Fishing Vessel Conversion - Austral Leader 2
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The Hydraulic Specialties service team
was involved in the complete conversion of the fishing vessel,
Austral Leader 2 from a purse seiner net fisher to a long liner.
The job, in summary, was the refitting of a vessel to a line hauler
and pot hauler for the Patagonian tooth fish for which our customer
fishes in the South Atlantic.
It involved several stages and over 1500 hours work by our service
technicians over the course of around 8 weeks. Not only were
we providing new equipment but also had to utilise existing
The factory had to be built from scratch, and the factory
processing system re-designed in consultation with the customer and
other contractors. We designed and manufactured the
power system for the line hauling system which included the main
and after hauler, hook separator, baiting machine and rotation
rack. The system had to operate a maxium 165 l/min and up to
The Hanson Hauler, which is similar to a large single winch and
storage drum system, was designed with specs of a maximum flow of
750 l/min and pressure up to 206 bar. Incorporated into this
was the auxiliary system to run the anchor windless. The
anchor windless system was also re-designed which involved a
hydraulic motor to drive another hydraulic screw pump. This was
necessary as the ships electrical system was limited in its output,
to drive the anchor pump. A large electrical change over valve was
designed and manufactured by HYTECH to handle the 750 l/min of oil
flow. In relation to the Hanson Hauler were the pot conveyors
which were a new concept and the hydraulic system had to be
installed to run it, along with a Comer gearbox, supplied by
HYTRANS, to get the torque and speed required by the
customer. The pot conveyor had to run 30 pots along a deck
chain drive, each pot weighing around 50kg.
We also installed 4 sets of winches for various applications. The
Deck Crane had to be stripped and an evaluation had to be completed
to conclude the best system and as a result a Palfinger radio
remote control system was installed.
In summary our technicians were involved with the following areas
of the vessel: The Factory, Pot Conveyor, Hanson Hauler, Baiting
Machine, Line Hauler, Deck Crane, Winches, Fish Muncher, Anchor and
the supply of spare parts.