Maritime Geography, Routes and Chokepoints
Geography and routes portal: trade lanes, canals and straits, Arctic routes, named seas and gulfs, seasonal and ice limits, and canal transit rules and tolls.
This portal covers where ships go: trade lanes, canals and straits, Arctic routes, named seas and gulfs, seasonal and ice constraints, and transit rules and tolls set by the canal authorities.
The references are the canal authorities’ published transit rules and tolls, IHO publication S-23 on the limits of oceans and seas, and the national hydrographic offices’ sailing directions.
The security overlay on chokepoints belongs to Maritime Security, Defence and Risk. Distance computation is on ShipCalculators.com and is not duplicated here.
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- Maritime Chokepoints: Canals and Straits
How lock chambers, dredged depth and charted depth at Panama, Suez, Malacca and Hormuz set the Panamax, Neopanamax and Suezmax limits and the cost of a route.
- Suez Canal: convoy transits, SCNT dues and draft limits
A 193.30 km lock-free sea-level waterway across Egypt, operated by the Suez Canal Authority, tolled on Suez Canal Net Tonnage and transited by scheduled convoy.
- Panama Canal: transit rules, tolls and NeoPanamax limits
An 80 km lock canal across the Isthmus of Panama, operated by the Panama Canal Authority, tolled on PC/UMS tonnage and bounded by NeoPanamax lock geometry.
- Strait of Malacca: routeing, STRAITREP and transit rules
The Strait of Malacca is the international strait between Sumatra and the Malay Peninsula, under UNCLOS transit passage, IMO routeing and STRAITREP reporting.
All articles in this portal
5 articles, plus 52 in preparation.