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Latest Data on New Marine Work Information on New Ships Ordered—Building and Repair Con- tracts Let — Sales — Reconditioning — Launchings — Trial Trips navy by the Dravo Contracting Co. at its Wilmington, Del., plant and then delivered to the navy yard, Philadelphia, for final fitting out, has now arrived at its base at San Diego, Calif. The name of the new dock is Arp-1. The Army and Navy Journal. in its Nov. 17 issue gives the follow- ing interesting information concern- ing the new dock: Designed to accommodate destroy- ers, submarines, mine sweepers and light craft of the fleet, the floating dry dock is expected to prove an import- ant adjunct to the fighting strength of the force afloat in time of war; especi- ally when th2 fleet is operating in for- eign waters. Towed with the train of the fleet, it is expected to, in some de- gree, make up for the lack of naval bases, in that it can patch up disabled auxiliary vessels. Leaving the Philadelphia navy yard Oct. 20, the Arp-1 towed by the U.S. 5S. Brinck, made a record run on its ini- tial voyage averaging about 10 knots. The dock arrived at the Panama canal, Oct. 28, left Balboa for San Diego, Nov. 1, arriving Nov. 14. The Arp-1 has steering gear to facili- tate towing, but no self-propelling ma- chinery. She is 393% feet overall, with a beam of 60 feet, and has a dead- weight tonnage of approximately 2200 tons. It has a typical ship’s bow with a hinged gate at the stern. The hull is subdivided for its sta- bility into 16 watertight compartments which can be flooded independently or in combination for sinking the dock to Te floating dry dock built for the receive a ship. A pumping plant con- sisting of four 20-inch pumps is pro- vided for pumping out the compart- ments to raise the dock. The pumps and the main valves con- trolling the piping system are electric- ally operated and remotely controlled from central bench boards. The dock is provided with diesel electric genera- tors which furnish current for operat- ing various motors, with air compres- sors for general use in connection with repair work performed in the dock, with electric capstans for handling the ship in and out of dock and with fire and flushing water systems, fresh water systems, and ship sewerage sys- tems. The steering gear, flying bridge and stern gate are operated by hydraulic power. Water level indicators for all com- partments are located centrally above the main control bench boards by which the operator may control the trim of the dock intelligently. The dry dock was authorized by the act of May 14, 1930, which also con- tained appropriations for its construc- tion. A contract for its construction for the sum of $352,680 was awarded to the Dravo Contracting Co., Wilm- ington, Del., on March 9, 1934. In a recent heavy storm at Seattle the 152 foot, wooden stern wheel steamer HARVESTER turned _ turtle. Other methods failing to right the ves. sel she was towed upside down for half a mile, a sand bunker built on the offside and with the aid of the LAM Shell dredge AwLaBaMa, described in the April issue of Martine Review, said to be the first all arc welded dredge ever built. 49 feet; depth, 9 feet; weight, 681 tons. Length 140 feet; beam, 4 yht Built by Ingalls Iron Works Co., Birm- ingham, Ala., for the McWilliams Dredging’ Co., New Orleans. The Lincoln Electric Co., Cleveland 26 MARINE REVIEw—December, 1934 Photo, courtesy of port’s 125-ton shear leg derrick the wreck was finally turned over and righted. Lines under the hull served to accomplish the task which tugs had been unable to do. Northwest Shipbuilding Built at a cost of $125,000, the wood- en motorship BRowN BEAR was launch- ed Nov. 7 at the Puget Sound plant of Winslow Marine Railway & Shipbuild- ing Co. She was sponsored by Miss Elizabeth Terhune, daughter of H. W. Terhune, executive officer of the Alaska Game commission. The Brown BEAR will serve as mother ship of a new fleet being completed for the United States bureau of biological sur- vey and the Alaska Game commission. The vessel took the water entirely completed and ready for service. She is 115 feet in length equipped with two 200 horsepower Washington diesel engines. The GRIZZLY BEAR, 58 feet long and to have a 90 horsepower same type diesel, is being completed at the Schertzer yards, Seattle. Lake Washington Shipyards sub- mitted the low bid of $37,511 for re- building the army mine planter GEN. J. FRANKLIN BELL. No announcement has been made by the lighthouse de- partment in the macter of awards for converting Columbia lightship No. 88 from steam to diesel power. The total of the tenders exceeded the amount available. Lake Washington Shipyards was low for reconstruction and Wash- ing Iron Works, Seattle, for furnish- ing a 350 horsepower diesel engine. The coast guard cutter MOHAWK, last of three under construction for the United States coast guard by The Pusey & Jones Corp., Wilmington, Del., was launched on Oct. 23. She is to be commissioned early in December. The United States engineer office, Louisville, Ky., will receive bids un- til Dec. 11 for furnishing two 750 horsepower propelling engines, one 1600 horsepower dredge engine and one 575-kilowatt generating set, all full diesel type. The United States engineer office, Duluth, Minn., on Noy. 20 opened bids for drydocking, removing the present boiler, installing a new watertube boiler, and making certain alterations and overall repairs to the United States tug Essayons, located at Sandusky, O.