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Section Patrol Craft Photo Archive

Dawn (SP 26)


Motorboat: Built in 1914 by Hehre and Aker of Clason Point, The Bronx, NY; Acquired by the Navy 19 June 1917 and placed in service the same day. Her electric-drive machinery, with a 60 horsepower gasoline engine turning a generator to provide electric power to a 20 horsepower motor, propelled her at a maximum of nine knots speed and also made her suitable for supplying power for use ashore. Dawn's official data card provides the following remarks concerning her power plant: "Available for repair boat, can furnish electric power for lighting, shop, or for repairs" "Main propelling plant consists of 60 HP gas engine driving direct a 40 KW.DC. compound, interpole generator. A 4 KW.DC. generator driven thro gearing 1-1/2 times main generator speed acts as exciter and also to charge 16 Iron Clad (cell) storage battery. Battery and main generator used as a self-starter for engine. Maine generator supplies current up to 220 volts to 20 H.P.D.C. motor directly connected to propeller shaft. The propeller shaft carries an iron friction gear for direct drive from main engine thro 2 idler friction gears (paper)." Returned to her owner, W.T. Donnelley of Brooklyn, NY 4 April 1918. Fate unknown.

Specifications: Displacement unknown; Length 51'; Beam unknown; Draft unknown; Speed 9 kts.; Complement unknown; Armament unknown; Propulsion one 60hp gasoline engine, electric drive, one shaft.


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Size Image Description Source
Dawn 86k Photographed prior to her World War I Navy service.
U.S. Navy photo NH 94460
Naval Historical Center

View the Dawn (SP 26)
DANFS history entry located on the Naval Historical Center web site
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