Home' Ships and Shipping : August 2009 Contents Hyundai Heavy Industries (HHI) has
recently delivered a 216,000m3 LNG
tanker to QGTC of Qatar.
'Mesaimeer' has an overall length of 315
metres, a beam of 50 metres and a depth of
27 metres with a designed draught of
Equipped with five Mark III membrane
cargo tanks, the ship has a flush deck
without forecastle and has a lowered
mooring deck, transom stern and twin
screw propellers driven by two conventional
diesel engines with a re-liquefaction plant.
'Mesaimeer' has a flat deck configuration.
It gives easy access from the central control
room (CCR) situated just below the
wheelhouse, to the compressor room and to
the trunk deck for easy survey, inspection
and maintenance of the cargo piping and
the electric cable.
A shore manifold is provided on each
side of the upper deck by the number three
tank. A compressor room is arranged on the
starboard side on the upper deck between
tanks four and five.
Tank insulation is of the GTT Mark III
system, which has a 270mm thickness to
satisfy the low boil-off rate of 0.15 percent
by volume of the total cargo per day.
After broad and extensive testing and
analysis, the cargo containment system has
been reinforced, with the vessel's unusually
large cargo tanks (compared with the
conventional size of the 150k class) in mind.
Cargo loading is performed by shore
pump facilities after the cargo tank has
cooled to the proper temperature. Vapour
generated during loading is returned to
shore via heavy-duty compressors on board.
During voyages with a full load, gas
generated by boil-off is re-liquefied and
returned to the cargo tanks. Thanks to the
re-liquefaction plant, there is no loss of LNG
cargo. As with most other cargo vessels,
heavy fuel oil is used for propulsion.
The cargo is discharged by two electric
motor-driven, submerged cargo pumps
provided on the bottom of each cargo tank,
each with a capacity of 1,400m³ per hour,
and supplementary gas is received from shore
or produced by the onboard LNG vaporiser if
necessary throughout the discharge operation
to maintain cargo tank pressure.
The ship is equipped with an emergency
cargo pump for emergency cargo discharge,
in case both cargo pumps in a tank fail at
the same time.
The engine control room and the cargo
control room contain all facilities to allow
the centralised operation of the plant and
equipment and to allow the unattended
operation of the machinery plant under all
The control consoles within each space
form part of a DACS (Distributed Alarm
and Control System), which is designed
and implemented to ensure a high level of
fault tolerance such that the failure of any
single component, power supply or device
does not prevent normal systems operation
or compromise the integrity of the system.
The central control room is located
on the accommodation deck and allows
the centralised control of loading,
discharging, ballasting, de-ballasting and
continuous monitoring and control of the
cargo handling system, including the
'Mesaimeer's' sister vessels 'Al Khaitiyat'
and 'Al Rekayyat' were also delivered in 2009.
For further information contact:
Hyundai Heavy Industries (HHI), Korea.
PH: +82 52202 2114, FX: +82 52202 3470,
Type of vessel:
Port of registry:
DNV +1A1, Tanker for
Liquefied Gas OPP-F E0
F-AMC ICS NAUT-OC
CLEAN COAT-2 CSA-2
PLUS-2 BIS TMON
Majuro, Marshall Islands
Hyundai Heavy Industries
4 x MAN B&W 8L32/40
2 x MAN B&W 6S70ME-C
2 x Hyundai
1 x MTU 16V2000P
August 2009 SHIPS AND SHIPPING
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