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266 : THE Marine REVIEW July, 1910 ' cooks, waiters, porters, oilers, watchmen, and space for stores. The hull is constructed of best mild steel throughout with upper works of wood and with steel divisional bulkheads and casings. Seven steel bulkheads di- vide the hull into eight watertight com- partments. Six of these bulkheads are MARINE REVIEW carried up to the main deck. The lower decks are of steel. Fifteen 2-in. fire hose connections are distributed over the vessel, each equipped with 50 ft. of fire hose. All wash basins and closets are supplied with running water. The ship is fitted with a Wil- liamson steerer shaft, operated from the pilot house, and hand steering arrange- ments are fitted in the pilot house and to the hand capstan aft on the main deck. The hull is built substantially through- out and the leading particulars are 80 92 8 86 88 90 92 9 26 98 100 102 104 106 108 110 112 M4 74 76 «78 Fuel Oil Tank Total 630 Bis. Cr. shown in the midship section. The. stern frame is forged 7 x 4 in. with a 6 x 3344-in. rudder post. The rudder frame is forged from best scrap iron with stock 6 in. in diameter and three 27%-in. pintles. Frames are spaced 24 in. cen- ters and extend from keel to guard in one length, excepting where they are cut out and bracketed to accommodate the fuel tanks. Reverse frames extend from the keel to the main deck in one piece on alternate frames and to the top of the side stringer on the others and are doubled across the engine room floors. Main deck beams are of 5 x 2%4-in. x 10.5-lb. angle bulb on alternate frames, with main deck stringer -plate 36 in. x 12% lb. and 10-lb. plating carried flush with bar seam straps. The guard is formed of 10x3!4x%4-in. channel bars carried entirely around the main deck and riveted to the deck stringers and to the shell plating, and bracketed to the frames and main deck beams. The propelling machinery consists of a four-cylinder, triple-expansion engine, with cylinders 25-41-48 and 48-in. diam- eter, 30-in. stroke, driving a four-bladed bronze propeller 11 ft. 10 in. diameter, 14-ft. pitch, and supplied with steam by four Scotch boilers, using oil fuel. The engine framing consists of cast iron box type rear columns, carrying slipper guides, which are arranged for water circulation; the front columns are of forged steel, finished. The bed plate is of box section in two parts, with main G4 66 68 «470 72 62 54 56 58 60 50 62 Engine Room Hatch LONGITUDINAL SECTION, STEAMER NAPA VALLEY. 34. 86 88 40 42 44 46 48 80 32 28