If I remember correctly the height limit was 6' 4". I"m 6' 1" and believe me, after a couple of weeks you would know when to duck your head. There weren't really that many overhead obstructions that couldn't be avoided.
As far as weight......well we had a machinst mate who was too big to get into some of the inspection holes in the trim tanks....we would just find someone skinnier to go in for him.
One night we went on liberty, came back and found him drunk and out on the deck. Afraid he might roll off the deck and drown, we had to come up with something. As all hatches leading below had ladders no one could carry him below, so we rigged up a block and tackle and lower him down. Course no one wanted to carry him to his bunk so we just left him at the bottom of the ladder to sleep it off............
