Marine Waypoints Use Marine Waypoints' Great Distance Calculator to determine journey distance between destinations in
Nautical Miles, Statute Miles and Kilometers.
Maritime Global Net MGN is the maritime industry's longest running portal site and provides users with easy, unrestricted access to maritime information, products, and services.
Quest Offshore Resources Quest has created the world’s largest repository of data detailing forecast and active Deepwater Projects worldwide focused on Subsea, Floating Production, Deepwater Pipelines, Umbilicals...
they've got a sweet Conversion Calculator as well!
World Shipping Register WSR offers a great Sea Distances and Voyage Calculator, and a comprehensive database of Ships
Documents (ship common forms) as well as information about World Sea Ports, Shipping Companies and