OpenCPN

1. Overview

a. Opencpn was built with the following objectives in mind.

i.   Intended use as primary navigation interface for vessels
     with full-time helm-visible navigational suites.
     Other tools may be better for offline route planning, tide
     and current prediction, online logging, etc.
ii.  Quick startup and shutdown.
iii. Those and only those toolbar buttons really needed for
     daily operation.
iv.  Portability, thus wxWidgets core components.  Currently
     tested and in production use on W98, XP, OS X, and Linux.
v.   Conventional ( i.e. popular and modern ) chart format
     support.  In the real world, this means BSB format raster
     charts, and S57ENC format vector charts.



    And, of course, opencpn is all GPL'ed (or equivalent)
                    Open Source code.


Personal Note:
Opencpn is in primary daily use as the navigation package aboard
M/V Dyad, a 48 ft trawler yacht cruising from Newfoundland to the
Bahamas yearly.