How do you check year on Yamaha 8A outboard engine?

What is the system of navigation in which a navigator finds a position by measuring the distance of a course sailed from some other known point to that position? When is it a sailboat the stand on vessel in relations to a recreational powerboat? What is the difference between a wave runner and a jet ski? Is masonite waterproof? What would be the oil to gas ratio for a 2005 mercury 25 HP outboard? How many deaths per year from high speed boat races? Why did Olympia De gouges write a declaration of the rights of woman and the female citizen? Red on starboard? What do 2 short blasts mean on a boat? In the State of Florida if not directly involved in diving activity when operating on rivers inlets or navigation channels vessels must travel at no wake speed when within how many feet of diver down? How many fleet ballistic submarines were operating in the 1970's? How many registered boats are there in Canada? How many life boats where on the Titanic? Does a trailer for a 20 ft Pontoon Boat have to be exactly 20ft how much longer or shorter could it be? Who was the first man to cross the Atlantic alone in an airplane? How does a boat move through the water? When is the peak season for cruise lines? What is the gas to oil ratio for a 1971 mercury 200 20 hp outboard? Why is a fiberglass hull better than one made up of metal? Where can i find the best price for a set of boat trailer tires?