American self-propelled seaplane wrecking derrick YSD11 in 1945

Source

Dimensions 104.5 x 31.2 feet. Crane capacity 10 tons. Allocation 1^st district. Built by Navy Yard, Boston, Massachusetts, USA.

Source

Bureau of Ship. Navy Department. Ships’ Data US Naval Vessels. Vol III. Auxiliary, district craft and unclassified vessels, 15 April 1945