The SOLVE TVMDC calculator will correct magnetic compass error and make magnetic compass correction thus correcting variation and deviation of the magnetic compass. The calculator ...

A navigational aid (also known as aid to navigation, ATON, or navaid) is any sort of marker which aids the traveler in navigation; the term is most commonly used to refer to ...

Watermark Navigation offers a complete line of marine navigation aid from bouys, marine lanterns and day markers to floating barriers and mooring systems.

When a vessel is within radar range of land or special radar aids to navigation, the navigator can take distances and angular bearings to charted objects and use these to establish ...

Each program and site under The Commons is being built up and extended in iterative stages in an attempt to create an efficient, cooperative, 21st Century "knowledge building ...