NW Explorations
AQUILA OPERATING MANUAL
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4L5: Fuel Management
In the port aft side of the engine room there is a fuel manifold consisting of a set
of valves for the fuel supply to the main engine and generator, and another set for
the fuel return from these engines back to the ship’s tanks.
In addition, there are visual sight gauges the forward end of each tank that let you
see the level in each.
Failure to have the same tank supplying and returning fuel risks
spilling fuel as the tank getting the “returned” fuel ove
rflows.
4L6: Fuel Manifolds
The Fuel Manifold is located directly under the generator cabinet doors. Each
engine has a fuel supply and, since extra fuel is pumped to the engine that is
used to cool the engines injection pump, there is a fuel return line as well. At
slow speeds, these return lines are pumping a lot of fuel; you must be careful
not to set the valves so that a return line is switched to a tank for long that is not
also supplying fuel, lest it overflow and pollute the water through the tank vents’
overflowing!
4L7: Fuel Measurement
There are very accurate sight gauges on the forward, inboard corner of each tank
(see illustration above). To see the fuel level in the sight tubes, open the small
black valves at both the top and bottom of the sight tube.
The sight tube goes up the cor-
ner of the tank. The top one of
its two valves is visible at
the top of the picture. Another
valve is at the tube’s bottom.
Fuel manifold. Note valve
handles are all vertical!