World Cat 280CC-X, Руководство пользователя

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5.8.5 Keep the Boat Level (if the seas change or people move on the boat)
Trim the High-Side-High. When one side of the bow is high compared to the horizon, simply trim the
high-side motor up. (If it cavitates then trim the low-side-low). Different models have different sensitivity to
trim (do not over-correct as this may cause the boat to pitch in flat calm water at high speeds).
5.8.6 Handling Different Sea Conditions
• Head Sea: trim motors in to keep the bow down
• Following Sea: trim out 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 Yamaha engines 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 prop also plays a major role in the performance of your catamaran. A damaged
prop can result in lower speeds, sudden drops in RPM, increased fuel consumption, and severe vibration
while running. Improperly sized props can cause damage to your engine as a result of exceeding the
maximum or minimum RPM levels.