Measurement of vessels for the Panama canal (1913)
Johnson, Emory R. (Emory Richard), 1864-1950, United States. War Dept · Washington, Govt. Print. Off. · leaf 276
-structure, or erection is to be included hi the gross tonnage. When two erections extending from side to side of the ship are separatedby an interval the fore-and-aft length of which is less than the least half breadthof the deck in way of such interval, then whatever be the breadth of the… … Fig. 3.—Forecastle.
