Corrected entry: In the last quarter of the movie Kirk is beaming on board the "bird of prey" and Doc Gillian is clasping him so she beams on board too. She wants to travel into the future and tricks Kirk out. So long so good, but why is Kirk beaming on board in the first place? One minute earlier the sick Checkov and 3 other crew members walked in using the ship's ramp. Did they close the ramp knowing that Kirk is still standing outside? And the trick with clasping Kirk is OK, but they could just as easily beam her out again or kick her out using the ramp.
Correction: There's any number of reasons the ramp could've been down (loading things for the aquarium) but I always took it as he stayed behind to say goodbye and that they wouldn't want the ramp open for too long in broad daylight, so he beamed up. I also took it that when she grabbed on that was showing she had feelings for him as well and that's why he didn't kick her out.
Corrected entry: It is established at the start of the movie that the Klingon Bird of Prey is the same one that they flew to Vulcan in Star Trek III: Search for Spock. The bridge of the ship however is totally and utterly different to the one shown in the previous movie. There can be no claim to suggest they remodelled it in their time on Vulcan, because everyone still uses the controls with a degree of caution, which they wouldn't do if they modified it to suit their needs.
Correction: There most certainly can be made a claim that they remodeled it on Vulcan. What difference does it make if they, "use the controls with a great deal of caution?" People use brand new things and things they are already familiar with a great deal of caution. And this measurement is highly subjective at best. The crew is likely a bit apprehensive because the "guts" of the ship, for lack of a better term, are still Klingon. Scotty even speaks negatively of the dilithium crystals in the ship at point.
Corrected entry: Starfleet has serious regulations on bringing future technology to inappropriate time periods (which is why the Bird of Prey remained cloaked during it's time in 1986). Chekov being fully aware and considerate of these regulations, considering he has been in Starfleet for about 20 years should have never tossed the Klingon phaser (23rd Century technology) at the navy officer (20th Century person) with full knowledge that he'll never be able to retrieve it. He is too smart for it to have been panic.
Correction: Maybe a bad error in judgment, but a character mistake, not a movie mistake.
Correction: First off, the men interrogating him do not appear to be Navy officers but rather federal agents (FBI, CIA, etc.) The guy asking the questions has some idea of what the phaser is supposed to be, "Make nice, give us the ray gun" so he either deduced that or as is common in interrogations, they're asking the same questions over and over. The interrogators obviously don't believe a word of what Chekov is saying, hence why the one agent tells him, "Go ahead, stun me."
Correction: It's plausible that they started to close the ramp as they boarded the ship, presuming Kirk was walking right behind them & wasn't going to stop to talk to Dr Gillian. It's also plausible that Kirk, being distracted by Gillian's insistence to come aboard, grabbed his communicator to beam up since that was 2nd nature for him. Or he simply didn't want to walk up the ramp, fearing she'd just follow him in. Then he underestimated her leaping onto him during a beam up. As for them just beaming her back to the park, they would wait for Kirk's order, but he gave in & decided she would be beneficial to them if she stayed aboard, thus never giving the order.
envisaged0ne