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One
of the two main propellers on the stern of the Columbia
Queen in Dry Dock 1 (598' long). Power is provided by two
Cummins 1350 HP engines. Additional propulsion is provided
by a pair of Schottel azimuthing stern thrusters with fore
and aft facing propellers. Cascade General machinists installed
one of the 51" diameter, five-bladed Rice main propellers
on the Columbia Queen. The entire stern thtruster system
was an addition to the original design to increase the ship's
speed and maneuverability.
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View
of the stern compartments in the Columbia Queen, where a
new, aft engine compartment was created. One of the two
stern thruster shafts is shown passing through the aft bulkhead.
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Up-angled
shaft to one of the two Schottel sternthrusters which were
retro-fitted into wells in the transom. These units also
provide 1.5 knots additional cruise power in fore-and-aft
mode.
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One
of the four Cummins diesels installed by Cascade General
in the Columbia Queen's two engine rooms. Two of these engines
were lifted out of the engine room and moved aft to a new
machinery space where they were connected to a pair of azimuthing
stern thrusters.
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A
stern thruster drive shaft in the stern compartment angled
up to meet the transmission head on the Schottel stern thruster.
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Port
and starboard helm stations on the bridge wings carry a
complete set of duplicate controls, giving the captain full
visibility while docking. The hinged stainless steel covers
protect the instrument array from rain and spray.
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The bridge is equipped with
three independent steering systems and separate throttles
for the two mains, two stern thrusters and bow thruster.
Electronics include a GPS plotter, radar and aft-looking
TV camera.
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