3 Words to use with watertight

But professionally (the distinction must not be pushed too far, she was not built in watertight compartments)

Nevertheless, the watertight bulkheads remained intact, and by confining the influx of water to a single compartment so much buoyancy was preserved that, though the ship heeled over to starboard and was maimed, she remained afloat, and might have continued to fight her guns, provided always that no injury had been sustained by her machinery, a point which these experiments do not touch.

Unlike Pymeut proper, its cabins were built entirely above ground, of logs unchinked, its roofs of watertight birch-bark.

3 Words to use with  watertight