My issue is you have over-detailed the boat. If it was sitting at the dock, between patrols, all would be fine. To have all of the boxes, barrels, crates, etc, on deck while underway just wouldn't happen. In a combat situation, the boat needed to be ready for action at a moment's notice with the crew able to be at action stations in seconds. With all the things on deck and the crew's attention else wear, such as petting the cat, the boat could be heavily damaged, or worse, before it could be able to return fire