Measurement of vessels for the Panama canal (1913)
Johnson, Emory R. (Emory Richard), 1864-1950, United States. War Dept · Washington, Govt. Print. Off. · leaf 534
ex-empt by rights (fig. 8). (b) When neither end hasan opening equal at least toone-half its width the entirespace is considered closed forthe Suez. In this case, underthe 1904 arrangement the partof the space under the bridgebelonging to the engine-roomventilators is exempted (fig 9). (c) When… … ab > $ cd | and wjthout means ab > I cd/of being closed; whole spaceccdd considered open and ex-empt except F and F, whichare inclosed constructions ac-cording to the English rule andare measured and taxed. ab < j cd.ab < J cd. A, B, portions considered closed,measured and taxed. M, m,…