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Gas carriers carrier. It has also signed heads of agreement with Nippon
First Polar LNG
Yusen Kaisha for joint ownership of the ship (Tokyo LNG
Tanker: 10%, NYK Line: 90%), and a time charter for 20-
carrier
year term of the carrier.
This will be the eighth LNG carrier in Tokyo LNG
Knutsen OAS Shipping has ordered the first liquefied Tanker’s fleet, but will achieve 14% more capacity than its
natural gas carrier to be specifically designed to operate in 155,000m
3
design forerunners.
Arctic waters. Featuring four spherical Moss-type tanks, the carrier will
The shipowner has signed with South Korea’s Daewoo be equipped with Kawasaki’s advanced reheat turbine plant
Shipbuilding and Marine Engineering for what will be for propulsion – a first for an LNG carrier – conferring a
the fourth LNG tanker in a series, with the latest ship to claimed 15% higher fuel efficiency.
be delivered by late 2010. The vessel is based on the same After its completion in 2011, together with existing
173.400m³ storage capacity as its forerunners, and will LNG carriers, the ship will transport LNG cargoes from
feature dual fuel diesel electric Wärtsilä engines and a twin Northwest Shelf Expansion Project, Malaysia I and III
skeg propulsion solution. Project, Darwin Project, Sakhalin II Project, Pluto Project,
However, ‘NB 2275’ will have the highest Det Norske Gorgon Project and other projects.
Veritas Ice Class-1A, and will be winterised to operate in
air temperatures as low as minus 30ºC. Regulation
A Knutsen source said that the new ship would feature
reinforced scantlings, while its hull would be specified as
IMO bumps
having an extended fatigue life to accommodate anticipated
ballast…
greater hog and sag forces generated by vibrations and
stop/start motions as the ship ran through ice, while its Agreement has been reached at the Assembly of the
bow section and rudder would also be strengthened when International Maritime Organization to delay the
compared to its forerunners. enforcement dates for new ships’ ballast water treatment
Discussions were continuing between customer, yard, equipment envisaged by the 2004 Ballast Convention.
and class over the complete propulsion solution. While a Mindful of the lack of type-approved equipment
diesel electric system would be preferred, an issue remained capable of meeting the Convention’s technical annexes, the
over stresses acting on reduction gears, and whether these Assembly agreed that new ships built from 2009 will not be
should be beefed up, or whether direct electric propulsion required to have the new equipment fitted until their second
should be favoured. annual survey or the end of 2011 (whichever is sooner).
Also up for discussion was the full winterisation package. The International Chamber of Shipping, which had lobbied
There was a need to incorporate protected mooring winches for the delay, said that ‘a major obstacle to ratification by
in the bow area, for example, while areas of the ship, and governments has thus hopefully been removed’. In the
particularly ballast tanks, would need to be heated. meantime, ICS said its members ‘remain committed to
performing deepwater ballast exchange, whenever it is
Gas carriers safe to do so, and cooperating with voluntary coastal state
Largest Pacific LNG
requirements’.
carrier
Regulation
Tokyo Gas subsidiary Tokyo LNG Tanker Co has signed
Wallenius takes lead
a shipbuilding contract with Kawasaki Shipbuilding Corp Wallenius Marine has signed the contract with Alfa Laval
covering a newly designed 177,000m
3
tank capacity LNG for seven PureBallast ballast water treatment systems.
The contract involves seven retrofit systems to be installed
on Wallenius Lines’ newest vessels. Four installations are
The newly designed 177,000m
3
capacity LNG carrier
planned for 2008 and another three for 2009.
for Tokyo Gas.
PureBallast has been tested onboard the Wallenius
car carrier Don Quijote since 2003. Starting with Aida,
delivered in May 2006, PureBallast will be installed on all
Wallenius’ newbuildings.
PureBallast, developed in a joint venture between
Wallenius Water AB and Alfa Laval, has received the IMO
Active Substance Final Approval, which means it is the
world’s first IMO-approved ballast water treatment system.
The patented method, Wallenius AOT, is the core in the
ballast water treatment system.
The Naval Architect January 2008
NA Jan - p6+
8.indd 6 04/01/2008 15:16:01
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