The crew prefers it that way. Union work rules and all that - you understand...
but seriously, the engine power on the ship might not be strong enough, or perhaps there is a node that links the ship sounds that is missing. That is a rather common occurrence, even in the stock game - not to excuse it of course, but it does happen. . The next ship will probably be fine. I have a small screen here right now, and could not see the notepad very well. What ship was that?