No. 318 Aug. - Sept. 2006

Improved propulsive performance

Universal applies new energy-saving type Leadge Bow
to 81,000DWT bulker
Universal Shipbuilding Corporation has developed a bous bow, although the bulbous bow has customary been
new bow shape called Leadge-Bow, which is applied to considered to reduce the wave making resistance in still
low-speed blunt ships such as bulk carriers or tankers for water.
increasing propulsive performance in waves. Leadge-Bow
This means that Leadge-Bow shows the same perforis coined from combining “Leading” and “Edge.”
mance in still water as conventional ships with the bulThis bow shape is expected to decrease the required bous bow. In waves, on the other hands, Leadge-Bow canhorse power in waves by 4 to 5 % in comparison with the reduce the required horse power in waves by 4 to 5% comconventional bow. The first ship employing the new Leadge- pared with conventional ships, whose reduction rate is more
Bow will be an 81,000DWT bulk carrier to be constructed than that for Ax-Bow.
at the Maizuru Shipyard. The Leadge-Bow has been creUniversal Shipbuilding Corp. applied for the patent on
ated on the basis of the Ax-bow previously developed in Leadge-Bow in 2002 and released a technical report in
2000.
2003.
The Ax-Bow was first applied to the 172,000DWT CapeUniversal Shipbuilding Corp. has been focusing on imsize bulk carrier KOHYOHSAN built for Mitsui O.S.K. provement of the hull performance in actual use. The comLines, Ltd. in 2001. The navigation record of pany began R&D on the above jointly with Osaka UniverKOHYOHSAN has shown the required horse power is sity in 1994. During the development, the activity has been
reduced by 3 to 4%, showing good performance in actual supported with a research subsidy of The Ship & Ocean
sea conditions. This has promoted the ship to the prize- Foundation.
winner of the Ship of The Year in 2001 awardedby The Japan Society of Naval Architects andOrdinary bow
Ocean Engineers (former The Society of Naval
Architects of Japan).
Since then many Ax-Bow ships have been
built by the Universal Shipbuilding Corp. Although the bow has demonstrated good performance in actual use and has been appreciatedby the operators, Universal Shipbuilding Corp.
has continued the study on improving ship performance in waves for the newly developed
Leadge Bow
Ax-Bow
Leadge-Bow.
Through the study, Universal Shipbuilding
Corp. has further stepped up hull performancein waves by straightening and sharpening thebow edge between the Ax-Bow above waterline
and the bulbous bow below waterline, which
eliminates the bulbous bow in the side view. In
the model tests, this bow shape has been confirmed to give the same wave making resistance
Leadge Bow shape compared with other typical bowsin still water as the conventional hull with bulFor further information please contact:

Website: http://www.jsea.or.jp

JAPAN SHIP EXPORTERS' ASSOCIATION
15-16, Toranomon 1-chome, Minato-ku, Tokyo 105-0001 Tel: (03) 3508-9661 Fax: (03) 3508-2058 E-Mail: postmaster@jsea.or.jp

No. 318 Aug. - Sept. Page 2

Imabari completes Ro/Ro ship, HOKUREN MARU, for domestic owner
Imabari Shipbuilding Co., Ltd. hascompleted the HOKUREN MARU
(HN: 604), a 13,950GT roll-on/roll-off
cargo carrier, for a Japanese domestic owner at its Imabari Works.
The HOKUREN MARU employs
a new design developed for high-speed
vessels with a new navigation system
by Imabari based on safety and environmentally friendly concepts. The
ship is now operating between
Kushiro, Hokkaido, and Hitachi,
Ibaraki Pref.
This is the first of two sister vessels, which are replacements for predecessors. Due to the increase in carcargo transportation, the sizes haveincreased over the former vessels as
seen in the table below.
The HOKUREN MARU has four
car loading decks, and two rampway
doors (drive-through access) are suitably installed at the fore and the sternof the starboard side of “B” deck.
The chassis can load from the
rampways of “B” deck into the designated positions in the areas of “A,” “B”
and “C” decks through hinged-typeslope ways. The passenger cars canbe accommodated in the same way to“C” and to “D” decks through hinged
type and fixed type slope ways.
The car loading deck “B” is designedwith completely non-pillar construction for efficiently loading and unloading cars, and other decks also employ
the non-pillar design except the areas
around the slope ways. The non-pillar construction facilitates not onlychassis roll-on/roll-off work but also
general passenger car maneuver.
Ship maneuverability in both ports

has become easier with one bow
thruster and two stern thrusters.
These thrusters use controllable pitch
propellers and can be operated at the
starboard side of the wheelhousebridge, where the operation console
and joystick system are installed. The
joystick allows one man control of themain engine, bow, and stern thrusters.
The rudder roll stabilizer (RRS)
system, a new technology, is applied
to automatic reduction of the listing
motion caused by winds and waves
during operation. Triple measures forship motions during navigation aretaken for ensured safe transport. The
vessel has one pair of retractable fin
stabilizers and an anti-rolling tanksystem that is installed on the accommodation deck. The combined effectgives passengers and the crew comfort and restrains motions of car cargoes. Moreover, deeper bilge keels are
employed for anti-rolling.

Size comparison
HOKUREN MARU

Former ship

Length, o.a

173.3m153.6mBreadth, mld.

26.6m

21.40mDeck (Accom. Dk)

21.75m

17.35 m

12m chassis (headless)

135 units

100 units

Passenger car

64 cars

None

All crew cabins have a private roomwith a toilet and bath, and higher
ranks including senior officers have aduty room and bedroom.
The owner required higher ship
speed for maintaining a reliable service. Therefore, the main engine uses
the 8L60MC-C diesel with sufficient
propulsion power to navigate at a very
fast speed of 24 knots, which is fasterthan the same class of the conventional roll-on/roll-off cargo carrier.
To cope with such speed and fuelefficiency requirements, the vessel
uses a controllable pitch propeller anduses the PBCF system.
Onboard electricity demand is supplied by two diesel generators and themain engine shaft generator. Safe ship
operation is ensured with advanced
navigation systems including AIS,ECDIS, and GPS systems.
Principal Particulars
L (o.a.) x L (b.p.) x B x D (Acc) x d(ext): 173.3m x 162.7m x 26.6m x
21.75m x 7.14m
GT: 13,950t (JG, treating as two decks
rule)
DWT: 6,597mt at scantling draught
Main engine: KAWASAKI MAN
B&W 8L60MC-C (M-VIII) x 1 unit
MCR : 17,840 kW x 123 rpm
NCR : 15,300 kW x 117 rpm
Speed, service: abt. 24 knots (without
fin stabilizer)
Classification: NK NS*
Passengers : 12

No. 318 Aug. - Sept. Page 3

Namura completes 229,045-dwt ore carrier, GAIA CELERIS
Namura Shipbuilding Co., Ltd. hascompleted construction of the 229,045dwt ore carrier, GAIA CELERIS (HN:270), and delivered the vessel to Seaside
View Maritima S. A. on April 18, 2006.
This is the third of the series of this ship
type, the capacity of which is the largest
class among Namura’s construction
recrds.

The GAIA CELERIS has thestrengthened hull like a double hullconstruction to cope with transportof a variety of cargo ores. The vessel has five cargo holds and nine
hatches, and the cargo holds aredesigned to be suitable for cargohandling and carriage of iron ore.
Superior propulsive performance can beachieved due to a
new hull form
design developed
by Namura’s latest technology
and long experience. The main
engine is thelong-stroke, lowspeed, and fuelefficient type,which drives alarge diameter

propeller. This combination provides
the ship with increased propulsive efficiency.
Special considerations are given to
ship safety, safeguards against environmental pollution, labor saving, andeconomical ship operation. NK M0
notion is applied to automation ofmachinery in the engine room.
Principal particulars
L (o.a.) x L (b.p.)x B x D x d: 319.58m
x 308.96m x 54.00m x 24.30m x
18.10mDWT/GT: 229,045mt/113,925t
Main Engine: Mitsubishi 6UEC 85
LSII diesel x 1 unit
NCR: 22,432 kW x 76.0rpm
Speed: 17.20kt
Classification: NK (NS* “OreCarrier”,H-ARST/S/0.4L, ESP,MNS* MO)
Complement: 25
Completion: Apr. 12, 2006

3.9 million cubic ft chip carrier completed by Sanoyas
The Mizushima Works and Shipyardof Sanoyas Hishino Meisho Corporation
has completed the 3,900,000 cubic feetchip carrier, MIMOSA AFRICANA (HN:1236), for delivery to CYGNET BULKCARRIER S. A. This vessel is the second vessel of this class and has a cargohold capacity of 3.9 million cubic feet (approximately 111,000m3) developed by
Sanoyas.
This vessel is the flush decker, andthe accommodation quarters and engine
room are located aft. Six cargo holds arearranged along the ship’s centerline.
Cargo hold structure is designed andarranged for efficient loading and unloading of chips.
This vessel has a large volume forcargo holds to load wood chips whichhave low density. Therefore, this vessel
has a deeper depth than the conventionalbulk carrier of the same deadweight tonnage class.
This vessel has a 975t/h chip unloader,
and three deck cranes and four hoppers
are installed between the hatches of the
cargo holds. The main belt conveyor islaid fore-and-aft over the main deck, anda shuttle conveyor is equipped on the bow

to unload wood chips from the ship
onto a shore facility. The cargo-handling equipment is designed toachieve unloading work quickly
and safely. Hatch covers are thefolding type driven by the electrohydraulic system.
The main engine is a low-speed,
long-stroke, and two-cycle diesel
engine, which is coupled with ahighly efficient and large diameter
propeller, for improved fuel consumption. The engine room meetsthe requirements for unattended

machinery operation.
Principal particulars
L (o.a.) x L (b.p.)x B x D x d: 203.50m
x 196.00m x 37.20m x 21.60m x
10.518m
DWT/GT: 52,001mt/45,011t
Main engine: MAN B&W 6S50MC-C
diesel x 1 unit
MCR: 12,400ps
Cargo hold capacity (grain):
111,471m3 (3,936,587ft3)Classification: NK
Complement: 28
Completion: Apr. 20, 2006

No. 318 Aug. - Sept. Page 4

MES completes 177,000DWT bulk carrier, ROYAL CHORALE
Mitsui Engineering & Shipbuilding
Co., Ltd. (MES) has completed the177,000DWT Dunkerquemax Capesize bulk carrier, ROYAL CHORALE(HN: 1616), at its Chiba Works anddelivered to Lepta Shipping Co., Ltd.
of Liberia. The ROYAL CHORALE is
the 11th vessel of the Dunkerquemax
Capesize series built by MES.
The series is highly appreciated forits super wide hatch openings thatfacilitate cargo handling work. The

deadweight of 177,544 metric tons is
also ranked among the largest Capesize class. A large cargo hold capacityof 197,050m3, which is bigger thanthose of conventional Capesize bulk
carriers, is provided by efficient cargohold arrangement with nine holds andnine hatches.
The ballast tanks are divided into
topside tanks and double bottom sidetanks, thereby effective ballasting anddeballasting are achieved. It is pos-sible to exchange the ballast water
during the navigation to protect themarine environment.
The main engine is the Mitsui
MAN B&W 6S70MC type, which satisfies the IMO environmental standards of exhaust gas and achieves
massive improvement of fuel saving
by optimum matching at the normal
service output. Diesel generators alsosatisfy the IMO standards for exhaustgas.
Principal particulars
L (o.a.) x L (b.p.) x B x D x d: 289.00m
x 279.00m x 45.00m x 24.40m x
17.95mDWT/GT: 177,544t/88,491t (d =17.95m)Main engine: Mitsui MAN B&W
6S70MC diesel x 1 unit MCR:
16,860kW x 91rpm
Speed, service: 15.0kt
Complement: 25
Classification: NK
Completion: Mar. 3, 2006

Naikai completes passenger/car ferry, JINWA
Naikai Zosen Corporation completed construction of the 499GT
coasting passenger/car ferry for
Nakajima Kisen Co., Ltd. of Japan at
the Setoda Works on July 26, 2006.
The ferry will ply between Mitsuhama
Port of Matsuyama and the Nakajima
Islands, both located in the Seto Inland Sea.
The ferry is designed with the barrier-free concept to cope with the increase in the number of people of advanced age in the islands. The facilities such as passenger cabins and toilets built on the car deck are barrierfree and arranged for disabled and/or
elderly people, which complies withthe requirements of the barrier-freestandards. The cabins have a recliner
and a table and chairs, and a sofa tooffer comfortable travel.
The ferry has a very smart outward
appearance, matching the sense ofmodern life. The cabins have a large
window to fill the cabins with brightness. While the ferry has a slender hull
form for increased ship speed, large

bilge keels are used to reduce rolling.
The twin main engines, propellers,
and rudders are employed for increasing ship’s operability and maneuverability. The bow thruster is used tofacilitate berthing and unberthing
maneuver at respective ports. Vehicles can roll on and roll off the car
decks through the ramp doors at thebow and stern.
Principal particulars
L (o.a.) x L (o.a.) x B (mld.) x D x d(designed): 49.50m x 43.00m x
11.00m x 3.70m x 2.65m

GT: 462t
Car carrying capacity: 4 trucks or 18
passenger cars on the car decks
Passenger capacity: 310 passengers(within 1.5 hours or less)Complement: 6Main engines: Daihatsu 60DKM-20
x 2 units (two propellers)Engine output:
956kW x 900/255min-1
Speed, max. trial: 5.571kt
Speed, service: 14.0kt
Classification: JG, still water areas
Completion: July 26, 2006

No. 318 Aug. - Sept. Page 5

SHI-ME delivers 105,250MTDW D/H tanker to Ambrosia Shipping Inc.
Sumitomo Heavy Industries Marine & Engineering Co., Ltd. (SHIME) delivered a 105,250MTDW
double-hull Aframax tanker, AMBROSIA to Ambrosia Shipping Inc.
at the SHI-ME Yokosuka Shipyard on
June 21, 2006.
The hull form is optimized to

Koyo Dockyard Co., Ltd. of the Imabari Group delivered the OOCL
DUBAI, a 5,888TEU type container
carrier, on June 29, 2006 to Southern
Route Maritime S. A. The OOCL
DUBAI is the fourth of eight sister
carriers operated by Orient Overseas
Container Lines (OOCL), or the 22nd
container carrier of the same type built
by the Koyo Dockyard.
The OOCL DUBAI can carry
2,660TEUs in the container holds and3,228TEUs on the upper deck. The
holds can stow nine tiers (including
one tier of high cube containers) and
14 rows, and the upper deck can stackseven tiers and 16 rows of containers.
The simple hull construction isadopted for increasing container stowage space, permitting loading of 1,071
units (including 24 units in the hold)of 45ft containers and 103 units of 48ft
containers in response to increasing
container capacity.
Each hatch coaming has threehatch cover panels, and 17 sets of lashing bridges are installed on the upper
deck. A total of 586 connectors areprovided for air cooling type reefersin the holds and on the upper deck.
Moreover, the holds can carry dangerous goods including Class 1 (explosives). The ship hull strength was de-achieve high propulsive efficiency andis designed with highly reliable structures. The Sumitomo Stern System(SILD, NBS propeller and HLES Rudder) saves fuel consumption and improves maneuverability.
Cargo oil tanks and piping systems
are arranged in triple-segregationgroups for flexible cargo handling. Water ballast tanks arecoated withmodified epoxy
coating withback up anodes
for easy maintenance and inspection.
The vapor

Koyo completes
container carrier,OOCL
DUBAI for Southern
Route Maritime
signed by considering various ways forcontainer-handling operation. The
automatic heeling system is installed
to adjust any listing during cargo handling.
Fuel oil tanks are arranged below
the water line to prevent oil outflow
by collision with a tug boat or berthfenders, etc. The fuel oil overflow pipes
are arranged in the second deck passage space to avoid outflow on theupper deck. Low sulphur tanks areprovided to cope with MARPOL An-

emission control system (VECS) is
installed, complying with the US
Coast Guard requirements to prevent
air pollution during cargo handling.
For ship safety, a fixed flammable gas
detection system is provided in waterballast tanks adjacent to cargo oiltanks.
Principal particulars
L (o.a.) x L (b.p.)x B x D x d: 239.00m
x 229.00m x42.00m x 21.30m x
12.19mDWT/GT: abt. 105,250mt/abt. 56,500t
Loading capacity: 122,330m3
Main engine: DU-Sulzer 6RTA58T
diesel x 1 unit
Service Speed: 15.2kt at 12.19 draft
Complement: 23
Classification: LR
Completion: 21 June 2006
nex VI. Moreover, the stern tube air
sealing device is provided for prevention of marine oil pollution.
The crew can access the boatswain
store, steering gear room, and the container holds through the second deckpassage only.
Principal particulars
L(o.a.) x B x D x d: 280.54m x 40.00m
x 24.0m x 14.00m
DWT/GT: 66,940t/66,462
Main engine: MITSUI-MAN B&W
10K98MC (MARK VI) x 1 unit
MCR: 57,200kw x 94.0rpm
Speed, service: 25.0kt
Complement: 25
Classification: NK
Flag: Hong Kong
Completion: June 29, 2006

No. 318 Aug. - Sept. Page 6

MAERSKSHEERNESS
Owner: Mendelssohn STAR
Schifffahrtsgesellschaft mbH & Co.
KG
Builder: IHI Marine United Inc.
Hull No.: 3201
Ship type: Container Carrier
L (o.a.) x B x D x d: 335.00m x
42.80m x 24.40m x 14.00m
DWT/GT: 97,517t/ 94,724t
Main engine: DU-Sulzer 12RT-flex
96C diesel x 1 unit
Speed, service: 24.5kt
Classification: GL
Completion: May 31, 2006

IKAN SERONGIBRI LNG

Owner: Ever Rock Navigation, S. A.
Builder: Mitsui Engineering & Shipbuilding Co., Ltd.
Hull No.: 1614
Ship type: Bulk carrier
L (o.a.) x L (b. p.) x B x D x d:
189.99m x 182.00m x 32.26m x
17.90m x 12.55m
DWT/GT: 56,023t/31,247t
Main engine: Mitsui-MAN B&W
6S50MC-C diesel x 1 unit
MCR: 9,480KW x 127.0rpm
Speed, service: 14.5kt
Classification: NK
Completion: June 28, 2006

Owner: Dune LNG Carrier S. A.
Builder: Mitsubishi Heavy Industries, Ltd.
Hull No.: 2215
Ship type: LNG carrier
L (o.a.) x B x D x d: abt. 289.50m x
49.00m x 27.00m x 11.40m
DWT/GT: 71,766t/118,608t
Cargo tank capacity: abt.145,000
m3 (at -163oC, 98.5%)
Main engine: KAWASAKI UA-400
steam turbine x 1 unit
MCR: 26,900kW x 80 rpm
Speed, service: abt.19.5 kt
Classification: NK
Completion: July 14, 2006

POS LEADERDANANN ISLANDUMIAK I

Owner: White Orchid Marine S. A.
Builder: The Hakodate Dock Co.,Ltd.
Hull No: 807
Ship type: Bulk carrier
L (b. p.) x B x D x d: 167.00m x
29.40m x 13.70m x 9.56m
DWT/GT: 31,907t/19,796t
Main engine: Mitsubishi6UEC52LA diesel x 1 unit
Speed: 14.4kt
Classification: KR
Completion: July 3, 2006

Owner: Kotobuki Shipping Corporation, S. A.
Builder: Sanoyas Hishino Meisho
Corp.
Hull No.: 1238
Ship type: Bulk carrier
L (o.a.) x L (b. p.) x B x D x d:
225.00m x 217.00m x 32.26m x
19.30m x 13.995m
DWT/GT: 75,637mt/38,891t
Main engine: MAN B&W 7S50MCC diesel x 1 unit
MCR: 12,200ps
Cargo hold capacity: 89,201m3
Speed, service: abt. 14.5kt
Classification: NK
Completion: May 17, 2006

Owner: Fednav Limited
Builder: Universal Shipbuilding Corporation
Hull No: 10003
Ship type: Ice-breaking bulk carrier
L (o. a.) x B x D x d: 188.80m x
26.60m x 15.70m x 11.751m
DWT/GT: 31,992t/22,462t
Main engine: MAN B&W 7S70MEC diesel x 1 unit
Speed, service: 13.5kt
Classification: DNV
Completion: Apr. 18, 2006

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