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Official Massachusetts Boating Handbook

Boating Basics: Before Going Out on Your Vessel

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.

Picture of Length Measurement of Inboard Motor Boat:

Measuring length of inboard motor boat

Picture of Length Measurement of Outboard Motor Boat:

Measuring length of outboard motor boat

Vessel Capacity

Vessel maximum capacity plateAlways check the capacity plate to make sure you don't swamp or capsize your vessel. This plate is usually found near the operator's position or on the vessel's transom. It indicates the maximum weight capacity and maximum number of people the vessel can safely carry, and maximum horsepower.

Capacity plates are required on single-hull vessels that are less than 20 feet in length.

Personal watercraft (PWCs) and sailboats do not have a capacity plate. Always follow the recommended capacity in the owner's manual and on the manufacturer 's warning decal.

Verbatim Statute: Vessel capacity is regulated as per 323 CMR2.07(7).

Overloading: No vessel may be operated in an overloaded condition. Overloaded condition means that the number of persons on board and/or the cargo being carried exceeds the manufacturer's recommended limit for such vessel or is excessive given windy water and weather conditions.

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Get Started!
Boating Basics
It's the Law!
State Information

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Online boating safety handbook last modified: April 22, 2008
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