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462 THE MARINE REVIEW October, 1919 ---~ Boller_ Room- D Coal | Bunker FIG.. 3--DECK VIEW OF TUNNEL-STERN STEEL TOWBOAT FOR USE ON THE WARRIOR RIVER 'driven unifs and operate noncon- densing at 80 pounds steam pressure. Fig 2 illustrates the type of barge designed for use on the Mississippi. These vessels will be used in con- junction with the towboats previously described. The specifications call for a vessel 230 feet long, 45 feet molded Deam, li feet molded depth. The cargo box is 184 feet long x 37 feet wide. Steel construction is used through- out and all structural material used is to meet American Bureau of Shipping standards. The lines of this craft show a scow form with easy raking ends and rounded bilges. The de- sign reduces resistance in towing up stream. The cargo box is provided with 16 hatches, eight to each side, 14 x 16 feet, and eight double sliding doors in each side. The available cargo space extends from the deck to the floor giving a total depth of 19 feet. The hold is divided into 18 compartments by means of wing and transverse bulkheads. The wing compartments are oil tight. Pumping arrangements are provided for handling bulk oil cargo. The main deck is equipped with towing bitts, chocks, cleats, etc. The type of tunnel stern towboat designed for use on the Warrior _ river is shown in Figs. 3 and 4. This craft is 140 feet long, 24 feet molded beam, 8 feet 9 inches molded depth and is designed to draw 6 feet of water loaded to maximum capacity. i 'The vessel is to be single deck, fitted with a continuous deck house 112 feet long, which leaves sufficient room at the bow and stern for handling lines. The forward part of the deck house contains quarters for the engineers, pilots, watchmen and part of the crew while the after end of the house accommodates the white mess room, galley stores, quarters and mess room for the colored crew. The upper deck house accom- modates the captain. whose quarters are just abaft the pilot house. The pilot house is arranged to give the helmsman a clear view in all direc- tions. It is fitted with a powerful searchlight for use in river work at night. The general type of construction has been made as simple as possible to reduce the initial cost. Attention has been given to longitudinal stiff- ness of the hull. This is accomplished by stanchions and diagonal braces. Heavy oak fenders are carried along each side to protect the hull when docking and in case of collision. Special attention has been given to the living quarters of the crew. These are steam heated and lighted by electricity. On deck are arranged the hecessary « number-: of cleats, -- bitts, chocks and capstans to facilitate han- dling the vessel and taking care of tows. Four rudders are provided, two for each shaft, one rudder is placed ferward and one aft of each propeller. The vessel is powered by two triple-expansion inverted-type upright engines with cylinders 1034 x 17 x 27- inch bore with 18-inch stroke. At 200 revolutions per minute, each en- gine develops 400 horsepower. Steam is supplied by two boilers arranged to burn coal. The usual auxiliaries are provided. oe The craft shown in Fig. 5 is a twin screw tunnel stern self-propelled steel barge designed for use on the Tom- bigbee, Alabama and Black Warrior rivers. It is 280 feet long, 49 feet molded beam, 10 feet molded depth with a maximum draft of <7. feet, The hull is made with the usual barge section with bows designed for easy entrance. Cargo will be carried on the main deck. An open cargo box located 'forward of amidships accommodates 1600 tons of coal. At each end of the coal space, enclosures are provided for package freight. The forward en- closure is 24 feet long and is equipped with two hatches 12 x 16 feet with a sliding door in each side. The after enclosure is 50 feet long with four hatches, two 12 x 12-feet and two 12 x 20 feet, with two doors to each side. The crew quarters are forward, below deck, with accommodations for four deck hands, four firemen, cook and messman, The engine and boiler rooms and officers quarters are all located aft. The pilot house and captain's state- room are on top of the upper after es ec FIG. 4--SIDE ELEVATION OF TUNNEL-STERN STEEL TOWBOAT FOR USE ON THE WARRIOR RIVER Hitin