4 links
International Sail and Power Association
ispa.com
ISPA is an international certification programme with an emphasis on excellence in safe handling and skillful use of pleasure craft.
Sailing Issues Navigation Course
sailingissues.com
A free advanced online course on marine navigation. The course is split into Positions, Nautical Chart, Compass, Plotting, Piloting, Tides, Tide Prediction, Currents, and Navigatio…
Sailing Worldwide
american-sailing.com
Sailing association for sailing schools, instructors and sailors worldwide.