Modern versions include waterproof bulkheads to provide additional flotation.

The aircraft can even be safely water-landed as the spyros provide adequate flotation.

To provide extra flotation allowing smaller floats, lighter structure and less drag, fuel was carried in integral tanks built into the floats.

Measuring 16 to 22 feet, they typically have hatches and bulkheads that provide additional flotation as well as storage space.

Air bags must deploy beneath the cabin to cushion impact or provide flotation.

Waterproof bulkheads in modern kayaks provide flotation in the event of capsize.

Like other Q-ships, she carried empty oil drums and large logs both to simulate cargo and to provide additional flotation if torpedoed.

Once on the water, the large gas tanks could provide flotation, and a saw was carried to drop the dead engine weight if needed.

The lower deck held fuel tanks and nine watertight compartments, only seven of which were needed to provide full flotation.