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————_ Latest Data on New Marine Work Information on New Ships Ordered—Building and Repair Con- tracts Let—Shipping Board Loans Made, Authorized or Pending N MAY 1, 1931 American ship- O yards were building or under contract to build for private owners 183 vessels aggregating 396,886 gross tons compared with 173 vessels aggregating 408,851 gross tons on April 1. The Bethlehem Shipbuilding Corp. had under construction three passenger and cargo vessels totaling 52,500 gross tons for the Oceanic Steamship Co.; three passenger and car29 vessels total- ing 21,600 gross tons for the United States Mail Steamship Co.; and one tanker of 1534 gross tons for the Stand- ard Transportation Co. The Federal Shipbuilding Co. had under construc- tion four passenger and cargo vessels totaling 44,000 gross tons for the Grace line. The Newport News Shipbuilding & Dry Dock Co. was building two pas- senger and cargo vessels, totaling 43,800 gross tons for the-Dollar Steam- ship line; three passenger and cargo vessels totaling 22,500 gross tons for the United Mail Steamship Co.; and also two passenger and cargo vessels totaling 11,400 gross tons for the East- ern Steamship lines. The New York Shipbuilding Co. was building one pas- senger and cargo vessel of 8041 gross tons for the Export Steamship Corp. and two passenger and cargo vessels totaling 60,000 gross tons for the United Line, Inc. Four tankers and one passenger and cargo vessel, total- ing 44,272 gross tons were under con- struction at the Sun Shipbuilding & Dry Dock Co. The four tankers of 9000 gross tons each were building for the Motor Tankship Corp. and the pas- senger and cargo vessel of 8272 gross tons was being built for the American South African line. Plan New Vessels Plans are being considered by the Black Diamond Steamship Corp. which operates the American Diamond line for the construction of $10,000,000 s 3 Vege Ge Ye ae: Cte Single screw motorship Ashmore recently completed by Armstrong Whitworth worth of new ships for the North At- lantic trade. No agreement has been reached regarding the design of, the new ships, but several possible types are being tested by models in the Wash- ington navy yard. The provisional plans call for five 16-knot ships of about 9000 gross tons. Single Screw Motorship Completes Sea Trials The single screw motorship ASH- MORE, built to the order of Skibs A/S Ashmore by Armstrong Whitworth & Co. Ltd. at their Tyne iron shipyard, Willington Quay on Tyne, completed her official trials at sea under fully loaded conditions and with satisfactory results recently. One of new boats built by Jacobson é& - Peterson Inc. for public health service Progressive runs over the measured mile course were carried out and at full power the mean speed obtained was in excess of that guaranteed. The vessel is of the two-deck type with poop, bridge and forecastle with raked stem and elliptical stern, and is fitted with two pole masts. She has an overall length of 408 feet, molded breadth of 54 feet 9 inches and is designed to carry a deadweight of 9000 tons at a draft of about 26 feet at a speed of 11 knots. The main propelling machinery was constructed by Armstrong Whitworth & Co. Ltd. at their Scotswood Works, i a So & Oo. ran successful trials 28 MARINE REVIEw—July, 1931 and consists of a single screw installa- tion with Armstrong Sulzer engine of the single acting, two cycle, air injec. tion, port scavenging type, having six cylinders capable of developing 2250 brake horsepower when running at about 114 revolutions per minute. The engine is enclosed, fitted with crossheads and provided with forced lubrication. The main air compressor and scay- enging pump are driven from an ex- tension of the crankshaft. The cool- ing water pumps, lubricating pumps, bilge and sanitary pumps and sepa- rate lubricating pump for crosshead . lubrication are also driven off the main engine. One single ended cylindrical boiler suitable for burning oil under natural draught is provided for harbor duties, and a small Cochran vertical type boil- er for supplying steam at sea. New Public Health Boat Shown in the accompanying illustra- tion is one of the new boats recently completed by Jackobson and Peterson, Inc., Brooklyn, for the public health service foreign quarantine division from plans prepared by P. W. Clark, naval architect, United States public health service. Construction has start- ed on four additional vessels of this type at the yard of Charles H. Stow- man & Sons, Dorchester, N. J. Canadian Survey Boat The Collingwood Ship Yards Ltd. has been awarded a contract by the Dominion government for the construc- tion and equipment of a hydrographic survey steamer for service on the Paci- fic coast, the price being in the neigh- borhood of $600,000. She will be 214 feet in length, 36 feet wide, and 23 ft. 6 inches deep and fitted with all the latest appliances for marine survey work. There will be two triple expan- sion engines and boilers, giving a speed capacity of 12 knots.