Interactive learning tool for seaman, sailing and motor boat captains. It's usefull for test preperation or to refresh your knowledge before heading out to sea. Sailing schools, with this test's help, can test their students. The test has questions, pictures, animation, learing, and a help section.
The test is frequently updated with new questions. Currently the following themes are available:

Safety
International Code of Signals (Signal flags)
Anatomy of a yacht
Terminology
Sailing theory
Points of Sail
Seamanship
Knots
Pilotage
Buoyage
Buoyage at night
Light characteristic
Navigation
Route planning
Meteorology
Cyclones and anticyclones
Maritime Laws
Ship's Lights & Shapes