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More Karnings For Owners - of Cargo-Carrying Craft TRUSSWELD— minimum investment for maximum carrying capacity Owners of oil tankers, lighters, derricks, car floats and barges are adopting the new TRUSSWELD system of construction for craft carrying liquid cargo in the hold or dry cargo on deck... Owners approve the economy of craft so constructed for first cost, maintenance and operation. For shoal water use, equal carrying capacity is attained with less draft. Less power is required for propelling or towing. These advantages are secured by maximum carrying capacity for minimum hull weight. The TRUSS- WELD system eliminates all riveting and practically all heavy members such as keels, ribs, beams and DECK PLATE PLATE SIDE BOTTOM PLATE Midship section showing internal structure of angle iron members running fore and aft, athwartship and vertical, electrically welded to each other at intersections and to the skin of the hull. The enlargement in the circle shows a typical junction of three members even frames. It produces a stronger and more rigid craft of greater capacity for its dimensions. The superiority of TRUSSWELD over all other | systems of steel construction is being demonstrated in vessels operated by some of the world’s largest | owners of tanks and barges. For certain types of craft, TRUSSWELD may often replace wood con- | struction where cost is a primary consideration. The REVERSE CHANNEL system lapwelded—no butt welds For carrying dry cargo below decks, the new REVERSE CHANNEL system’ assures _ great strength and rigidity of hull construction; maximum carrying capacity for minimum hull weight; economy of first cost, maintenance and operation. United Dry Docks, Inc.—exclusive Atlantic Coast licensee of Kjekstad patented TRUSSWELD and REVERSE CHANNEL Systems of tank and barge construction—is ready to figure, build and guarantee. THE REVERSE CHANNEL SYSTEM Enlargement in circle shows the lapwelding method UNITED DRY DOCKS INCORPORATED 11 BROADWAY MARINE REVIEW—March, 1931 Digby 4-0500 NEW YORK 73