AFAIK, there are no tides in vanilla ArmA3 maps. There's a mod for adding tides to vanilla maps though, if you want to try out what the tides would be like.

Yeah, it seems like this issue can only happen through voluntary action on the player's part. "Don't button-mash" is an acceptable solution.

This seems to happen because the turreted part of the model is slightly too low, not because of the actual geometry. Raising that part a tiny bit would make it articulate without clipping.