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Outboard Weights

Title 33 NAVIGATION AND NAVIGABLE WATERS
PART 183 BOATS AND ASSOCIATED EQUIPMENT

183.75   Applicability.

Manufacturers of vessels to which this subpart applies must use test weights that are not less than the recommended weights set forth in Table 183.75. Table 183.75 details the weight (in pounds) of gasoline outboard engines and related equipment for various rated power (horsepower) ranges.

Table 183.75—Weights (In Pounds) of Gasoline Outboard Engines and Related Equipment for Various Rated Power (Horsepower) Ranges

 
Various Rated Power (Horsepower) Ranges
1 2 3 4 5 6 7 8 9
Engine Power  Dry Running Swamped Controls Battery Weight Full Total WT
Range (HP) Weight Weight Weight & Rigging Dry Submerged Portable Sum of 
Fuel WT Cols. 3,5,6,8
      Single Engine Installations      
0.1 -2.0 30 32 27 0 0 0 0 32
2.1 - 3.9 42 44 37 0 0 0 0 44
4.0 - 6.9 66 69 59 0 0 0 25 94
7.0 - 10.9 105 110 94 5 20 11 50 185
11.0- 22,9 127 133 113 6 45 25 50 234
23.0 - 34.9 187 196 167 9 45 25 100 350
35.0 - 64.9 286 300 255 14 45 25 100 459
65.0 - 94.9 439 461 392 22 45 25 100 628
95.0 - 104.9 458 481 409 23 45 25 100 649
105.0 - 144.9 526 552 469 26 45 25 100 723
145.0 - 194.9 561 589 501 28 45 25 100 762
195.0 - 209.9 652 685 582 33 45 25 100 863
210.0 - 300.0 699 734 624 35 45 25 100 914
300.1 - 350.0 884 928 789 44 45 25 100 1117
             

Notes:

1. Dry weights is the manufacturer's published weight for the shortest midsection increased by 10% to account for longer midsections and additionla required hardware usually not included in published weights. This weight is intended to represent the heaviest model in each power category. For boats designed with a transom height of 20 inches or less, the weight in column 2 may be reduced by 10%.  Recalcute columns 3, 4, and 9 as appropriate.

2. For diesel outboards, replace the value in Column 2 with the manufacturer's published dry weight + 10 percent.

3.  Running weight is the dry weight plus fluids (including 2-stroke oil) and the heaviest recommended propeller. Calculated as 5 percent of dry weight.

4.  Swamped weight is 85 percent of running weight.

5.  Rigging and controls include engine related hardware required to complete the installation (e.g., controls, cables, hydraulic hoses, steering pumps and cylinders). Calculated as 5 percent of dry weight.

6.  If the boat is equipped with a permanent fuel system and is not intended to use a portable tank, the portable fuel tank weight may be omitted.