Old seafarers used the seem techniques as explained in these materials. These techniques are proven and time-honored. Yet, you don't have to pay any money. The art and science of navigating by yourself is free. For safe boating it is essential to know the positioning methods.
Health is everything and paramount when enjoying the great blue.
You will have results fast and love the idea of finding your way by yourself. Yet, you don't have to pay any money. Famous yachtsmen used these techniques before you. Symbols are dealt with and plotting and magnetic etc. All the buoyage.