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CODE OF FEDERAL REGULATIONS – TITLE
33 – NAVIGATION AND NAVIGABLE WATERS
PART 183—BOATS AND ASSOCIATED EQUIPMENT
Subpart H—Flotation Requirements
for Outboard Boats Rated for Engines of 2 Horsepower or Less
Sec. 183.320—Preconditioning for tests
A boat must meet the following conditions for
at least 18 hours before the tests required by Secs. 183.325,
183.330, and 183.335:
(a) Manufacturer supplied permanent appurtenances
such as windshields, and convertible tops must be installed
on the boat.
(b) The boat must be loaded with a quantity
of weight that, when submerged, is equal to the sum of the
following:
(1) Two-fifteenths of the persons capacity
marked on the boat.
(2) Twenty-five percent of the result of the
following calculation, but not less than zero: the maximum
weight capacity marked on the boat; less the weight shown
in column 6 of Table 4 for the maximum horsepower marked
on the boat; less the persons capacity marked on the boat.
(c) The weights required by paragraph (b) of
this section are placed in the boat so that the center of
gravity of each amount of weight required by paragraphs (b)(1)
and (b)(2) of this section is within the shaded area illustrated
in Figure 11. The location and dimensions of the shaded area
are as follows:
(1) The shaded area is centered at the mid-length
of the passenger carrying area and at the mid-breadth of
the boat;
(2) The length of the shaded area, measured
along the centerline of the boat, is equal to 40 percent
of the length of the passenger carrying area of the boat;
and
(3) The breadth of the shaded area, measured
at the mid-length of the passenger carrying area, is equal
to 40 percent of the breadth of the passenger carrying area
of the boat.
(d) Weight must be placed in the normal operating
position of the motor and controls in lieu of this equipment.
The quantity of weight used for this purpose depends upon
the maximum rated horsepower of the boat being tested and
is specified in Column 2 of Table 4 for the swamped weight
of the motor and controls.
(e) Permanent fuel tanks must be filled with
fuel and each external opening into the fuel tank must be
sealed.
(f) The boat must be keel down in the water.
(g) The boat must be swamped, allowing water
to flow between the inside and the outside of the boat, either
over the sides, through a hull opening, or both. Entrapped
air in the flooded portion of the boat must be eliminated.
Sec. 183.322—Flotation materials
(a) Flotation materials must meet the requirements
in Sec. 183.114 as listed in Table 183.114 when used in the
bilge, unless located in a sealed compartment.
[CGD 77-145, 43 FR 56859, Dec. 4, 1978;
44 FR 47934, Aug. 16, 1979]
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