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CODE OF FEDERAL REGULATIONS – TITLE
33 – NAVIGATION AND NAVIGABLE WATERS
PART 183—BOATS AND ASSOCIATED EQUIPMENT
Subpart C—Safe Loading
Sec. 183.31—Applicability
This subpart applies to monohull boats less
than 20 feet in length except sailboats, canoes, kayaks, and
inflatable boats.
Sec. 183.33—Maximum weight capacity:
Inboard and inboard-outdrive boats
(a) The maximum weight capacity (W) marked on
a boat that has one or more inboard or inboard-outdrive units
for propulsion must not exceed the greater value of W obtained
from either of the following formulas:
| W = |
(maximum
displacement) |
– |
boat
weight |
– |
4(machinery
weight) |
|
5 |
|
5 |
|
5 |
| W = |
(maximum
displacement – boat weight)
|
|
5 |
(b) For the purposes of paragraph (a) of this
section:
(1) Maximum displacement is the weight of
the volume of water displaced by the boat at its maximum
level immersion in calm water without water coming aboard.
For the purpose of this paragraph, a boat is level when
it is transversely level and when either of the two following
conditions are met:
(i) The forward point where the sheer intersects
the vertical centerline plane and the aft point where
the sheer intersects the upper boundary of the transom
(stern) are equidistant above the water surface or are
equidistant below the water surface.
(ii) The most forward point of the boat
is level with or above the lowest point of water ingress.
(2) Boat weight is the combination of:
(i) Hull weight;
(ii) Deck and superstructure weight;
(iii) Weight of permanent appurtenances;
and
(iv) Weight of full permanent fuel tanks.
(3) Machinery weight is the combined weight
of installed engines or motors, control equipment, drive
units, and batteries.
[CGD 72-61R, 37 FR 15782, Aug. 4, 1972]
Editorial Note: For
Federal Register citations affecting Sec. 183.33, see the
List of CFR Sections Affected, which appears in the Finding
Aids section of the printed volume and on GPO Access.
Sec. 183.35—Maximum weight capacity:
Outboard boats
(a) The maximum weight capacity marked on a
boat that is designed or intended to use one or more outboard
motors for propulsion must be a number that does not exceed
one-fifth of the difference between its maximum displacement
and boat weight.
(b) For the purposes of paragraph (a) of this
section:
(1) Maximum displacement is the weight of
the volume of water displaced by the boat at its maximum
level immersion in calm water without water coming aboard
except for water coming through one opening in the motor
well with its greatest dimension not over 3 inches for outboard
motor controls or fuel lines. For the purpose of this paragraph,
a boat is level when it is transversely level and when either
of the two following conditions are met:
(i) The forward point where the sheer intersects
the vertical centerline plane and the aft point where
the sheer intersects the upper boundary of the transom
(stern) are equidistant above the water surface or are
equidistant below the water surface.
(ii) The most forward point of the boat
is level with or above the lowest point of water ingress.
(2) Boat weight is the combination of:
(i) Hull weight;
(ii) Deck and superstructure weight;
(iii) Weight of permanent appurtenances;
and
(iv) Weight of full permanent fuel tanks.
[CGD 72-61, 37 FR 15782, Aug. 4, 1972,
as amended by CGD 73-250, 40 FR 43857, Sept. 23, 1975; CGD
75-176, 42 FR 2681, Jan. 13, 1977; USCG-1999-5832, 64 FR 34716,
June 29, 1999]
Sec. 183.37—Maximum weight capacity:
Boats rated for manual propulsion and boats rated for outboard
motors of 2 horsepower or less
(a) The maximum weight capacity marked on a
boat that is rated for manual propulsion or for motors of
2 horsepower or less must not exceed 3/10 of the difference
between the boat’s maximum displacement and the boat’s
weight in pounds.
(b) For the purposes of paragraph (a) of this
section:
(1) Maximum displacement is the weight of
the volume of water displaced by the boat at its maximum
level immersion in calm water without water coming aboard.
For the purpose of this paragraph, a boat is level when
it is transversely level and when either of the two following
conditions are met:
(i) The forward point where the sheer intersects
the vertical centerline plane and the aft point where
the sheer intersects the upper boundary of the transom
(stern) are equidistant above the water surface or are
equidistant below the water surface.
(ii) The most forward point of the boat
is level with or above the lowest point of water ingress.
(2) Boat weight is the combination of:
(i) Hull weight;
(ii) Deck and superstructure weight; and
(iii) Weight of permanent appurtenances.
[CGD 72-61R, 37 FR 15782, Aug. 4, 1972]
Editorial Note: For
Federal Register citations affecting Sec. 183.37, see the
List of CFR Sections Affected, which appears in the Finding
Aids section of the printed volume and on GPO Access.
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