These boats are probably the easiest to relate to for the public. Displacements are, from a distance, the closest resemblence to your average water ski boat. With the engine mounted "inboard", usually at the rear of the boat.
Obviously these finely tuned racing boats are a little different than your average ski boat. Construction materials range from fibreglass & plywood through to the high-tech materials of kevlar & carbon fibre, making these craft very light and very strong in relation to your average ski boat.
The term "displacement" is derived from the the action of the boat "displacing" (pushing the water out of the way) the water as it moves through the water.
Displacement classes range from 3.4 litre skiffs all the way up to the monstorous Blown Alcohol Displacements.
View photos of some of Australia's displacement boats here.
Classes are based on engine capacity. There are generally no restrictions on engine configuration (straight 6, V8, etc) or make or model. There are exceptions in a couple of classes, which are generally aimed at controlled, even racing.
These classes are the most active displacement classes in Australia at this time:
Unlimited Displacement 6000 cc. Displacement 6000 cc. Prostock / Restricted 5200 cc. Displacement 105 mph Superstock 4600 cc. Displacement 4.2 Litre Stock Displacement
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- as at August 2006
Boat |
Driver |
Speed (kph) |
Venue |
Date |
|
|
|
|
|
Unlimited Displacement |
LIBERTY |
B McCosker |
214.12 |
Dargle |
31.7.94 |
|
|
|
|
|
Unlimited Racing Runabout |
|
|
|
|
THE REALTHING |
B Jordan |
202.56 |
Dargle |
10.7.05 |
|
|
|
|
|
Unlimited Side Valve Displacement |
|
|
|
|
SCRUBCAT IV |
J Long |
102.13 |
Lake Glenmaggie |
10.12.67 |
|
|
|
|
|
7500cc Displacement |
EVEN DEEPER |
W McMillen |
188.63 |
Dargle |
27.6.98 |
|
|
|
|
|
6000 cc. Displacement |
DUGGAN BALANCING |
R Psaila |
192.72 |
Dargle |
28.8.03 |
|
|
|
|
|
6000 cc. Carburettored, Cast Iron |
SMOKIN HEADS |
W Gauci |
187.79 |
Dargle |
28.8.03 |
|
|
|
|
|
5200 cc. Displacement |
MADNESS |
D Marland |
178.07 |
Dargle |
8.8.93 |
|
|
|
|
|
5200 cc. Carburettored, Cast Iron |
MADNESS |
T Marland |
176.54 |
Dargle |
31.7.94 |
|
|
|
|
|
4600 cc. Displacement |
CUT LOOSE - WILLPOWER |
S Brown |
161.94 |
Botany Bay |
12.8.95 |
|
|
|
|
|
4.2 Litre Stock Displacement |
PROBLEM CHILD |
W Smith |
150.38 |
Lake Wyangan |
14.4.90 |
|
|
|
|
|
|