Engine Characteristics
Engine Application Ratings
The engines covered by this manual are used chiefly
in two different operating conditions: Rating 4 and Rat-
ing 5, as described below.
Rating 4
Special light commercial traffic
For light, planing boats in commercial traffic. Operated
for fewer than 800 hours per year.
Typical boats: High-speed patrol boats for search and
rescue and the armed forces, and special high-speed
fishing boats. Recommended cruising speed: 25
knots.
Full power may be utilized for max 1 hour per 12 hour
period. Between full-throttle periods, engine revolu-
tions must be reduced by at least 10% from full rpm.
Rating 5
Recreational use
Only for pleasure boats operated by owners for their
recreation. Operated for fewer than 300 hours per
year.
Full power may be utilized for max 1 hour per 12 hour
period.
Between full-throttle periods, engine revolutions must
be reduced by at least 10% from full rpm.
Engine Characteristics, Engine Application Ratings
14
47704162 10-2014 © AB VOLVO PENTA
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