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October, 1915 20 buckets, having a 3-foot dip at light draft. The paddle boxes are _ steel throughout. The power, considering the displacement of the boat, was designed to give added safety in avoiding col- lisions in the fogs which are frequent at certain seasons of the year, and to give ‘added speed, the boat being capable of making 16 miles per hour. Auxiliaries The auxiliary apparatus includes the following: 2 four-stage turbine boiler feed pumps. 1 10-inch turbine circulating pump, 1 3-inch turbine hot well pump. 1 8x12x20-inch dry air pump ‘watertight compartments. 1 spiral flow service. condenser. 1 Wainwright feed water heater. 2 Knowles vertical oil pumps inches, for oil burning system. 1 Knowles vertical pump of same size, fresh water service. 2 Knowles bilge and fire pumps 12x 8%x10 inches, of vertical duplex type. There are two 35 kilowatt General Electric turbine generators for lighting service. These generators are mounted above the platform deck, high enough to be out of reach of flood water, and could easily be shifted to the main deck. One of the interesting features of the boat’s construction is found in the 12 bulkheads, seven of which extend upward 17 feet to the main deck and five to the platform deck,8 feet. The latter is watertight. The bulkheads are of watertight construction and throughout of 5/l6-inch steel plates, stiffened vertically with 5x3x %-inch angles, spaced on about 2-foot centers. The spacing of the bulkheads are such for the 54%x3%x5 for consist - that any two compartments could be flooded through collision or other acci- dent without danger of sinking. The action of the flood water in such an event is shown in Fig. 4. The bulkheads are spaced as follows: 28; 20 28; 12,° 24-724, 16, 24,24. 20 THE MARINE REVIEW GREENER Reese Cm: La SSO a a 7 aa FIG. 4— ALTERATION IN TRIM AND DRAFT WHEN TWO ADJACENT COMPARTMENTS ARE DAM- AGED AND FLOODED and 30 feet. The collision bulkheads are spaced 8 feet from either sternpost. The inside of the hull below the water line and the bulkheads are covered with a protective coating for preserving the steel. Vents in each compartment permit the entrance of air and in connection with the dry air pumps, maintain a con- stant circulation, preventing foulness and mold. A guard extends all the way around the hull of the boat, affording added protection against collision and acting as a bumper when entering the slips. Main Deck and Cabin Construction The interior of the boat is excep- tionally well lighted, owing to the large window space. A special side wall de- sign was necessary to effect this arrange- 387 ment. The scantlings are wood with steel tie rods on the inside. The frame- work comprises steel stanchions and stringers of 3-inch I-beams on the ladies’ cabin while on the main deck the stanchions and stringers are 4-inch H- sections. The flooring is Oregon pine, 2% inches thick, laid over steel sheeting. The cracks are covered: with marine glue, giving a tight joint, not affected by heat. No sheathing is used. Life Preservers The life preservers in the ladies’ cabin — ate placed under the seats. On the main deck downstairs, the preservers are placed in racks overhead and are easily released by drop cords. This plan is said to have originated with this com- pany. By this system, air is permitted to circulate between the preservers and they are more easily inspected than by a locker system. There are four metal lifeboats, two forward and two. aft. These boats are 18 x 5% x 2% feet and can accommodate 13 persons each. While the trip across the bay is a com- paratively short one, every provision has been made for the comfort of the pas- sengers. Numerous seats are placed on the upper deck, the majority of which are protected overhead from rain and sun. The cabin is finished in- mahogany and the upper ventilating windows are of stained glass. There is a restaurant on the lower deck and _ gentlemen’s smoking rooms. The .plans for the boat were evolved by the late William McKenzie, who for a number of years was superintendent of the ferry and river steamer service of the company. The construction was under the personal supervision of the present superintendent, J. G. Camp. The thoroughness of the work is attested by the fact that when the boat took the Platform Deca i= = 10) [| 2 aman t aaa alalala = ala elelalela] ZAI ae a “<P SX i aeenceRtel Goodoodo . rw Nass TTP I 4 She ee ee PP LU Re ae nee rt ote eel ee TrIr ° Sinica General Fahebaiasse Length Over Al) Lae i Stern Post Width Over Gerda: Molded Beam .....; Dept FIG. 5—-GENERAL ARRANGEMENT AND PROFILE OF SANTA CLARA