I am the author of Sarp Distance Calculater.
is fully free, unlimited with port distance calculation and not using internet
access for calculations. With this software
you can calculate Port to Port distances easily.
Note that, the downloadable version is the beta test version and first stable version will be released within two months. Stable version will have much more features and clean of bugs. It will also be free.
You can visit our website SARPMARINE.COM - Distance Calculator
, register yourself and download our software and enjoy our unlimited distance calculator.
We want to make a perfect calculator therefore we put bugreport ability on the beta test. Pls just use the bug report button when you think the calculation is wrong. With this way we will make the it much more better. Thank you all in advance.