This is a new international knowledge base. You can learn this on this website. For safe boating it is essential to know the positioning methods. Where you are is vital. Famous yachtsmen used these techniques before you.
Health is everything and paramount when enjoying the great blue.
The art and science of navigating by yourself is free. Old seafarers used the seem techniques as explained in these materials. Famous yachtsmen used these techniques before you. Where you are is vital. Where you are is vital.