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January 2011 SHIPS AND SHIPPING
Classification society Det Norske Veritas
(DNV) has unveiled a new crude oil
The "Triality" concept VLCC is fuelled
by LNG, has a hull shape that obviates the
need for ballast water and very greatly
reduces local air pollution.
This concept vessel also recovers
hundreds of tonnes of cargo vapours on
each voyage and represents a major step
towards the new environmental era for the
tanker shipping industry, according to DNV.
The new crude oil concept vessel,
named Triality, has been developed
through a DNV innovation project.
DNV CEO Henrik O. Madsen, who
presented the new concept in its VLCC
version in the UK, said: "I am convinced
that gas will become the dominant fuel
for merchant ships. By 2020, the majority
of owners will order ships that can operate
on liquefied natural gas (LNG)."
The Triality concept VLCC has been
compared to a conventional VLCC. Both
ships have the same operational range and
can operate in the ordinary spot market.
Compared to the traditional VLCC, the
Triality VLCC will emit 34 percent less
CO2 , and use 25 percent less energy,
according to DNV.
The new concept tanker has two
high-pressure dual fuel slow speed main
engines fuelled by LNG, with marine gas
oil as pilot fuel. The next phase of the
Triality concept development will review
the use of dual fuel medium speed engines
and pure gas engines.
Two IMO type C pressure tanks capable
of holding 13,500m3 of LNG -- enough for
25,000 nautical miles of operation -- are
located on the deck in front of the
superstructure. The generators are dual
fuel (LNG and marine gas oil) while the
auxiliary boilers producing steam for the
cargo oil pumps operate on recovered
cargo vapours (VOCs).
The new V-shaped hull form and
cargo tank arrangements completely
eliminate the need for ballast water in
the VLCC version. There will also be
much less need for ballast water on
other kinds of crude oil tankers, such as
Suezmax, Aframax and smaller ships.
The new hull shape results in a reduced
wetted surface on a round trip and has a
lower block coefficient and thus a more
energy efficient hull.
The Triality VLCC can collect and
liquefy more than 500 tons of cargo
vapours during one single round trip.
These liquefied petroleum gases will then
be stored in deck tanks and up to half will
be used as fuel for the boilers during cargo
discharge, while the rest can be returned
to the cargo tanks or delivered to shore
during oil cargo discharge.
The Australian federal government has
released a discussion paper outlining
reforms to "reverse the decline of
Australia's domestic shipping industry".
"Currently Australia has only 30
registered major trading ships carrying less
than half of one percent of our huge
export trade -- down almost 50 percent in
little over a decade due to the policy
neglect of the former government," said
the Minister for Infrastructure and
Transport, Anthony Albanese.
"Without significant economic and
regulatory reforms our entire merchant
fleet as well as the skilled workforce it
trains and supports could be gone within
"We're at that point," he told The
Australian on December 2. "It reaches
a point where you literally don't have
The government wants to introduce
new tax arrangements to attract greater
investment into the industry; overhaul
seafarer training and make the Australian
Maritime Safety Authority the regulator of
all commercial vessels operating in
Business groups say some of the
proposals will make it harder for businesses
to use cheaper foreign-flagged ships.
Shipping Australia (SAL) chief
executive Llew Russell -- whose
members include the local arms of big
foreign-owned lines such as Maersk and
Hamburg Sud -- accused the government
of being "very protectionist".
He said the result will likely lead to
higher costs, which in turn will mean
more cargo on the rail system and/or
"Under the current system, if a licensed
Australian flag vessel is available on the
coast a permit cannot be issued. Why
change a system if it ain't broke?"
The Maritime Union of Australia
(MUA), however, has welcomed the
MUA National Secretary, Paddy
Crumlin, said changes to ship licensing
and ship registration, combined with
taxation measures like a tonnage tax,
which will replace corporate tax, will
increase investment in Australian ships.
"It has the potential to build a major
new service industry in Australia and will
attract foreign capital and lead to new
investment and new jobs.
However, Australian Shipowners'
Association executive director Teresa
Hatch said she did not think the issue was
about cabotage, but rather about the
uncompetitiveness of Australian shipping.
DNV unveils LNG-fuelled VLCC "Triality" concept
The hull form and arrangement of the "Triality" design
The DNV "Triality" design
Australia discusses tax breaks to boost shipping
Australia's Port Botany: Australia's disappearing
domestic shipping has become a political
issue; competitiveness and protectionism are
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