Calculating distance

[Guest]

Boatnerd has a table distances.

[BleuH2_O]

I use this tool (which includes a nautical miles selection) to help me better "guesstimate" the distance from place to place. Ships generally average around 12 kph. Doing the math gives you an idea of when they'll arrive at a specific location.
http://www.daftlogic.com/projects-googl ... ulator.htm