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a/e 'Lighthouse Tender Laurel Bids were opened by the Lighthouse Department, Washington, on Sept. 2 for the construction of the wooden light house tender, Laurel, the dimensions of which are as follows: Length over all, 104 ft,.6 in: Length on load water line, 95 ft. no molded outside of planking at deck, f, . Depth of hold from main deck, 8 ft. 10 in. Displacement at normal load, 5 ft. 6 in., 190 tons. ' The hull is to be subdivided by a watertight bulkhead at the forward end of the engine room and at the after end of boiler room with a_ non-watertight bulkhead between the two compartments. The keel, floors and frames are to be of white oak and the keelson and deck beams of yellow pine. The tender's machinery will consist of a triple-ex- pansion engine with cylinders 8 in, 13 and 21 in. in diameter, having a com- Pe 2 | INSPEC 1 STATE ROOM 1g CARGO BOAT Pita Pro 20' : oO LAUNCH - ! ' 1 1 | 4 OUTBOARD PROFILE AND GENERAL ARRANGEMENT OF LIGHTHOUSE TENDER LAUREI THE MARINE REVIEW mon stroke of 16 in. supplied with steam from one Almy water tube boiler having 30 sq. ft. of grate surface and 950 sq. ft. of heating surface, construct- ed for a working pressure of 200 Ibs. per sq. in. One _ independent surface condenser will be installed with approx- imately 350 sq. ft. coaling surface con- tained in a steel shell, 2 ft. 11 in. in diameter and 4 ft. in length. One Blake air pump and one Blake feed pump will be installed. The circulating pump will be of Waters-Colver Co. make. The sanitary pump will also be of the Blake type. The bids received for constructing the tender were as follows: Spedden Ship Building Co., -Baltimore, Md., $41,000; Welin Marine Equipment Co., Long Tstand City. N.. Y., $38,700" for: ial only; the Greenport Basin & Construc- tion Co., Greenport, N. Y., $58,400. -The contract was awarded to the Spedden Ship Building Co. © ENGINE. \ i = DESK: a CHIEF ENGINEER \ \N: / ' RTH - sy a [Nex | prot ® | BERTH -- >] | House poe { a LAI S. Ww. R | MASTER October, 1913 The Arch Principle of Ship Construction Paruess, Witoy &. Co, Ltd. of West Hartlepool, have just placed orders for two cargo ships, to be built on the Arch principle of construction under the Ayre-Ballard patent, and each of a deadweight carrying capac- ity of about 3,400 tons. One of them will be built by the North of Ireland Shipbuilding Co. Ltd, at London- derry, and the other by Osbourne, Graham & Co., at Hylton, near Sun- derland. The builders take a license from Messrs. Swan, Hunter & Wig- ham Richardson, Ltd, and Maxwell Ballard, of Wallsend, who are the joint proprietors of the patent and Mr. Ballard is supplying the designs. It is a matter of considerable interest to ship owners to know that, although the Arch principle of ship construc- tion is of comparatively recent date, yet during this year alone three ves-