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BOATS

BOAT TESTS

Defiance 46

CONDITIONS DURING BOAT TEST

Light chop;

LOAD DURING BOAT TEST

full fuel and water, owner’s gear and tender.

TEST BOAT SPECIFICATIONS

Test Engine: 1/600-hp Cummins QSC 8.3L diesel, 1/220-hp Cummins 6BT 5.9 diesel

Props: Michigan Prop 26 x 22 4 blade RH (600 hp); 2/Flexofold, 3-blade folding, 18 x 15 (220 hp)

The Numbers

Test Option 1: Primary 1/600-horsepower Cummins QSC8.3 diesel
RPM KNOTS GPH NM/G RANGE
800 8.3 1.2 6.9 3,209
1200 12.2 2.8 4.3 2,000
1600 15.9 5.7 2.8 1,302
2000 17.1 11.1 1.5 698
2400 20.7 16.4 1.3 605
2800 22.3 20.3 1.1 512
Test Option 2: Auxiliary 1/220-horsepower Cummins hydraulically powering twin ZF SD12 sail drives with Flexofold 18 x 15 folding props.
RPM KNOTS GPH NM/G RANGE
1200 5.9 0.6 9.8 4,557
1800 6.6 1.7 3.9 1,814
2200 7.2 2.8 2.6 1,209
2600 8.9 4.3 2.1 977
3000 9.8 6.4 1.5 698
Speeds are two-way averages measured w/ GPS. GPH taken via Cummins display. Range based on 93% of advertised fuel capacity.

This article originally appeared in the May 2014 issue of Power & Motoryacht magazine.

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