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May, 1910 vided in the double bottom under the boilers. There will be accommodations for 100 passengers in 29 two-berth and 11 three-berth rooms. There are two cab- ins on the upper deck, one forward and one aft, as shown in the plans. The cabins are connected by a corridor into which the upper deck state rooms open. The galley and dining saloon seating 44 persons are on the main deck aft. The cargo. space is confined to the main deck forward, and amidships on either side of the machinery hatch. Steam will be furnished by two Rob- erts water tube boilers having a total heating surface of 5,000 sq. ft, and working under. 250 Ibs. pressure. Single screw triple expansion main engines have been designed and _ built by the Moran Co. The cylindefs are 17, 28 and 4714 in. in diameter with a stroke of '86 in. At°90 Ro P. M. and 250 Ibs. boiler pressure the engines are expected to indicate 800 H. P. A 12-K. W. electric light outfit and the usual equipment of cargo winches, anchor windlass, steam steering gear, etc., will be supplied, including a surface condenser fitted with independent air pump and independent circulating pump, designed and built by the Moran Co. The hull and machinery, except boil- ers and minor auxiliaries, as stated above, were designed and are _ being built by the Moran Co., of Seattle. The Puget Sound Navigation Co., how- ever, is responsible for the general ar- rangements. SUB-SURFACE TORPEDO BOAT. A new type of war vessel, provided for by Congress in the Naval Appropria- tion Act of last year, will be officially tested by the United States government at Boston shortly. It is known as the Subsurface Torpedo Boat, and is de- signed to be immune from the small gun fire, now relied upon as a protec- tion against ordinary torpedo boafs. It _ consists of a submarine hull, which con- tains all the machinery and torpedo armament, suspended from an unsinkable surface hull divided into compartments packed with, cellulose. Last year's law authorizes the pur- chase of this boat, when the official trial shows that it fills requirements, and the construction under contract of two others of the same type. The boat has had a preliminary trial; Tams, Lemoine & Crane, the consulting architects, re- port that it easily made 18 knots an hour, thus exceeding the required speed by 2 knots. Six tons is the weight of the vessel, and its length is 46 ft. The price which the government has agreed to pay is $22,500. The small subsurface boats can "TAE. MARINE REVIEW be used either for coast defense, or they can be carried on board of the larger vessels in an armored fleet. In time of action they can be launched and di- rected, by day or night, against the enemy's fleet, particularly for operations against ships lying under the protection of land fortifications or mine fields, where expensive battleships should not be risked, as at Manila, Santiago and Port Arthur. In the submarine hull of the new style boat is an eight-cylinder gasoline engine, of 150 H. P. The explosive charge carried for use on hostile vessels is 1,000 lb. of gun cotton. A_ heavily armored conning tower on the surface hull, communicating with the submarine hull, enables the navigator to direct and control the boat's movements. Only two men are required on board. It is estimated that a fleet of 50 of these subsurface torpedo boats will cost about as much as two or three destroy- ers or submarines. As their "cruising radius" is 200 miles, their principal function will probably be for the de- fense of ports and unguarded coast line. The subsurface boat is to be operated in one of two ways. steered within a short torpedo range and aimed at its objective, the crew leaving it in life boats or buoys, or it may be fitted with a submerged bow torpedo tube to discharge the ordinary 18-in. torpedo. The total government appropriation for boats of this type is $445,000. When the first is approved, the navy depart- ment is authorized to contract for two others, one more of the same size and one larger and faster--a $400,000 "sub- surface seagoing destroyer." The inventor of the new war vessel is Clarence L. Burger, who received the degree of civil engineer from Princeton in 1885. FRENCH BATTLESHIPS OF THE NEW PROGRAM. An interesting article by M. Laubeuf in the French journal Le Yacht contains ie Te ips re ae SAA i az Either it may be LL faces CUE: 191 the following particulars of the new French battleships, the construction of which is about to be sanctioned by the French Parliament: Length B. P., 540 ft.; maximum breadth at the° water line, 88.5 ft.; maximum draught aft, 29.5 ft.; total displacement loaded, 23,100 tons. The disposition of the armament and armor will be seen from Fig. 1. The armament consists of twelve 12.2-in. guns placed in 'six turrets (two at each end on the center line and one at each side, the end turrets being placed at different elevations) ; twenty-two 5.6-in. guns, of which 18 are placed in the central cita- del and four aft; eight 1.9-in. guns on the spar deck; and four under-water torpedo tubes. The main armor belt ex- tends all fore and aft, having a thick- ness of 10.8 in. amidships and 7.2 in. at the ends. In addition, there is a central citadel having armored sides and ends 7.2 in. thick, protecting the base of the turrets, the funnels, the conning tower, and 18 of the 5.6-in. guns. There are two protective decks, the upper being 2 in. thick and the lower 234 in. The propelling engines are to be turbines, of 28,000 H. P., driving four screws and capable of giving a speed of 20 knots. The boilers are to be Belleville or Nic- lausse, with three funnels. The normal quantity of coal is to be 900 tons, but the bunkers will have a capacity of 2,700 tons. DOVER-OSTEND STEAMBOAT SERVICE. The Belgian government, in order to maintain the fleet of mail steamers run- ning between Ostend and Dover in. the front rank of high-speed channel mail boats, have recently had two new tur- bine steamers put in hand by the So- ciete John Cockerill, of Antwerp. The first of these two new boats, the Jan Breydel, went through a course of trials on the Clyde on April 12, when she at- tained an average speed of 24.9 knots on the measured mile. This steamer beam The ma- has an over all length of 361 ft., 4) ft., and a depth of 23 ft. WTB omy Pp aR TE 2 Ui Fic. 1--_New Frencu BATTLESHIPS.