Home' Ausmarine : September 2009 Contents The 'Tiger' series of catamarans from the
board of Ron Given is probably one of
the world's most enduring: a continuous
run from 1960.
The latest is the 'Glass Tiger T11' in
production at the Henderson factory of
Seafest Marine, headed by one of Western
Australia's most experienced and respected
builders in fibreglass, Mark Price.
With an eleven-metre measured length
on a beam of 4.6 metres, the vessel was
originally intended for the leisure and
charter markets, but is now being offered in
a choice of several layouts and propulsion
packages to suit roles in policing, fisheries,
national parks and marine safety patrol,
and rescue work.
One of the 'Glass Tiger's' attractions to
charter operators is its standard twin
outboard propulsion system. The lower first
cost and reduced maintenance costs -- further
reduced by all the running gear being clear of
the water when not actually in use -- are
welcome, but the repair-by-replacement
possibilities are especially attractive in
ensuring constant availability.
A further feature, useful in both patrol
and charter work, is the vessel's ability to
operate in shallow water and to beach.
Recent motor choices have been 224kW
Mercury Verados and 261kW Yamahas.
Outboards on smaller catamarans are a
great deal easier to service and carry out
repairs on than inboards. Inboard
installations are typically a shoehorn fit,
and often it is simpler to remove them
from the vessel for anything other than
simple work. On the other hand, buyers
have ordered 'Glass Tigers' with diesel
sterndrives and the installations have been
a great success. Seafest also offers shaft and
water jet packages.
EMP Composites and Nupol Composites
have completely engineered the 'Glass
Tiger's' structure, and Seafest uses
techniques that assure utter consistency,
light weight and long life. Reinforcement
consists of combinations of multiple
stitched fabrics and carbon fibre over closed
cell PVC Divinicell. The resin is vinylester
throughout. The materials are laid up dry,
then vacuum resin infused. This system
eliminates any air entrapment and void
problems, and creates a resin to glass ratio
of 1:3 -- the opposite of that delivered by
the typical chopper gun method.
It also creates a bare hull weight of just
four tonnes and consequent fuel economy.
On twin four-stroke outboards at 20 knots
consumption is 2.7 litres per nautical mile;
at 17 it is just 2.2. The 'Glass Tiger' planes
at only 12 knots. At the other end of the
spectrum, a Given Tiger cat holds the world
outboard record for the 900nm New
Zealand-Noumea passage, won on a
The leisure and charter layout of the 'Glass
Tiger', minus the luxury features of the fit
out, could well suit a patrol boat's
specifications. Seafest is also offering the
vessel in stage one form -- a hull with all
mouldings complete and capable of accepting
whatever layout a customer might want.
The current layout features two double
and one twin sleeping cabins in the lower
accommodation deck, sharing a very large
bathroom. The main deck has a roomy
saloon and galley ahead of a usefully large
cockpit, and the control station is towards
the rear of a spacious fly bridge.
A version is available that deletes the fly
bridge and has a raised main deck giving
greater volume to the accommodation deck.
The saloon has ample area to accept the
control station, chart table, extra instrument
consoles and any wanted special features. A
tender can be mounted on the coach roof or
on a rack above the outboards.
The company building the 'Glass Tiger'
has a Western Australian reputation second
to none. As well as producing some of the
state's most admired vessels, Seafest is the
fibreglass builder of choice for re-builds,
repairs and upgrades. The last has become
important for all builders, as owners
For further information contact:
Seafest, Western Australia.
PH: (08) 9437 5510,
FX: (08) 9437 5512,
Type of vessel:
Draught, legs up:
Draught legs down:
Displacement, full load:
Police vessel/patrol craft
Seafest Marine, Western
2 x outboard, 168 -- 261kW
September 2009 AUSMARINE
'Glass Tiger T11'
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