Boating Tips; Performance Factors; Engine Efficiency; Propeller Condition - World Cat 2009 boat Owner's Manual

World Cat

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 cata-
maran:
• 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.

PERFORMANCE FACTORS

Proper setup and maintenance of the systems on your boat is important to ensuring proper perfor-
mance, 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.

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 proce-
dures 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.

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.

WEATHER CONDITIONS

Barometric pressure and humidity can affect the output of your engines. For example, on an
extremely hot and humid day, your engine can experience as much as a 10 percent loss in horse-
power. Although you should monitor your engines' performance, be aware that the weather could be
a major factor in your boats performance.
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