46 CFR §171.114
- (a)Penetrations and openings in watertight bulkheads must—
- (1)Be kept as high and as far inboard as practicable; and
- (2)Have means to make them watertight.
- (b)Watertight bulkheads must not have sluice valves.
- (c)Each main traverse watertight bulkhead must extend to the bulkhead deck.