Home' Work Boat World : September 2009 Contents VT Fitzroy's Auckland dry dock continues to be busy with the
Cook Strait New Zealand Passenger / Ro-Ro ship 'Santa Regina'
dry docking in July.
The 'Santa Regina' is operated by New Zealand company Strait
Shipping and at 14,588GRT with a 22.56-metre beam is the widest
vessel that has been dry docked by VT Fitzroy. With a lateral
clearance of around 500mm when passing through the dock gate,
this vessel is likely to remain the widest for some time.
Apart from classification requirements, one of Strait Shipping's
key objectives for the dry docking was to improve the 'Santa
Regina's' underwater performance by lowering the resistance of the
hull. Over the years and many dockings and applications of primers,
build coats and anti-foul, the vessel has an overbuilt rough surface.
As completely stripping the underwater hull and applying a new
generation coating system was considered uneconomic for the age
of the vessel, the aim was to utilise ultra-high pressure water
blasting to remove a large amount of the over build leaving a tight
well-adhered coating behind and a smoother surface. An Altex
Coatings system including three coats of Carboline:Carboguard 635
and three coats of Sea Barrier 4000 antifouling will then be applied.
Orthodox high pressure water blasting and painting of the hull
topsides and superstructure sides, the stern door and some deckhouse
areas was also planned. Other work package items included steelwork
repairs in way of shell indents and in tank top areas.
Engineering repairs included tail shaft and sea valve surveys,
bow thruster service and assistance with main engine repairs.
Outfitting items included renewal of galley flooring systems,
ventilation systems and internal preservation.
The 'Santa Regina' was in dock for 14 days undocking on
The 85 metre, 3,502GRT research survey vessel 'Geobay' arrived
at VT Fitzroy's repair berth on July 26 to carry out class renewal
surveys prior to dry docking on August 5.
This will be VT Fitzroy's first dry docking for Singapore-based
DOF Management, with the dry dock work package expected to
include: hull ultrasonic thickness gauging and machinery surveys;
cropping of shell plate for bow thruster motor replacement;
servicing of the vessel's two azimuth propulsion thrusters;
preservation of underwater hull, topside hull and decks; servicing
of the 30-tonne deck crane; servicing of ventilation and air
conditioning systems; overhaul of engine and generator systems;
survey of sea valves, anchors and cables and miscellaneous repairs
to ballast and general pumping systems.
VT Fitzroy is approved by the major classification societies to
carry out hull ultrasonic thickness gauging.
During the vessel's survey period, VT Fitzroy will also assist the
vessel charterers DOF Subsea Australia with replacement of the
vessel's ROV deployment system.
VT Fitzroy has managed the Dry-dock and Marine Engineering
Facility in Auckland since July 2004, where it carries out ship repair
and marine engineering maintenance for the New Zealand Navy
and New Zealand and overseas commercial vessels. In the 2008/09
financial year VT Fitzroy achieved its first 100 percent dry dock
occupancy with vessels dry-docked and maintained including: an
Australian-owned cruise ship and LPG carrier; United States-owned
cruise ship; Danish-owned parcel tanker; Norwegian-managed
seismic survey vessel, Japanese fishing vessel, Tahiti-based
passenger/cargo vessel; several New Zealand-based commercial
vessels including Ro-Pax and cargo vessels; the French Navy light
transport vessel 'Jacques Cartier' and New Zealand Navy frigates
and support vessels.
For further information contact:
VT Fitzroy, New Zealand.
VT Fitzroy -- 14,588 GRT Cook Strait ferry in dry dock
September 2009 WORK BOAT WORLD
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