use & GSS Explorer 



BuUt in 1904 for the Coast and Geodetic Survey at Wilmington. 

 Transferred to the Navy in 1918, the Explorer wis assigned to 

 patrol duty off Alaska during World War 1. She was returned to 

 the Survey in 1919 and retired from service in 1939. 



Length: 135' Displacement: 450 tons 



use & GSS Hydrographer 



A wooden-hull steam vessel built in 1901 at Port Jefferson, New 

 York for the Coast and Geodetic Survey. The first Survey ship to 

 bear the name Hydrographer. 



Length: 101' Displacement: 146 tons 



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