cooper9411 wrote:
Jerry O'Neill wrote:
Not recovered yet and I think I recall the Navy doesn't want to recover them. I believe that there are more than two down there. i think I remember 6 went down with the airship. BTW, the Akron and Macon were airships (dirigibles) not blimps. Metal frame inside kept the shape and held the gas bags.
Jerry
O.K. sorry for mis-speaking, dirigibles, dirigibles, dirigibles, got it. Thank you for the correction, I got this round

Dirigible means 'steerable', that includes blimps and semi-rigids as well as Zeppelin-types. As opposed to 'free' balloons which go with the wind and are controllable only to altitude (hopefully)
Blimps are non-rigid airships. They have no internal structure, and maintain their shape by inflation of the gas bags and ballonets. The gondola is supported by cables.
Semi-rigid airships (like the Norge, Roma etc) have a keel structure to which the gondola, gas cells, engines etc are attached, but still maintain their shape mostly by inflation.
Rigid airships, generically 'Zeppelins' use a complete framework to maintain shape and distribute the loads of flying equipment.