Trinity
Arrow is the newest LNG Carrier with membrane type built by the
famous shipbuilder Imabari. The vessel has a cargo capacity of 154,900
cubic meters The vessel was built into the ship-yard of Koyo Dockyard
and the owner of the beautiful LNG Carrier is Trinity Transport
S.A. Trinity Arrow has a deadweight of 79,556 metric tons and gross
tonnage of 108,010 metric tons. The overall length of the vessel
is 289.93 meters and the length between perpendiculars is 276 meters.
The other measurements of the vessel Trinity Arrow are beam of 44.70
meters, draught of 26.00 meters and draft, while fully loaded of
12.07 meters. On board of this LNG Carrier is installed main engine
KAWASAKI UA400, which is giving to the vessel full power of 29,420
kW. This power is enough for the ship to reach the maximum cruising
speed of 20.15 knots. But maximum speed of the ship is nearly 1
knot more, or 21.20 knots. But on board of the vessel there are
many systems, because the cargo of such ships is very hard for transportation.
The Trinity Arrow is the first LNG carrier in a series
of four to adopt GTT’s M-III Membrane system. The ship is developed
to be easier for maneuvering and to be proper for many ports and
LNG terminals
of the world. And this is easy for understanding, because so large
ship with so dangerous cargo will not be welcome in each port. That
is why from Imabari had developed the safety system of the vessel.
And now we see Trinity Arrow with perfectly and almost 90% sure
system for loading and discharging of very dangerous and explosive
cargo. The more rational hull construction and equipment comply
with the Lloyd’s Register’s (LR) Rules and Regulations
and effective notations such as ShipRight (SDA, FDA plus, CM), to
ensure safe operation and navigation. For the FDA, the vessel employed
LR design appraisal document of 40 year lifetime which is confirmed
by LR’s 3-D FEM analysis based on the intended service routes
including North Atlantic, Middle East to Mediterranean and Europe,
Middle East to North America, and Middle East to Asia, etc.
The vessel has four cargo tanks, and the first cargo
tank is the “Trapezoidal tank in the horizontal direction”
in the LNG world, which is very efficient not only volume-wise compared
with an existing prismatic tank but also in gaining reduction of
fuel oil consumption as a result of the advanced hull shape.
The all hull and shape are designed with double hull
construction with double bottom, double side shells, and trunk deck
forming an octagonal section. The bulkhead of each tank is provided
with a cofferdam and space heated by circulating glycol water to
keep the temperature above +5 degrees C due to the physical properties
of the steel in accordance with the requirements of the IGC code. date: 24th July, 2008
