Routing
Routes, canals and the distance library.
Distances printed in NGA Pub. 151 for thousands of ports, each labelled with its source. A modelled 111-port network adds the Suez and Panama alternatives. Every figure states its method and its limits.
Pairs not printed directly are reported as unavailable. We do not combine junction legs or estimate a figure the source does not give. The 5,410-record port directory is reference data and adds no routing.
Distance library
NGA Pub. 151: printed distances, with source.
Choose any two of the 5,966 searchable ports. The library returns a direct port-to-port figure printed by NGA where the source lists the pair, otherwise a labelled straight-line estimate from positions; it never combines junction legs or invents missing pairs. Printed coverage: 2,957 records, 18,247 directional entries across 13,865 unique port pairs; 13,430 entries are checked against port coordinates.
The full port index loads as you reach this section.
Modelled network
111 ports, with the canal choice explicit.
Our own sea-network model covering 111 ports. It offers Suez, Panama and no-canal routing, which the printed library does not — and it is not a substitute for the printed figures.
The full port index loads as you reach this section.
Network
The longest curated lanes.
A projection of modelled lanes, drawn from our route data. Illustrative only: not live tracking and not a navigational chart.
- Laem Chabang to Houston: 12,284 nm
- Singapore to Houston: 11,765 nm
- Ho Chi Minh City (Cat Lai) to Houston: 11,745 nm
- Tokyo to Santos: 11,607 nm
- Port Klang to Houston: 11,581 nm
- Tokyo to Hamburg: 11,580 nm
- Manila to New York / New Jersey: 11,512 nm
- Durban to Vancouver: 11,507 nm
- Busan to Santos: 11,423 nm
- Qingdao to Santos: 11,364 nm
- Shenzhen (Yantian) to New York / New Jersey: 11,351 nm
- Hong Kong to New York / New Jersey: 11,351 nm
- Tokyo to Rotterdam: 11,314 nm
- Tokyo to Antwerp: 11,308 nm
- Jebel Ali (Dubai) to Los Angeles: 11,287 nm
- Busan to Hamburg: 11,165 nm
- Qingdao to Hamburg: 11,106 nm
- Manila to Houston: 11,045 nm
- Shanghai (Yangshan) to Santos: 11,041 nm
- Ningbo–Zhoushan to Santos: 10,986 nm
- Laem Chabang to New York / New Jersey: 10,976 nm
- Port Klang to Colón: 10,974 nm
- Port Klang to Balboa: 10,949 nm
- Busan to Rotterdam: 10,899 nm
- Busan to Antwerp: 10,893 nm
- Shenzhen (Yantian) to Houston: 10,884 nm
- Hong Kong to Houston: 10,884 nm
- Qingdao to Rotterdam: 10,840 nm
- Qingdao to Antwerp: 10,834 nm
- Ho Chi Minh City (Cat Lai) to New York / New Jersey: 10,808 nm
Chokepoints
What Suez and Panama avoidance adds to common lanes, from the modelled network.
Open the chokepoint board →Port directory
NGA World Port Index-derived records (position, country and size class), for reference.
Search the directory →Get in touch
Need a route the library does not print?
Tell us the lane and the decision it supports. We will say honestly whether we can supply a figure from a licensed source.