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Boats are categorized by how they are powered to move on water. Traditional boats are human-powered and naturally, are slower than motor-assisted boats. The velocity of traditional boats depends on two inversely-related factors: manpower and load. With a similar number of boatmen, larger boats will run slower than smaller ones; for boats of similar size with the same amount of manpower, the one with a heavier load will also be bound to run slower. With the advancement of technology, many different types of boats to suit every boats have also developed into different types, although classed into only three categories. Non-powered or human powered, as have been said, pertains to all types of water transport that do not depend on machines or are not fueled to sail. Best examples of boats in this category are rafts and floats. These boats are designed for one-way downstream travel. Human-powered boats belong to the same category but are sometimes confused with non-powered boats. Their inclusion is based on the fact that they are not run by machines or by fueled engines. Some examples are kayaks, gondolas, and canoes. A canoe is a traditional boat designed with a pointed bow and stern, and is paddled across rivers and seas. Modern canoes are equipped with electronic or gas motor. A kayak is driven similarly with a canoe, except that it is smaller and usually covered. This is used today for sport and recreation. A kayak should pass CE proofing before being used for sports. Low-standard kayaks are dangerous to use in rapid currents as they may rip off easily. With CE tag or marking, users can be assured of the strength and endurance of the kayak in providing extreme sport. Another category of boat is sailing. Boats under this category use sail and wind to travel across bodies of water. With enough mast, even large boats can propel to far places. In fact, ancient voyagers and those who first discovered the islands of the world used sailing boats as means of transportation. Today, many use sailing boats for water skiing. Like any other boats used for sports, sailing boats should pass CE proofing. Most of the boats that propel in seas and lakes are motor-powered. This category consists of boats that no longer require manpower to move. CE proofing helps in assuring the quality of engines of motor-powered boats for safety and security. Those marked with CE stickers passed the standards set by reputable organizations. From small runabouts to large cruise ships, CE marking is an important symbol of quality.
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