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Adventures in Boating - Washington Handbook Washington State Parks & Recreation

Boating Basics: Before Going Out

Before going out on the water, take steps to make the outing safe and enjoyable.

Vessel Length Classes

  • A vessel’s length class determines the equipment necessary to comply with federal and state laws.
  • Vessels are categorized in these length classes:
    • Less than 16 feet (Class A)
    • 16 feet to less than 26 feet (Class 1)
    • 26 feet to less than 40 feet (Class 2)
    • 40 feet to less than 65 feet (Class 3)
  • Length is measured from the tip of the bow in a straight line to the stern. This does not include outboard motors, brackets, rudders, bow attachments, or swim platforms and ladders that are not a molded part of the hull.
Measuring vessel length of inboards and outboards

Vessel Capacity

Capacity plate

Always check the capacity plate to make sure you don’t swamp or capsize your vessel by overloading it. This plate is usually found near the operator’s position or on the vessel’s transom. It indicates the maximum weight capacity, maximum number of people the vessel can carry safely, and maximum horsepower. You should not exceed either the stated maximum weight capacity or the maximum number of people.

Personal watercraft (PWCs) and some other vessels are not required to have a capacity plate. Always follow the recommended capacity in the owner’s manual and on the manufacturer’s warning decal.

On vessels with no capacity plate, you can use the following rule of thumb to calculate the number of persons (weighing 150 lbs. each, on average) that the vessel can carry safely in good weather conditions.

Number of people = vessel length (ft.) x vessel width (ft.) ÷ 15

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Online boating safety handbook last modified: September 2, 2009
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