I trust the following data will assist anyone who is considering buying a trailer sailer, but might not be sure of how big and heavy it might be, particularly with respect to whether it can be towed by the family car and parked in the driveway at home.
The following have been copied from the
Australian Trailable Yacht and Sports Boat Rule (which provides an indication of how fast the boat is) and the Austral 20 Brochures in
John Crawford's Library
| Dimension |
Value |
| Class based handicap (CBH) |
0.650 |
| Length overall (LOA) |
6.09m |
| Length of waterline (LWL) |
4.50m |
| Beam |
2.38m |
| Max draft |
1.52m |
| Min draft |
0.30m |
| Advertised displacement (compare displacement below) |
862kg |
| Jib |
8.36m2 |
| Main |
8.73m2 |
| Genoa |
14.50m2 |
| Spinnaker |
33.45m2 |
| Advertised price 1977, boat |
$6737 |
| Advertised price 1977, trailer |
$645 |
The following have been measured from my boat. The numbers for my boat may differ from yours. I've published these numbers in good faith, and accept no responsibility for what you may use them for.
| Part |
Item |
Weight (kg) |
Notes |
| Trailer |
Wheel and tyre |
21 |
Two per trailer |
| Trailer |
Tow-away trailer and frame |
376 |
Kessner single axle tilt trailer. Weighed on weigh bridge 22-06-2017 |
| Boat |
Keel |
211 |
Cast steel keel. Major dimensions = 1620 x 455 x 37mm. |
| Boat |
Mast |
31 |
Major dimension = 7710mm |
| Boat |
Mast spreaders |
Included in mast |
Major dimension = 680mm |
| Boat |
House battery |
9 |
Small battery 27AH |
| Boat |
Rudder |
9 |
Fibre-glass construction |
| Boat |
Tiller |
1 |
Solid timber |
| Boat |
Bow anchor |
6 |
Danforth galvanised steel |
| Boat |
Bow anchor chain and rode |
7 |
Galvanised steel chain and nylon rode |
| Boat |
Stern anchor |
2 |
Galvanised steel grappling anchor |
| Boat |
Outboard motor |
29 |
Yamaha 6HP 2 stroke long leg |
| Boat |
Bow mast holder |
2 |
Pine timber |
| Boat |
Stern mast holder |
2 |
Pine timber, galvanised steel and roller |
| Boat |
Genoa |
2 |
Wire luff |
| Boat |
Jib |
1 |
Dacron with wire luff |
| Boat |
Spinnaker and bag |
1 |
|
| Boat |
Storm jib |
1 |
|
| Boat |
Mainsail and boom |
10 |
Boom length = 2400mm. Roller reef and slab reef |
| Boat |
Spinnaker pole |
1 |
Aluminium tube |
| Boat |
Fenders x 4 |
3 |
|
| Boat |
Floor boards |
14 |
|
| Boat |
Interior cushions |
18 |
|
| Boat |
Big fuel bowser |
15 |
Including petrol. Connected to outboard |
| Boat |
Small fuel bowser |
5 |
Including petrol. 10 litre backup |
| Boat |
Timber step and builder's tub |
11 |
Normally left at home for engine flushing |
| Boat |
Lifejackets x 4 |
3 |
|
| Boat |
Mast support post |
4 |
|
| Boat |
Tools and first aid kit |
4 |
|
| Boat |
Miscellaneous ropes and lines |
7 |
|
| Boat |
Grab box |
2 |
|
| Boat |
Fire extinguisher |
1 |
|
| Boat |
Tie-down strap |
1 |
|
| Boat |
Hull and all fixtures |
683 |
Every 'boat' item not included above. Estimated from balance of weights |
| Boat |
Displacement (Sail-away weight) |
1095 |
Estimated from balance of weights |
| Total |
Trailer and boat tow-away weight |
1471 |
Weighed on weigh bridge 02-01-2018 |
According to the numbers, the boat appears to have taken on weight from its youth in 1977 to middle age in the present day, increasing its displacement by 233kg from 862kg (as advertised) to 1095kg. Who said that boats were not like their owners?
