system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] Why did they have to hide the Enterprise on the bottom of the Nibiru ocean? Couldn't they have stayed in orbit and just used the transporters and/or shuttles if required?

I mean, in retrospect it was convenient that they were there to rescue Spock just in time but what was the point in taking the risk of discovery by having a huge starship hidden underwater when they could have just used the transporters or the shuttlecraft alone to do the job?
gpt
There was some interference from the planet and its volcanic instability, which made transporters unreliable at long distance and shuttles risky. Sulu was a good enough pilot to avoid most of those risks, but even he and pinnacle 23rd century technology couldn't beat a volcano just about to erupt.

But on top of all that, Kirk was ARROGANT. He believed he could accomplish both the objectives of observing the natives AND saving their emerging civilization at the same time, so he chose to hide the Enterprise in the next best place when it was unsafe for an away team to go down from orbit. He believed there was absolutely no way the natives would EVER see him, his crew or his ship and no one would EVER know what he did to accomplish it. He had no idea Spock would include that detail in his report because he arrogantly assumed everyone under his command thought like him. Which was a little easy to think, considering his service on the ship up to that point had been literally spotless. 

So really, it was a stupid decision, made by a captain who should have known better. And Kirk paid for it when he got caught. Only Pike's defense saved his career.