K-250 Submarine

The sub was designed by retired US Navy World War II submarine captain George Kittredge.

[1] It is a basic solid submarine that has been used by researchers, salvage divers,[2] and private enthusiasts.

[3] Kittredge Industries began building subs in 1970 at a plant in Warren, Maine.

[5] The K-250 has a 150-pound drop weight, that can be released to make the sub float to the surface if all the other systems have failed.

If released, having the lead broken up into smaller bricks makes them easier to recover by a SCUBA diver if they are not too deep.

A K-250 personal submarine designed and built by George W. Kittredge. This submarine is on display in South Thomaston, Maine, as a memorial to Kittredge.