Page:United States Statutes at Large Volume 47 Part 2.djvu/716

2320 8bMr. General menta. INTERNATIONAL LOAD LINE CONVENTION. JULY IS, 1930. ShMr. Rule LIV.- Gentral. measure- The sheer is measured from the deck at side to a line ot reference drawn pa.raJlel to the keel through the sheer line at amidships. In ships designed to trim by the stern in service, the sheer may be measured in relation to the load line, provided an additional mark is placed at .25 L forward of amidships, to indicate the assigned load line. This mark is to be similar to the load line disc amidships. In flush deck ships and in ships with detached superstructures the sheer is measured at the freeboard deck. AtII" p. 221M. In ships with topsides of unusual form in which there is a step or break in the topsides, the sheer is considered in relation to the equivalent depth amidships (8U Rule XXXV). In ships with a superstructure of standard height which extends over the whole length of the freeboard deck, the sheer is measured at the superstructure deck; where the height exceeds the standard, the sheer may be considered in relation to the standard height. Where a superstructure is intact or access openings in its enclosing bulkheads are fitted with Class 1 closing appliances, and the super- structure deck has at least the same sheer as the exposed freeboard deck, the sheer of the enclosed portion of the freeboard deck is not taken into account. Rule LV. -Standard Shur Pro.fi,k. 8taDdlld sheer pro- The ordinates (in inches) of the standard sheer profile are given me. in the following Table, where L is the number of feet in the length of the ship:- Station. A.P ______________________________________ _ 1/6 L from A.P ___________ _____________ ____ _ 1/3 L from A.P _____________ - ________ -- ____ _ JUxUdsbipa ________________________________ _ 1/3 L from F.P ______ _______ ______ _______ __ _ 1/6 Lfrom F.P ________ _________ ________ ___ _ r.p ______________________________________ _ Ordinate. .1L+10 .0445 L + 4.45 .011L+1.1 o .022L+2.2 .089L+8.9 .2 L+20 Factor. 1 4 2 4 2 4 1 A.P .=After end of Summer load water-line. F .P. -Fore end of Summer load water-line.