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Description: seaplane wrecking derrick, steel
Date Sunk: December 1957
Dive Site Conditions
Depth in feet: maximum 30
In 1965, Brad Luther reported that this vessel was situated with its keel up.
The YSD designation of this class of floating crane originally applied to a self-propelled seaplane recovery vessel used at Naval airstations. YSD-11, 20, 22, and 23, constructed at the Charlestown Navy Shipyard were of this class. Later the classification was applied to non-self-propelled seaplane wrecking derricks.