CFR > Title 33 - Navigation and Navigable Waters > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER S—BOATING SAFETY (parts 173 to 188) > PART 183—BOATS AND ASSOCIATED EQUIPMENT > SUBPART H—Flotation Requirements for Outboard Boats Rated for Engines of 2 Horsepower or Less (§183.301 to §183.335) > 183.310—Reference areas.

183.310—Reference areas.

(a) The forward reference area of a boat is the forwardmost 2 feet of the top surface of the hull or deck as illustrated in Figure 9.
(b) The aft reference area of a boat is the aftmost two feet of the top surface of the hull or deck, as illustrated in Figure 9.