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World Cat – South Africa
All Cats Are Not Created Equal
There are three basic hull designs in the power catamaran class.
Each Cat hull design has its own attributes. Each design tries to
maximize the comfort of ride in relation to speed, fuel efficiency,
load bearing capacity and handling. All of the following catamaran
designs will perform considerably better than a monohull.
 Full Displacement Hull
Employs the same basic design as a
sailing catamaran with a narrow, tall
hull, designed for maximum comfort
in heavy seas. This design offers less
fuel efficiency and stability due to
its narrow, tall hull design as well as
an inability to plane. Hull enhancements
with several chines to help lift
the boat are employed.
The narrow
hull does not allow for maximum
load capacity or stability, and has
more lateral movement than other
designs. Attempts to eliminate this
include adding one dolfin to each engine.
There is also considerably more
vertical movement at rest than other
designs due to narrower hull design.
Maximum horsepower ratings are
lower due to hull speed and ability
of narrow hulls to hold weight.
The inability to trim the bow to get
the sponsons out of the water also
makes the boat more susceptible to
bow steer as the sponsons act like
two keels in the water in a following
or head sea.
 Planing Hull
Employs a V-bottom flatter surface
to get the boat up on plane for maximum
speed, but has a harder ride
due to the flat surfaces of the hull
bottom.
When coming down after
launching the boat there is more of a
slamming effect. This is not as severe
as a monohull, but very noticeable
compared to other power cats. There
is also a problem with lateral movement,
which they have tried to
address with the use of trim tabs.
 Semi-Displacement Hull (World Cat)
This design combines the best
of both worlds. Hulls with wide
oval bottoms provide the best lift,
stability and load bearing capability.
Greater buoyancy allows for higher
horsepower ratings and the best
balance of comfort and efficiency.
There is very little lateral movement,
and no enhancements are needed
to make this hull design perform.
It has the widest footprint in the water,
offering the best stability and speed
to comfort ratio.
The design allows for large fish
boxes, deep storage in hulls and
maximum usable space. Rated at
450HP on the 270 models, the fuel
efficiency and range is unmatched,
making it the ultimate choice for
the serious offshore fisherman or
pleasure boater seeking the best of
both worlds.
World Cat was the first
Cat builder to be yacht certified and
has more CSI Awards than all other
Cat builders combined! |
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Comparison brochure (982KB)