World Cat 230CC, Owner'S Manual

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5.8.6 Handling Different Sea Conditions
• Head Sea: trim motors down to keep the bow down.
• Following Sea: trim up to keep the bow out of the water.
• Calm water: trim engines up to run on the back of the hull.
5.8.7 Boating Tips
Experience is the best way to determine the handling characteristics of your catamaran. Operating the boat
in multiple sea conditions and under various loads will help you predict how the boat will perform in any
situation. World Cat provides the following recommendations regarding the performance of your catamaran:
•
Establish an RPM chart which details the speed and fuel consumption at various RPM levels
to achieve the most economical operation.
• Monitor fuel gauges to determine the amount of operating time remaining at a given reading.
• Determine minimum speed for effective steering in close quarters.
• Determine the turning radius required at various speeds.
• Determine the rates of acceleration and deceleration with various load conditions. Include
the distance required to stop the boat at various speeds.
Use the information provided in section 6 of the Sportfish, Cruisers, Yachts Owner’s Manual for more
information on boat handling.
5.9 Performance Factors
Proper setup and maintenance of the systems on your boat is important to ensuring proper performance,
but be aware they are not the only factors which affect it. Several things which contribute to the level of
performance of your catamaran can change between or during trips.
5.9.1 Engine Efficiency
Without proper maintenance, your engine(s) will gradually lose power, resulting in a loss of speed. Use the
recommendations in the engine’s owners manual to schedule routine maintenance procedures and as a
guide for the correct RPM range for your engines. Neglecting to do so may result in loss of performance and
an increased risk of failure.
5.9.2 Propeller Condition
The size and condition of your propeller also plays a major role in the performance of your catamaran.
A damaged propeller can result in lower speeds, sudden drops in RPM, increased fuel consumption, and
severe vibration while running. Improperly sized propellers can cause damage to your engine as a result of
exceeding the maximum or minimum RPM levels.