YSD-11-class crane ship

While listed to service seaplanes the crane was able to lift small boats and large engines also.

Other seaplanes built in mass production were the 1,366 Martin PBM Mariner, 749 Short Sunderland and 345 Grumman G-21 Goose.

The ship had one American Hoist & Derrick model 685 rotating crane.

Ship power was from two Superior model MRDB-8 200 HP Diesel engines with two propellers, 640shp.

(Bridge and building builder): Omaha Steel Works in Omaha, Nebraska built (Bridge builder, the only ships built):[59] Missouri Valley Bridge & Iron Co. in Leavenworth, Kansas built: YSD - Seaplane Wrecking Derrick were given the US Navy nicknamed Mary Annes because of their resemblance to the character in the children's book Mike Mulligan and His Steam Shovel by Virginia Lee Burton.

Seaplane Wrecking Derrick YSD-14
Seaplane Wrecking Derrick YSD-14
Seaplane Wrecking Derrick YSD-11, in 1940
YSD-19 a Mary Ann recovering the wreckage of Japanese Aichi D3A Val dive bomber that crashed in the water at Ford Island Berth F-2 during Pearl Harbor attack , Dec. 1941.