Home' Ausmarine : December 2009 Contents Cawthorn Welding is a metal fabrication
and boat building business located south
of Hobart at Electrona Industrial Estate.
Rob Cawthorn established the business
approximately 16 years ago through
a contract to build an eight-metre
aluminium fishing boat.
In 2008 he tendered for the design and
construction of two purpose built aluminium
barges for the Australian Antarctic Division
to work in the frigid waters off Antarctica,
basically ferrying supplies from the supply
vessel to the shore and load return freight to
the vessel from Casey, Mawson, Macquarie
and Davis bases.
Happily, Rob Cawthorn won the
contract, and with the first barge 'Billy
Budd' working successfully in her role since
her delivery on January 9, 2009, he is about
to supply the second barge, 'Peter Gormly'
to the Australian Antarctic Division,
conveniently located just up the road at
Kingston, allowing easy communication
consultation and input.
'Peter Gormly' (named after a former AAD
staff-member) is a no-nonsense vessel,
impressive in its obvious strength and
functional ability. 13.1 metres in overall
length, she is built of heavy grade marine
aluminium with heavy scantlings and
impressive fendering. The owners chose to
engine her with twin Cummins BT 5.9
157kW engines with ZF 220 gearboxes
coupled to Hamilton HJ274 water jets.
This combination is both economically
viable and also environmentally friendly
and suited to operation in the pristine and
eco-sensitive Antarctic waters. The
Hamilton jets also provide incredible
manoeuvrability and the performance
required to work reliably in the choppy to
very rough conditions often encountered.
The main freight to be moved on and
off the barges is containerised and loaded
and unloaded by crane as the vessel has no
cargo handling equipment.
There is a ramp that can be manhandled
into position at the for'd end to allow other
forms of freight to be wheeled or pushed
manually on or off the barge when required.
The deck area is surprisingly spacious
and unencumbered, with a Spartan high
visibility orange wheelhouse sited on the
port side aft above the port engine, and a
breather box and exhaust for the starboard
engine on the starboard side.
Sturdily constructed throughout, the
deck is of 6mm Checkerplate, allowing a
25 tonne payload to be carried. The
remainder of the hull is also constructed of
6mm aluminium. Under the bow there is
a 10mm "bash plate" with additional
vertical wear plates constructed of 10mm
aluminium in 100 x 12mm sections to
allow for grounding.
Heavily fendered on all corners there is a
substantial D section 150mm rubber fender
running across the bow as well to cushion
any impact with ice, or the mother vessel.
On completion of 'Peter Gormly' the
yard has another large commercial vessel to
refit and orders for several new buildings in
For further information contact:
Cawthorn Welding, Tasmania.
PH: (03) 6267 9305, FX: (03) 6267 9452,
Type of vessel:
In survey to:
Antarctic supply barge
Australian Antarctic Division
Jon Kemp, Oceantech
Design, South Australia
10.5 tonnes lightship,
35.5 tonnes loaded
2 x Cummins 6BT5.9,
2 x HamiltonJet HJ274
GME TX4800 VHF
1 x RFD 25-person
2 x 300 litres
December 2009 AUSMARINE
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