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WISTARIA—Lighthouse Tender—Single Screw—Diesel Electric DESCRIPTION of steel construc- tion the WISTARIA is used in the lighthouse service on the Dela- ware river. The main propelling unit is diesel electric. Two diesel engine driven generators supply 250- volt direct current for the 240 shaft horse- power at 400 r.p.m. electric motor direct connected to propeller, Name—WISTARIA Owner—U. S. Lighthouse Service Builder—United Drydocks Ine. Naval Architect—U. S. Lighthouse Service Launched—Feb. 3, ’33; comp., Mar. 30, ’33 Classification—Owner’s requirements HULL PARTICULARS Length over all, 121 feet, 4 inches; length between perpendiculars, 111 feet, 8 inches; breadth molded, 25 feet; depth molded, 9 feet; draft, 6 feet, 8 inches; displacement loaded, 323 tons; cargo capacity, 70 tons; bunker diesel fuel oil capacity in gallons, 3300; speed in service, 9% knots, MACHINERY PARTICULARS Main Engines—Two, 6-cylinder, 4-cycle, solid injection, 8% x 11 inches, diesel engines built by Winton Engine Corp. Hach engine, devel- oping 175 horsepower at 450: revolutions per minute, is direct connected to a 100-kilowatt General Electric direct current generator, Main Propulsion Motor—oOne, of 240 shaft horsepower, 250 volt, direct current, General Electric motor. This motor is direct connected, through a Kingsbury thrust, with the propeller. Auxiliary Generator—One, 7%%-kilowatt, di- rect current, General Electric generator, driven by a Winton diesel engine. AUXILIARY EQUIPMENT Pumps—Dean; Winton Windlass—Lidgerwood Mfg. Co. Hoister—Lidgerwood Mfg. Co. Steering Gear—hand—Lidgerwood Mfg. Co. i H oO iO Electric Motors—General Electric; Diehl Propeller—United Dry Docks Ine. Refrigeration—Brunswick; Frigidaire Heating Boiler—Almy Anchors—Baldt Anchor Chain & Forge Co. Vialves and Fittings—Crane Co. Direction Indicator—Alexander McNab Revolution Counters—Alexander McNab Compressors—Winton; General Electric Galley Equipment—Stamford Foundry Co. Brass, Copper—American Brass Co. REMARKS The WisTariIA, a single screw, diesel electric propelled steel vessel designed specially for the duties of the lighthouse service in the waters of Delaware bay and river, was delivered early in April, 1933. The contract for building this vessel was awarded late in July, 1932, to United Dry Docks Inc. at a low bid of $129,900. De- livery was called for within 240 days. She has replaced the small wooden steamer Woodbine, embodies many improvements, and will be principally used in the construction of new navigation aids and in servicing existing lights and buoys, For heavy lifts there is fitted a 38-foot boom of 10 tons capacity served by a four-drum elec- tric driven hoist of Lidgerwood design and con- struction, The superstructure, of steel construction, is located mainly over the after half of the vessel leaving a spacious forward deck for handling buoys and other lighthouse equipment. The pilot house is located on the forward end of the superstructure, = ony MARINE REvIEw—April, 1934 27