[Llarry]

The submarine Drum (SS 228), originally commissioned in 1941, preserved as a memorial. The Drum appears much as it would have been during World War II with gun armament in addition to torpedo tubes fore and aft.

In those pre-snorkel days, submarines spent most of their time on the surface and the hull form was optimized for surfaced speed using the Diesels. With a modern submarine, the boat spends much more time submerged and the hull form is optimized for underwater speed.