Comment by moftz

Probably more along the lines of a ship requires X number of crew working 24 hours a day to run properly and the ship can only hold a crew of less than 3X (8 hours shifts, 7 days a week). It's not going to be a simple 9-5 job for everyone on the ship but there should at least be some scientific justification behind whatever shift scheduling the Navy decides on. Do people work better when doing long shifts with long breaks in between or short shifts with short breaks? Can people doing day shifts work longer than people doing night shifts? Do people work better with regular shifts or with ones in different lengths? It's obviously going to be different for every position, anyone making critical decisions shouldn't be overworked but the guy cleaning toilets isn't going to do too much damage being tired. It all boils down to how much can you work someone until it becomes an issue.