Everything Boat Building
Don't tell me that I can't. Tell me how I can.

Disclaimer: I am not a spokesman for the US Coast Guard or ABYC. Contact the US Coast Guard or ABYC for official interpretations. More.....

This page is designed to print on a letter size 8 1/2 by 11 inch or A4 210mm by 297mm.

Title 33 NAVIGATION AND NAVIGABLE WATERS

PART 183 BOATS AND ASSOCIATED EQUIPMENT

Subpart E

§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

Author's note: The chart below may not squeeze down to fit small screens on phones but it will print full size.

The chart below is from ABYC S-30 Outboard Engine and Related Equipment Weights published July 2022, and adopted by the US Coast Guard.


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.