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November, 1909 TAE Marine Review BaTrLesHip NortH Dakota LEAVING THE ForE RIVER YARD. NORTH DAKOTA THE FASTEST BATTLESHIP. The battleship North Dakota under- went her. trials Nov. 3 and 4 and proved herself to be the fastest of her type afloat. On her standardization trial sue developed a maximum speed of 22.25 knots and an average speed during five fans of 21.83 knots. brake horsepower. was 35,150, her aver- age power 33,875. The power necessary to drive her 21 knots is 25,600 at 263 'revolutions per minute. After leaving the Fore river yard she was taken to the Boston navy yard where her bottom was cleaned and painted and a set of Monel metal propellers fitted in place of the manganese. The North Dakota's sister ship, the trials on tler maximum Delaware, underwent her Oct. 23, attaining a maximum speed of 21.98 knots. The comparisons be- tween the trial performances of the QP North Dakota and Delaware are as follows: North Del- Dakota.. | aware. Fastest speed. 2... bocce. se 22,.20 21.98 Mean "Speed: 42.2705 - =. 21.833 21.44 Best:. horsepower. «...0ss0006% 35,150 30,000 Mean horsepower ...... hae OS.070 28,578 NEW FLOATING DOCK. A contract for a floating dock for dealing with Brazilian Dreadnoughts has been awarded by the Brazilian gov- ernment to Messrs. Vickers Sons & 'Maxim, Limited, Barrow-in-Furness. The dock will be of Messrs. Clark and Standfield's double-sided self-docking type, having a length of S50--tt. 6in., a clear entrance width of 100 ft., and a depth of 31 ft. The dock will consist of a pontoon and two parallel side _ walls, and the whole will be divided into three sections. The center section of the pontoon will have a length of 165 ft, and the two end sections a length of 170 ft. each, their outer ex- tremities being built in the form of a oint or bow. The engine deck, on which will be placed the boilers, engines, dy- namos, and pumping machinery, will be about 20 ft, below the top deck of the walls, while above the engine deck there will be cooking and other accom- modation for 700 men and officers of any ship. The dock will have a lift- ing power of 22,000 tons, and _ the pumping machinery and other engines will consist of two identical installa- tions, one in each wall. The plant in each wall will consist of three boilers and three engines and pumps, one in each section. Tenders were submitted to the Brazilian government by three British, one American, one French, and three German firms. James Tregarthen &Son, New York, have awarded a contract to Robert Palmer & Son Co. of Noank, Conn., for a drydock which will be 161 ft. long with two out-riggers each 35 ft. long. The same company have also received contract for a steamer 166 ft. long for service between New York and Ellis island.