PC (Panama Canal) - SC (Suez Canal)
- GH (Cape Good Hope)
- MA (Magellan Strait)
- CH (Cape Horn)
- TO (Torres Strait)
- WP (Wilsons Promontory)
- SS (Singapore Strait)
- SU (Sunda Strait)
- NE (North East Passage)
- NW (North West Passage)
- KC (Kiel Canal)
- TS (Tsugaru Strait)
- OS (Osumi Strait)
- LS (Lombok Strait)
- OR (Oresund)
- GB Great Belt)
- PF (Pentland Firth)
- DS (Dover Strait)
- BR (Bishop Rock)
| - BI (Belle Isle)
- CR (Cape Race)
- WI (Windward Passage)
- MP (Mona Passage)
- AP (Anegada Passage)
- PR (Providence Canal)
- VP (Virgin Passage)
- BL (Balabac Strait)
- BS (Basilan Strait)
- SG (Surigao Strait)
- SB (San Bernardino Strait)
- SJ (Selat Jailolo)
- CC (Corinth Canal)
- JE (Jomard Entrance)
- OM (Selat Ombai)
- JS (Johnstone Strait)
- GV (Grenville Channel)
- NP (Nanuku Passage)
- CO (Cook Strait)
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