Page:EB1911 - Volume 24.djvu/918

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882
[MERCHANT VESSELS
SHIP


fitted with Diesel motors of 360 H P. More recently the “ Emanuel I combined, and is fitted with one deck, but has twc tiers of beams-Nobel ” and “ Karl Hagelin ” have been built for the same firm; B (fig. 14, Plate II.) is a vessel with a top-gallant forecastle, bridge they are fitted with Diesel motors of 1200 H.P., are 380 ft. long, | house and poop, and a single deck. C is an awning-decked vessel,


FIG. 12.-General Arrangement of a Modern Oil-Tank Steamer. 1, (ériw space. 5, (lghain locker. 9, gcqffer dam. 13, lgogkey boiler. 16, girgodhatch. h h 2, a ins. 6, ump-room. 10, i-tank. 14, a ey. 17, i an cargo atc 3, Engineers' cabins. 7, /Vater-ballast tank. II, B0iler-r00m. 15, Steering engine house. 18, Coal shoot. 4, Store. 8, Fore-hold. 12, Engine-room. 46 ft. beam, 16% ft. draught and carry 4600 tons of kerosene oil. The large motor-driven vessels are arranged somewhat similarly to the steam-driven oil-tank vessels, but with the machinery fitted in a comparatively shorter space, no boiler room being then required. Table X. gives the dimensions, carrying capacity and other leading particulars of four cargo steamers of different types, with two decks, but three tiers of beams. D is a shelter-decked vessel of the highest class htted with three decks and four tiers of beams and having machinery of high power. E is an American lake steamer in which the draught was limited to 20 ft., similar in man respects to the smaller vessels shown in rig. 15 (Plate Il.) and in 16 below Besides the principal dimensions and light and load displacements TABLE X.-Types of Cargo Carrying-Steamers. when b .lt A. B. C. D. E.

ul ' ' Builtin 1881. Built in 1894. Built in 1897. Built in 1909. Built in 1909 7 /Vith Top-gallant

Type of Vessel dléiigi Blgiglgg 65123; e Awning-decked. Shelter-decked. Am;;1;;§ n § ?k° and Poop.

Length 263' 6" 00' 0” 0' 0” ' 0" 580' 0” 35/ 811 340/ 0/1 4501 Or/ 0/1 58/ On Depth (moulded) 20' 6" 23' 6" 34' IO” 38' 0” 32' 0” Draught (without keel) 19' 3” 19' 2” 27' 5" 28' 0” 19' 0” Weight of steel or iron in hull 820 tons . 3676 tons 6 t 4145 tons wood, outfit, &c. 166, , 509, , 7 50 Ons 300, , propelling machinery 184, , 615 H 2200 tons ' 350, , Total light displacement 1170, , 1620 tons 4800, , 9850, , 4795, , Load diS01000m00f — . 3740 .. 5530, 16,710, , 131350 ., 15,795 . block coefficient -72 -80 -81 -68 ~886 Ratio of light to load displacement -313 -293 ~287 '537 -304 Dead-weight carried .... . 2570 tons 3910 tons 11,910 tons 8500 tons 1 1,000 tons Ratio of dead-weight carried to load displacement -687 -707 -713 - -463 -696 Cargo capacity in cubic feet ..... 1 15,000 170,000 680,000 650,000 Tonnage under deck . .. . 1436 2150 7038 8480 7100 gross 1816 2385 7296 12,100 7268

net 1167 1500 4770 6780 5484

Water-ballast capacity . . 357 tons 500 tons 3346 tons 9464 tons and one steamer carrying mails and passengers as well as a large the block coefficients ” corresponding to the load conditions are cargo. A is a well-decked vessel (fig. 13, Plate II), having a top gallant forecastle with a long raised quarter-deck and bridge-house given in Table IV., in order to show the fullness of form commonly

adopted in these vessels. The block coejicient is the ratio of the