Can you please give Baine a helping hand?

Baine's job is to monitor the sound waves of The Nautilus. The way the ship sounds is a good indicator of the overall well-being of the ship. Recently, Baine had apparently detected a strange sound coming through the walls on the lower deck. Could this be an ominous sign of things to come?

When Baine detects the strange sound waves coming from The Nautilus, he asks Bart, the keeper of the Watchtower, whether he's noticed any changes in sight. The watchtower is apparently on the eastern end of the shipping dock so I'd better look around carefully.

Bart says that he's noticed some strange movements. I wonder what he saw?