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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. 183.39—Persons capacity: Inboard
and inboard-outdrive boats
(a) The persons capacity in pounds marked on
a boat that is designed to use one or more inboard engines
or inboard-outdrive units for propulsion must not exceed the
lesser of:
(1) The maximum weight capacity determined
under Sec. 183.33 for the boat; or
(2) For boats with a maximum persons
capacity less than 550 pounds, the maximum persons capacity
determined in the following manner:
(i) Float the boat in calm water with
all its permanent appurtenances including installed engines,
full fuel system and tanks, control equipment, drive units
and batteries.
(ii) Gradually add weights along one
outboard extremity of each passenger carrying area, at
the height of the seat nearest the center of that area,
but no higher than the height of the gunwale and distributed
equally forward and aft of that center in a plane parallel
to the floorboards, until the boat assumes the maximum
list or trim or both, without water coming aboard.
(iii) Compute the persons capacity
in pounds in the following formula: Persons capacity=A/0.6
where A is the total of the weights added in paragraph
(a)(2)(ii) of this section.
(b) The maximum persons capacity in whole numbers
of persons marked on a boat that is designed or intended to
use one or more inboard engines or inboard-outboard units
must not exceed the value obtained by adding 32 pounds to
the value determined in paragraph (a)(2)(iii), dividing the
sum by 141 and rounding off the result to the nearest whole
number. If the fraction is less than one-half, round down
to the next whole integer and if the fraction is equal to
or greater than one-half, round up to the next higher whole
integer.
[CGD 78-034, 45 FR 2030, Jan. 10, 1980,
as amended by CGD 83-012, 49 FR 39328, Oct. 5, 1984; 50 FR
18636, May 2, 1985]
Sec. 183.41—Persons capacity: Outboard
boats
(a) The persons capacity in pounds marked on
a boat that is designed to use one or more outboard motors
for propulsion must not exceed the lesser of:
(1) The maximum weight capacity determined
under Sec. 183.35 for the boat minus the motor and control
weight, battery weight (dry), and full portable fuel tank
weight from Table 4 of Subpart H of this part; or
(2) For boats with a maximum persons
capacity less than 550 pounds, the maximum persons capacity
determined in the following manner:
(i) Float the boat with all its permanent
appurtenances.
(ii) Add, in normal operating positions,
the dry motor and control weight, battery weight, and
full portable fuel tank weight, if any, shown in Table
4 of Subpart H of this part for the maximum horsepower
capacity marked on the boat. Permanently installed fuel
tanks shall be full of fuel.
(iii) Gradually add weights along one outboard
extremity of each passenger carrying area, at the height
of the seat nearest the center of that area, but no higher
than the height of the gunwale, and distributed equally
forward and aft of that center in a plane parallel to
the floorboards until the boat assumes the maximum list
or trim, or both without water coming aboard.
(iv) Compute the persons capacity in pounds
using the following formula: Persons capacity=A/0.6 where
A is the total of the weights added in paragraph (a)(2)(iii)
of this section.
(b) The maximum persons capacity in whole numbers
of persons marked on a boat designed or intended to use one
or more outboard motors for propulsion must not exceed the
value obtained by adding 32 pounds to the lesser of the values
determined in paragraph (a)(1) or (a)(2)(iv), dividing the
sum by 141, and rounding off the result to the nearest whole
number. If the fraction is less than one-half, round down
to the next lower whole integer and if the fraction is equal
to or greater than one-half, round up to the next higher whole
integer.
[CGD 78-034, 45 FR 2030, Jan. 10, 1980,
as amended by CGD 83-012, 49 FR 39328, Oct. 5, 1984; 50 FR
18636, May 2, 1985]
Sec. 183.43—Persons capacity: Boats
rated for manual propulsion and boats rated for outboard motors
of 2 horsepower or less
(a) The persons capacity in pounds marked on
a boat that is rated for manual propulsion or for motors of
2 horsepower or less must not exceed:
(1) For boats rated for manual propulsion,
90 percent of the maximum weight capacity in pounds; and
(2) For boats rated for motors of 2 horsepower
or less, 90 percent of the maximum weight capacity in pounds,
less 25 pounds.
(b) The maximum persons capacity, in whole numbers
of persons marked on a boat that is rated for manual propulsion
must not exceed the value obtained by adding 32 pounds to
the value determined in paragraph (a)(1), dividing the sum
by 141, and rounding off the result to the nearest whole number.
If the fraction is less than one-half, round down to the next
lower integer and if the fraction is equal to or greater than
one-half, round up to the next higher whole integer.
(c) The maximum persons capacity in whole numbers
of persons marked on a boat rated for motors of 2 horsepower
or less must not exceed the value obtained by adding 32 pounds
to the value determined in paragraph (a)(2), dividing the
sum by 141, and rounding off the result to the nearest whole
number. If the fraction is less than one-half, round down
to the next lower whole integer and if the fraction is equal
to or greater than one-half, round up to the next higher whole
integer.
[CGD 78-034, 45 FR 2031, Jan. 10, 1980]
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