MAERSK HOLYHEAD 20,500 m3 type LPG Carrier
The 20,500 m3 type LPG carrier MAERSK HOLYHEAD is the second ship of 2 sister "bi-lobe" type LPG carriers built by Mitsui Engineering & Shipbuilding Co., Ltd. (MES), and one of the world's largest LPG carriers of this type. The vessel has four "bi-lobe" tanks and total tank capacity at -48℃ is 20,851 m3.
The vessel can carry twelve kinds of cargo ranging from LPG to chemical gases such as anhydrous ammonia, vinyl chloride monomer (VCM), isoprene and propylene oxide.
The cargo tanks are designed to 5.4 bar with cargo density of 0.972.Extensive FEM analysis made to verify the stress level in the cargo tanks, and its accuracy was confirmed in the hydraulic tests.
Three sets of re-liquefaction plants are provided to carry two grades of cooled cargo, and also one uncooled cargo can be loaded simultaneously. Further, various cargo handling machinery / equipment are also provided, i.e. booster pumps, cargo heater / vaporizer, IGG with CO2 stripper, and nitrogen padding system, in order to enable flexible operation for a variety of cargoes.
Bridge design is based on one-man watch (W1-OC for equipment and W1 for layout inside bridge).
PRINCIPAL PARTICULARS
Length (o.a.) ... 159.00 m
Length (b.p.) ... 151.00 m
Breadth (mld.) ... 26.00 m
Depth (mld.) ... 16.30 m
Draft (mld.) ... 10.50 m
Gross tonnage ... 17,980
Deadweight ... 23,272 MT
Main engine ... Mitsui-MAN B&W 6S50MC
MCR ... 9,900 PS x 108 rpm
NOR ... 8,910 PS x 104.3 rpm
Speed (service) ... 15.67 knots
Complement ... 30
Classification ... DNV
Cargo pump ... Deepwell 250 m3/h x 120 m x 8 sets
Loading capacity (tank) ... 20,851 m3 (excl.dome, 100%, at -48 ℃)
