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LEFT—GASOLINE TRACTOR HAULING STEEL DECKED TRAILER. RIGHT—ELECTRIC LIFT TRUCK WITH LOADED rubber tires and automatic couplers. The large fleet of four-wheel trucks is provided to avoid shifting trucks from one deck of the pier to another as the cargo may necessitate. It is found more economical to have addi- tional equipment than to pay for shifting the equipment back and forth. The newer four-wheel trucks are of a special design worked out by the Jarka Corp. and the manufac- turer. These trucks have a platform three by six feet of heavy wood con- struction and are fitted with roller bearings. In loading the ships, the slingloads are made up at the pile by piling the freight on platform slings which have bes placed on the trailers. When comp:eted, the slingload is taken to shipside on the trailer, by hand if the haul is short and with a trac- tor if the haul is long. Special type of gear has been built so that cargo can be handled without damage. Considering the manner in which jintercoastal cargo is packed, the American-Hawaiian record of 0.88 of one per cent of freight revenue paid out in claims shows that the attention given to design of gear and the meth- od of handling, has been effective. One of the illustrations shows a type of sling used in handling canned goods and similar packaged cargo. Because of the frequent service and the large tonnage handled each year over the terminal, two gangs are worked in some of the hatches and in hatches of thirty feet and over as many as three gangs are worked. This has resulted in some excellent cargo handling records. One 9000-ton ship worked eleven gangs in five hatches and handled 5000 tons in 19 hours. The working of this large number of gangs is made possible by the booms which are fitted to the upper deck of the dock and by the ten electric winches which supple- ment the ships winches. Additional winches are rented from the Bush Terminal Co. as needed. The winches have a capacity of 5000 pounds and SKID PLATFORM operate at a speed of 185 feet a min- ute. The proper use of tractors and trailers was demonstrated recently on the American-Hawaiian dock in the loading of a 500-ton shipment of soda ash. The slingloads were made up at the pile of a canvas sling on the steel decked trailers. The trailers were hauled to ship’s side, a distance of approximately 350 feet, by gasoline tractors. Two to three trailers were hauled at one time. At ship’s side the trailers were dropped by the tractors. As a slingload was hoisted clear, the trailer was pushed out of the way by the longshoreman and a train of empty trailers made which was taken back to the pile on the return trip of the tractor. In an operation of this character, the auto- matic couplers with which the tractor and trailers are equipped, expedite the handling of the equipment. The soda ash was handled at an average of 40 tons an hour. (Continued on Page. 60) UPPER DECK OF PIER 6 AMERICAN HA MARINE REVIEW—March, 1930 WAIIAN STEAMSHIP PIER—SKID PLATFORMS LOADED READY FOR MOVEMENT 51