44ft Motor Lifeboats
Please note that these figures may vary from boat to boat.

If anyone can help me with a fuel consumption chart for any of the other engines I would really like to hear from you e-mail.

Caterpillar 3208 (RNLI)

KnotsRPMMiles/GallonGallons/HourEndurance Hours Run
917082.064.3757163.4
1020511.3487.4237337.3
1123381.01710.8228225.6
1225450.87913.6524320.3
12.3626000.85714.4323719.2
1326790.83615.5523117.8
1427770.8241722816.3
14.5128210.81817.7322615.6

Trial Data

Performed on: 44-001

Reduction Gear: 2.96 : 1

Propellers: 30" Dia x 25 1/4" Pitch

Usable Fuel Capacity: 277 Gallons

Radius of Action = Half Total Distance

Mile = Nautical Mile
Total Distance and Hours Run done on Full Tanks

Caterpillar 3208T (RNLI)

KnotsRPMMiles/GallonGallons/HourEnduranceHours Run
9.10117601.56.07429.547.2
1020431.039.69295.729.57
1122990.7814.05224.320.39
1224940.6717.97191.315.94
12.726000.6320.24179.814.16
1326400.6221.09176.613.58
1427540.623.5170.712.19
14.89428390.5925.29168.711.33

Trial Data

Performed on: 44-010

Reduction Gear: 2.5 : 1

Propellers: 28" x 24.125" Pitch 4 Blade

Usable Fuel Capacity: 286.5 Gallons

Radius of Action = Half Total Distance

Mile = Nautical Mile
Total Distance and Hours Run done on Full Tanks

Cummins V6-200 (US Coast Guard)

KnotsRPMGallons/MileEndurance
813900.56537
917880.68435
1021581.08290
1124301.45210
1226321.66180
1327771.76168
1428931.82164
1529931.84163

Trial Data

Performed on: 44304

Draft Fwd: 3' 2 7/8"

Draft Aft: 3' 3"

Displacement: 16.25 Tons

Date of Trial: 12-11-62

Wind and Sea: 5 to 8 Mph. - Calm

Course: Kent Island

Total Fuel: 333 Gals.

Useable Fuel: 301 Gals.

Eng. to Shaft Ratio = 3.02 Avg.

General Motors/Detroit Diesels 6V-53 (US Coast Guard)

KnotsApprox RPMGallons/MileGallons/HourEndurance
3.88000.2651.21565
5.710000.3292.11001
6.812000.413.2782
814000.5454.3550
8.316000.8557.2449
8.918001.0169.1295
9.520001.11810.8268
10.122001.23212.3243
10.824001.81621165
11.326001.82123.1164
14.428001.92226.24163

Trial Data

Performed on: 44376

Date: 18th May 1993

Sea: Calm

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