Safe
Loading — Subpart C
Category Three: Boats Rated for Manual
Propulsion and Boats Rated for Outboard Motors of 2 Horsepower
or Less
Example of Calculations for Maximum Weight
Capacity and Persones Capacity: Boats Rated for Manual Propulsion
and Boats for 2 Horsepower or Less (Category Three)
Step 1: Compute maximum displacement
D = cubic capacity X 62.4 lb.
D = 45 X 62.4 = 2808 lb.
Step 2: Compute maximum weight capacity (W).
W = (maximum displacement (lb.) – boat
weight) X 3/10
W = (2808 lb. – 600 lb.) 3/10
W = 662.4 rounded down to 662 lb.
This figure of 662 pounds is the maximum weight
capacity that must be displayed in the capacity label. It
can be less, but it cannot be any more.
Step 3: Compute the persons capacity in pounds
(P lb.).
The boat may be used for rowing but it has a
transom capable of carrying an outboard motor and the manufacturer
has decided to rate the boat for 2 HP on the certification
capacity label. Therefore the persons capacity numbers must
be calculated following option 2 of the regulation 183.43
(a) (2) above.T
| P(lb.) |
= 90% W –
25 lb. |
| |
= (.90 X 662)
– 25 |
| |
= 595.8 –
25 = 570.8 rounded up to 571 lb |
|
|
Step 4: Compute
the persons capacity in whole numbers (P no.).
| = |
32 + P(lb.) |
= 32 + 571 = 4.27 rounded down to 4 persons |
| |
141 |
|
The capacity label of the boat in this example
may display a label such as:
U. S. COAST GUARD
MAXIMUM CAPACITIES
4 PERSONS OR 571 LB
662 LB PERSONS, MOTOR AND GEAR
2 HORSEPOWER, MOTOR
NOTE:
See 33 CFR 183.25.
Previous |
Next
|
