Motor Vessel Law and Legal Definition
According to 36 CFR 13.1102 [Title 36-Parks, Forests, and Public Property -Chapter 1-National Park Service, Department of the Interior-Part 13-National Park System Units in Alaska Subpart N-Special Regulations-Glacier Bay National Park and Preserve Administrative Provisions] motor vessel means “any vessel, other than a seaplane, propelled or capable of being propelled by machinery (including steam), whether or not such machinery is the principal source of power, except a skiff or tender under tow or carried on board another vessel.”