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suezmax
Suezmax is a naval architecture term for the largest ship measurements capable of transiting the Suez Canal in a laden condition, and is almost exclusively used in reference to tankers. Since the canal has no locks, the only serious limiting factors are draft (maximum depth below waterline), and height because of the Suez Canal Bridge. The current channel depth of the canal allows for a maximum of of draft, meaning that a few fully laden supertankers are too deep to fit through, and either have to unload part of their cargo to other ships ("transhipment") or to a pipeline terminal before passing through, or alternatively avoid the Suez Canal and travel around Cape Agulhas instead. The canal was deepened in 2009 from .
The typical deadweight of a Suezmax ship is about 160,000 tons and typically has a beam (width) of . Also of note is the maximum head room—"air draft"—limitation of , resulting from the height above water of the Suez Canal Bridge. Suez Canal Authority produces tables of width and acceptable draft, which are subject to change.〔(Suez Canal Authority - Rules of Navigation )〕 From 2010, the wetted surface cross sectional area of the ship is limited by , which means of draught for ships with the beam no wider than or of draught for ships with maximum allowed beam of .〔(Suez Canal Authority - Beam and Draught Table )〕
Similar terms of Panamax, Malaccamax, and Seawaymax are used for the largest ships capable of fitting through the Panama Canal, the Strait of Malacca and Saint Lawrence Seaway, respectively. Aframax tankers are those with a capacity of to . The term "Chinamax" refers to vessels able to use a number of harbours while fully laden. "Capesize" refers to bulk carriers too big to pass through the Suez Canal—and needing to go around the Cape of Good Hope—but recent dredging means many Capesize vessels can use the canal. Plans to deepen the draft to could lead to a redefinition of the Suezmax specification, as happened to the Panamax specification after deepening and widening of the Panama Canal.
== See also ==
* List of Panamax ports
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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