5





              This answer is straight-up incorrect. The crew swapped the plans for transparent aluminium for a big sheet of perspex.

              – Valorum
              21 hours ago







            • 1





              @Valorum The details are wrong, but the general idea is right.

              – Bobby
              21 hours ago






            • 8





              @Bobby - Except that Perspex was invented in the 1930s and would have been available in large sheets from the 1950s onwards.

              – Valorum
              20 hours ago















            14














            To transport the whales the crew used transparent aluminium for their makeshift holding tank which they had to "invent" themselves and produce using 1985 technology which wouldn't have existed in 900 AD.






            share|improve this answer


















            • 22





              They used perspex for the tank. They exchanged the information to produce transparent aluminium to acquire it though.

              – Jon Clements
              yesterday







            • 1





              Knowing the location of the whales on the planet might have been part of the reason, where they were before they were released they were easy to find at a known location and close together which must help when beaming them

              – SpacePhoenix
              22 hours ago






            • 5





              This answer is straight-up incorrect. The crew swapped the plans for transparent aluminium for a big sheet of perspex.

              – Valorum
              21 hours ago







            • 1





              @Valorum The details are wrong, but the general idea is right.

              – Bobby
              21 hours ago






            • 8





              @Bobby - Except that Perspex was invented in the 1930s and would have been available in large sheets from the 1950s onwards.

              – Valorum
              20 hours ago













            14












            14








            14







            To transport the whales the crew used transparent aluminium for their makeshift holding tank which they had to "invent" themselves and produce using 1985 technology which wouldn't have existed in 900 AD.






            share|improve this answer













            To transport the whales the crew used transparent aluminium for their makeshift holding tank which they had to "invent" themselves and produce using 1985 technology which wouldn't have existed in 900 AD.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered yesterday









            IG_42IG_42

            1,0281814




            1,0281814







            • 22





              They used perspex for the tank. They exchanged the information to produce transparent aluminium to acquire it though.

              – Jon Clements
              yesterday







            • 1





              Knowing the location of the whales on the planet might have been part of the reason, where they were before they were released they were easy to find at a known location and close together which must help when beaming them

              – SpacePhoenix
              22 hours ago






            • 5





              This answer is straight-up incorrect. The crew swapped the plans for transparent aluminium for a big sheet of perspex.

              – Valorum
              21 hours ago







            • 1





              @Valorum The details are wrong, but the general idea is right.

              – Bobby
              21 hours ago






            • 8





              @Bobby - Except that Perspex was invented in the 1930s and would have been available in large sheets from the 1950s onwards.

              – Valorum
              20 hours ago












            • 22





              They used perspex for the tank. They exchanged the information to produce transparent aluminium to acquire it though.

              – Jon Clements
              yesterday







            • 1





              Knowing the location of the whales on the planet might have been part of the reason, where they were before they were released they were easy to find at a known location and close together which must help when beaming them

              – SpacePhoenix
              22 hours ago






            • 5





              This answer is straight-up incorrect. The crew swapped the plans for transparent aluminium for a big sheet of perspex.

              – Valorum
              21 hours ago







            • 1





              @Valorum The details are wrong, but the general idea is right.

              – Bobby
              21 hours ago






            • 8





              @Bobby - Except that Perspex was invented in the 1930s and would have been available in large sheets from the 1950s onwards.

              – Valorum
              20 hours ago







            22




            22





            They used perspex for the tank. They exchanged the information to produce transparent aluminium to acquire it though.

            – Jon Clements
            yesterday






            They used perspex for the tank. They exchanged the information to produce transparent aluminium to acquire it though.

            – Jon Clements
            yesterday





            1




            1





            Knowing the location of the whales on the planet might have been part of the reason, where they were before they were released they were easy to find at a known location and close together which must help when beaming them

            – SpacePhoenix
            22 hours ago





            Knowing the location of the whales on the planet might have been part of the reason, where they were before they were released they were easy to find at a known location and close together which must help when beaming them

            – SpacePhoenix
            22 hours ago




            5




            5





            This answer is straight-up incorrect. The crew swapped the plans for transparent aluminium for a big sheet of perspex.

            – Valorum
            21 hours ago






            This answer is straight-up incorrect. The crew swapped the plans for transparent aluminium for a big sheet of perspex.

            – Valorum
            21 hours ago





            1




            1





            @Valorum The details are wrong, but the general idea is right.

            – Bobby
            21 hours ago





            @Valorum The details are wrong, but the general idea is right.

            – Bobby
            21 hours ago




            8




            8





            @Bobby - Except that Perspex was invented in the 1930s and would have been available in large sheets from the 1950s onwards.

            – Valorum
            20 hours ago





            @Bobby - Except that Perspex was invented in the 1930s and would have been available in large sheets from the 1950s onwards.

            – Valorum
            20 hours ago











            9














            I'm not completely familiar with the "time sling-shot" maneuver, but there are multiple possible reasons for that.



            Going further back is dangerous



            It might be that ~1980 is roughly the earliest year they can safely travel. Traveling any further back might strain the Bird of Prey (also dubbed "rust bucket") too much and you all might die. Any further into the future and you might not have the chance to encounter whales.



            Time travel is not an exact science



            From what we can see in the movie they never specify to what year they want to go. Quite the opposite, directly after the jump this dialog happens:




            Kirk: Picture, please.



            [Picture of Earth appears in the viewscreen.]



            Kirk: Earth. But when? Spock?



            Spock: Judging by the pollution content of the atmosphere, I believe we have arrived at the latter half of the twentieth century.




            So they know how to roughly jump back in time, but they can't target a certain year or period.



            Time travel is an exact science



            In the TOS episode "Tomorrow is yesterday" the crew of the Enterprise learns the mechanics required to jump through time by accident. They complete a maneuver around a black star which hurls them back into the ~1960s on Earth. At the end, they can execute the same maneuver around Sol to travel back to their time.



            Unbeknownst to them, this time travel method might have a fixed time span of roughly ~300 years you can jump backwards and forwards with, as the dates neatly line up. Or maybe they knew about it, but it was never established on screen.



            Repairs and Extensions



            Last but not least, the Bird of Prey is ill equipped to transport whales. That means that you need the resources to remodel it on the fly in the past. That excludes anything before ~1960 I guess, because since then we have made vast advancements in technology. Additionally, Earth is in a pretty bad shape starting from ~1991 with Eugenic War waging and killing tens of million of people, and undoubtedly binding a lot of resources. So you want to land before that, because afterwards you'd either end up in one of three situations:



            • You can't acquire the resources required because they are not available because of the war.

            • Whales are already extinct.

            • The technology has advanced so far that you have a hard time doing your thing.

            With these restrictions in mind, the period around ~1980 sounds like quite a good place to be.






            share|improve this answer


















            • 2





              There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

              – M. A. Golding
              13 hours ago















            9














            I'm not completely familiar with the "time sling-shot" maneuver, but there are multiple possible reasons for that.



            Going further back is dangerous



            It might be that ~1980 is roughly the earliest year they can safely travel. Traveling any further back might strain the Bird of Prey (also dubbed "rust bucket") too much and you all might die. Any further into the future and you might not have the chance to encounter whales.



            Time travel is not an exact science



            From what we can see in the movie they never specify to what year they want to go. Quite the opposite, directly after the jump this dialog happens:




            Kirk: Picture, please.



            [Picture of Earth appears in the viewscreen.]



            Kirk: Earth. But when? Spock?



            Spock: Judging by the pollution content of the atmosphere, I believe we have arrived at the latter half of the twentieth century.




            So they know how to roughly jump back in time, but they can't target a certain year or period.



            Time travel is an exact science



            In the TOS episode "Tomorrow is yesterday" the crew of the Enterprise learns the mechanics required to jump through time by accident. They complete a maneuver around a black star which hurls them back into the ~1960s on Earth. At the end, they can execute the same maneuver around Sol to travel back to their time.



            Unbeknownst to them, this time travel method might have a fixed time span of roughly ~300 years you can jump backwards and forwards with, as the dates neatly line up. Or maybe they knew about it, but it was never established on screen.



            Repairs and Extensions



            Last but not least, the Bird of Prey is ill equipped to transport whales. That means that you need the resources to remodel it on the fly in the past. That excludes anything before ~1960 I guess, because since then we have made vast advancements in technology. Additionally, Earth is in a pretty bad shape starting from ~1991 with Eugenic War waging and killing tens of million of people, and undoubtedly binding a lot of resources. So you want to land before that, because afterwards you'd either end up in one of three situations:



            • You can't acquire the resources required because they are not available because of the war.

            • Whales are already extinct.

            • The technology has advanced so far that you have a hard time doing your thing.

            With these restrictions in mind, the period around ~1980 sounds like quite a good place to be.






            share|improve this answer


















            • 2





              There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

              – M. A. Golding
              13 hours ago













            9












            9








            9







            I'm not completely familiar with the "time sling-shot" maneuver, but there are multiple possible reasons for that.



            Going further back is dangerous



            It might be that ~1980 is roughly the earliest year they can safely travel. Traveling any further back might strain the Bird of Prey (also dubbed "rust bucket") too much and you all might die. Any further into the future and you might not have the chance to encounter whales.



            Time travel is not an exact science



            From what we can see in the movie they never specify to what year they want to go. Quite the opposite, directly after the jump this dialog happens:




            Kirk: Picture, please.



            [Picture of Earth appears in the viewscreen.]



            Kirk: Earth. But when? Spock?



            Spock: Judging by the pollution content of the atmosphere, I believe we have arrived at the latter half of the twentieth century.




            So they know how to roughly jump back in time, but they can't target a certain year or period.



            Time travel is an exact science



            In the TOS episode "Tomorrow is yesterday" the crew of the Enterprise learns the mechanics required to jump through time by accident. They complete a maneuver around a black star which hurls them back into the ~1960s on Earth. At the end, they can execute the same maneuver around Sol to travel back to their time.



            Unbeknownst to them, this time travel method might have a fixed time span of roughly ~300 years you can jump backwards and forwards with, as the dates neatly line up. Or maybe they knew about it, but it was never established on screen.



            Repairs and Extensions



            Last but not least, the Bird of Prey is ill equipped to transport whales. That means that you need the resources to remodel it on the fly in the past. That excludes anything before ~1960 I guess, because since then we have made vast advancements in technology. Additionally, Earth is in a pretty bad shape starting from ~1991 with Eugenic War waging and killing tens of million of people, and undoubtedly binding a lot of resources. So you want to land before that, because afterwards you'd either end up in one of three situations:



            • You can't acquire the resources required because they are not available because of the war.

            • Whales are already extinct.

            • The technology has advanced so far that you have a hard time doing your thing.

            With these restrictions in mind, the period around ~1980 sounds like quite a good place to be.






            share|improve this answer













            I'm not completely familiar with the "time sling-shot" maneuver, but there are multiple possible reasons for that.



            Going further back is dangerous



            It might be that ~1980 is roughly the earliest year they can safely travel. Traveling any further back might strain the Bird of Prey (also dubbed "rust bucket") too much and you all might die. Any further into the future and you might not have the chance to encounter whales.



            Time travel is not an exact science



            From what we can see in the movie they never specify to what year they want to go. Quite the opposite, directly after the jump this dialog happens:




            Kirk: Picture, please.



            [Picture of Earth appears in the viewscreen.]



            Kirk: Earth. But when? Spock?



            Spock: Judging by the pollution content of the atmosphere, I believe we have arrived at the latter half of the twentieth century.




            So they know how to roughly jump back in time, but they can't target a certain year or period.



            Time travel is an exact science



            In the TOS episode "Tomorrow is yesterday" the crew of the Enterprise learns the mechanics required to jump through time by accident. They complete a maneuver around a black star which hurls them back into the ~1960s on Earth. At the end, they can execute the same maneuver around Sol to travel back to their time.



            Unbeknownst to them, this time travel method might have a fixed time span of roughly ~300 years you can jump backwards and forwards with, as the dates neatly line up. Or maybe they knew about it, but it was never established on screen.



            Repairs and Extensions



            Last but not least, the Bird of Prey is ill equipped to transport whales. That means that you need the resources to remodel it on the fly in the past. That excludes anything before ~1960 I guess, because since then we have made vast advancements in technology. Additionally, Earth is in a pretty bad shape starting from ~1991 with Eugenic War waging and killing tens of million of people, and undoubtedly binding a lot of resources. So you want to land before that, because afterwards you'd either end up in one of three situations:



            • You can't acquire the resources required because they are not available because of the war.

            • Whales are already extinct.

            • The technology has advanced so far that you have a hard time doing your thing.

            With these restrictions in mind, the period around ~1980 sounds like quite a good place to be.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 21 hours ago









            BobbyBobby

            2,0251316




            2,0251316







            • 2





              There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

              – M. A. Golding
              13 hours ago












            • 2





              There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

              – M. A. Golding
              13 hours ago







            2




            2





            There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

            – M. A. Golding
            13 hours ago





            There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

            – M. A. Golding
            13 hours ago











            4














            They had a narrow timeframe that would be useful to them.



            • They needed to arrive late enough that the whale-tank materials they needed to modify the ship would be readily available -- post-1950s. Not just "possible", but in stock locally.

            • They needed an economy robust and entreprenurial enough that their oddball material purchases needs wouldn't pop up any red flags on any government's radar (for instance doing this in the Soviet Union was right out) - so 1950s and up.

            • If they had any problems with the vessel's drive systems (and they did), they needed a modern enough society where technology, electronics, nuclear things, etc. were well-developed and readily available (so 1970s at least, and the later the better!)


            • Whale science needed to be solidly established, with plenty of experts available - because they needed to catch whales, and they had little chance of getting Klingon sensors to tell them the difference between a gray whale and a sperm whale.

              • Even better if culture had become affluent enough that there were aquatic zoos like Sea World, so we're definitely into the 1970s.


            • Preferably, racism (including war sentiments) have declined considerably, so Uhura, Sulu, Chekov and Spock will have an easier time, so 1970s and the later the better. It would also help if the Cold War was abating, so 1980s.

            • Can't go later than 1991, because in Trek canon, the Eugenics Wars began.





            share|improve this answer























            • There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

              – M. A. Golding
              13 hours ago






            • 4





              @M.A.Golding 1 conceded. 2 the limiting factor is not transparent material but an economy robust enough to not notice or ask questions when somebody wants a bunch of steel, plastic, whatever. The Depression and WWII both made that impossible. 3. Reading books is great for executive briefer summaries, but doesn't even begin to replace a real expert with experience and currency when you're actually doing it.

              – Harper
              12 hours ago















            4














            They had a narrow timeframe that would be useful to them.



            • They needed to arrive late enough that the whale-tank materials they needed to modify the ship would be readily available -- post-1950s. Not just "possible", but in stock locally.

            • They needed an economy robust and entreprenurial enough that their oddball material purchases needs wouldn't pop up any red flags on any government's radar (for instance doing this in the Soviet Union was right out) - so 1950s and up.

            • If they had any problems with the vessel's drive systems (and they did), they needed a modern enough society where technology, electronics, nuclear things, etc. were well-developed and readily available (so 1970s at least, and the later the better!)


            • Whale science needed to be solidly established, with plenty of experts available - because they needed to catch whales, and they had little chance of getting Klingon sensors to tell them the difference between a gray whale and a sperm whale.

              • Even better if culture had become affluent enough that there were aquatic zoos like Sea World, so we're definitely into the 1970s.


            • Preferably, racism (including war sentiments) have declined considerably, so Uhura, Sulu, Chekov and Spock will have an easier time, so 1970s and the later the better. It would also help if the Cold War was abating, so 1980s.

            • Can't go later than 1991, because in Trek canon, the Eugenics Wars began.





            share|improve this answer























            • There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

              – M. A. Golding
              13 hours ago






            • 4





              @M.A.Golding 1 conceded. 2 the limiting factor is not transparent material but an economy robust enough to not notice or ask questions when somebody wants a bunch of steel, plastic, whatever. The Depression and WWII both made that impossible. 3. Reading books is great for executive briefer summaries, but doesn't even begin to replace a real expert with experience and currency when you're actually doing it.

              – Harper
              12 hours ago













            4












            4








            4







            They had a narrow timeframe that would be useful to them.



            • They needed to arrive late enough that the whale-tank materials they needed to modify the ship would be readily available -- post-1950s. Not just "possible", but in stock locally.

            • They needed an economy robust and entreprenurial enough that their oddball material purchases needs wouldn't pop up any red flags on any government's radar (for instance doing this in the Soviet Union was right out) - so 1950s and up.

            • If they had any problems with the vessel's drive systems (and they did), they needed a modern enough society where technology, electronics, nuclear things, etc. were well-developed and readily available (so 1970s at least, and the later the better!)


            • Whale science needed to be solidly established, with plenty of experts available - because they needed to catch whales, and they had little chance of getting Klingon sensors to tell them the difference between a gray whale and a sperm whale.

              • Even better if culture had become affluent enough that there were aquatic zoos like Sea World, so we're definitely into the 1970s.


            • Preferably, racism (including war sentiments) have declined considerably, so Uhura, Sulu, Chekov and Spock will have an easier time, so 1970s and the later the better. It would also help if the Cold War was abating, so 1980s.

            • Can't go later than 1991, because in Trek canon, the Eugenics Wars began.





            share|improve this answer













            They had a narrow timeframe that would be useful to them.



            • They needed to arrive late enough that the whale-tank materials they needed to modify the ship would be readily available -- post-1950s. Not just "possible", but in stock locally.

            • They needed an economy robust and entreprenurial enough that their oddball material purchases needs wouldn't pop up any red flags on any government's radar (for instance doing this in the Soviet Union was right out) - so 1950s and up.

            • If they had any problems with the vessel's drive systems (and they did), they needed a modern enough society where technology, electronics, nuclear things, etc. were well-developed and readily available (so 1970s at least, and the later the better!)


            • Whale science needed to be solidly established, with plenty of experts available - because they needed to catch whales, and they had little chance of getting Klingon sensors to tell them the difference between a gray whale and a sperm whale.

              • Even better if culture had become affluent enough that there were aquatic zoos like Sea World, so we're definitely into the 1970s.


            • Preferably, racism (including war sentiments) have declined considerably, so Uhura, Sulu, Chekov and Spock will have an easier time, so 1970s and the later the better. It would also help if the Cold War was abating, so 1980s.

            • Can't go later than 1991, because in Trek canon, the Eugenics Wars began.






            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 13 hours ago









            HarperHarper

            1,8611819




            1,8611819












            • There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

              – M. A. Golding
              13 hours ago






            • 4





              @M.A.Golding 1 conceded. 2 the limiting factor is not transparent material but an economy robust enough to not notice or ask questions when somebody wants a bunch of steel, plastic, whatever. The Depression and WWII both made that impossible. 3. Reading books is great for executive briefer summaries, but doesn't even begin to replace a real expert with experience and currency when you're actually doing it.

              – Harper
              12 hours ago

















            • There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

              – M. A. Golding
              13 hours ago






            • 4





              @M.A.Golding 1 conceded. 2 the limiting factor is not transparent material but an economy robust enough to not notice or ask questions when somebody wants a bunch of steel, plastic, whatever. The Depression and WWII both made that impossible. 3. Reading books is great for executive briefer summaries, but doesn't even begin to replace a real expert with experience and currency when you're actually doing it.

              – Harper
              12 hours ago
















            There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

            – M. A. Golding
            13 hours ago





            There are flaws with the answers because: 1. It is is may belief that different calendars are used in different productions and thus there is no guarantee that the Eugenics wars happen in the 1990s AD. 2. Transparent material is not necessary for the whale tank; steel will do. 3. Any local library will have books about whales including information about where Humpback whales can be found.

            – M. A. Golding
            13 hours ago




            4




            4





            @M.A.Golding 1 conceded. 2 the limiting factor is not transparent material but an economy robust enough to not notice or ask questions when somebody wants a bunch of steel, plastic, whatever. The Depression and WWII both made that impossible. 3. Reading books is great for executive briefer summaries, but doesn't even begin to replace a real expert with experience and currency when you're actually doing it.

            – Harper
            12 hours ago





            @M.A.Golding 1 conceded. 2 the limiting factor is not transparent material but an economy robust enough to not notice or ask questions when somebody wants a bunch of steel, plastic, whatever. The Depression and WWII both made that impossible. 3. Reading books is great for executive briefer summaries, but doesn't even begin to replace a real expert with experience and currency when you're actually doing it.

            – Harper
            12 hours ago










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