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36 Name— VIOLET Owner—United States Bureau of Lighthouses Builder—Manitowoc Shipbuilding Corp. Naval Architect—Bureau of Lighthouses Launched—April 12, ’30; completed, Aug. 22. Classification—Owner’s requirements HULL PARTICULARS Length over all, 170 feet; length between per- pendiculars, 163 feet 6 inches; breadth molded, 32 feet; depth molded, 13 feet; draft, 8 feet 6 inches; displacement loaded, 770 tons in gait water; bunker fuel oil capacity in tons, 100 of which 80 tons are in the bunkers and 20 tons in the settling tanks; speed 13% statute miles per hour. MACHINERY PARTICULARS Main Engines..— Two, 3-cylinder, inverted, triple expansion steam engines built by Mani- towoce Shipbuilding Corp.; size, 11% x 19 x 32 inches x 24 inches stroke; indicated horsepower at 140 revolutions per minute is 450 for each engine. Boilers—Two, Babcock & Wilcox water tube marine boilers of the small tube type, with a total heating surface of 4880 square feet; working pressure TZ 4 rasa C) XT Pot ——S a DESCRIPTION Of conservative en- gineering design with reciprocating steam engines and watertube boilers of nominal pressure, this vessel is still of much interest in her refinements and the high order of workmanship. Her station is on the waters of Chesepeake bay. The derrick equipment re- ceived special atten- tion, the boom and mast having a lifting capacity of 20 tons. 225 pounds; fuel, oil. The oil burners and the furnace firebrick were also supplied by the Bab- cock & Wilcox Co. Auxiliary Generators—Two of Engberg type, 7% k.w. each, furnished by Troy Engine & Machine Co. AUXILIARY EQUIPMENT Pumps—Worthington Pump & Mach. Corp. Windlass—Hyde Windlass Co. Winches—Lidgerwood Mfg. Co. Steering Engine—Hyde Windlass Co. Propellers—Manitowoe Shipbuilding Corp. Refrigerating Machinery—Frigidaire Oil Burning Equipment—-Schutte & Koerting with Babcock & Wilcox Mayflower burners Telegraphs—Chas. Cory Corp. Feed Water Treatment—Filtrators Co. Windows—Kearfott Engineering Co. Revolution Counters—Alexander McNab Anchor Chain—National Malleable Co. Shaft Sleeves—Shenango-Penn Mold Co. The Vioter was built especially for the fifth lighthouse district, the largest in the country and which in- ~ cludes Baltimore harbor and its ap- 1 . proaches. fi) ld : Sess Sa S| DES ee MARINE REvIEw—April, 1931 ;