Hydraulic Pump.
Emergency engine shutoff.
4J4: Engine Emergency Shutdown
There are little red emergency shutdown buttons on the
aft end of each injector pump assembly on the port side of each
engine. In the event the “Stop” control doesn’t work, you can
press this button on each engine. See illustration.
4J5: Engine Hydraulic System
The starboard engine has a gear-driven hydraulic pump
bolted onto the aft end of its transmission. The
hydraulic pressure is used to operate the stabilizer’s
fins.
4J6: Engine Operating Parameters
These Caterpillar engines are red-lined at 2600 RPM.
Maximum cruise is 2400 RPM
. However, the realities of
vessel hull design and powerplant engineering dictate that higher RPM operation is very inefficient on
semi-displacement vessels like this one, so you will find these parameters to be true (all figures are
estimates)
RPM
Gallons/Hour
Knots
Nautical Miles/Gallon
1000
5.0
7.1
1.42
1200
7.0
8.0
1.19
1400
10.0
9.0
.90
1600
12.8
9.7
.76
1800
16.3
10.4
.69
2000
21.3
11.0
.52
2200
26.8
11.8
.44
2400
32.0
12.8
.40
Maximum Cruise RPM is 2400 RPM!
As you can see, each extra knot is very expensive once you have passed “displacement speed” on the
vessel hull; this is not a “planing” boat! It is sensible to operate the boat in the 1400-2000 RPM range,
and you’ll enjoy quieter, more pleasant cruising and economy, too!
Section 4J: Engines & Transmissions 4.27
