Suezmax

Description

The current channel depth of the canal allows for a maximum of 20.1 m 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, increasing the draft from 18 to.

The typical deadweight of a Suezmax ship is about 160,000 tons; the typical beam (width) is about 48 m. Also of note is the maximum head room—"air draft"—limitation of 68 m, resulting from the 70 m height above water of the Suez Canal Bridge. Suez Canal Authority produces tables of width and acceptable draft, which are subject to change. From 2010, the wetted surface cross sectional area of the ship is limited by 1006 m2, which means 20.1 m of draft for ships with the beam no wider than 50.0 m or 12.2 m of draft for ships with maximum allowed beam of 77.5 m.

The similar terms 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. 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 travel the Cape route around the Cape of Good Hope and Cape Agulhas—but recent dredging means many Capesize vessels can use the canal. Plans to deepen the draft to 70 ft could lead to a redefinition of the Suezmax specification, as happened to the Panamax specification after deepening and widening of the Panama Canal.

Aframax is a freight rating, not a geographic routing limiter, for tankers are those with a capacity of to .

Container ships

Vessels longer than 400 m need permission from the Suez Canal Authority to transit the canal. As of 2020, the largest container ships in service all have a length of (close to) 400 metres, and a beam and draft that fit just within the limits of the canal. The ship Ever Given, which ran aground in the Canal in 2021, has Suezmax size being 399.9 metres long and with a 58.8 m beam.

References

References

1. "SCA – Rules of Navigation".
2. (26 July 2010). "Egypt's Suez canal H1 revenue, traffic up; upgrade helps". Thomson Reuters (af.reuters.com).
3. [http://www.suezcanal.gov.eg/Files/2-2010.pdf Suez Canal Authority – Beam and Draught Table] {{webarchive. link. (2013-06-04)
4. "Rules of Navigation2020 pdf page 75".
5. (2019-05-06). "Tendency toward Mega Containerships and the Constraints of Container Terminals". Journal of Marine Science and Engineering.
6. {{csr