Arctic technology: Winterisation of FPSO 38 Cruise ... - Ship & Offshore

SHIPBUILDING & EQUIPMENT | CRUISE & FERRIES
Luxury cruise ferry
for the Mediterranean
DSME | Korean shipyard Daewoo
Shipbuilding & Marine
Engineering Co., Ltd. (DSME)
recently signed a contract with
Tunisian company, CTN (CO-
TUNAV; Compagnie Tunisienne
de Navigation), for a luxury
cruise ferry which will be
delivered in May 2012. With
51,000 gt, a length of 210m
and breadth of 30m, this will
be one of the largest cruise ferries
in operation worldwide.
The Tunisian-fl agged vessel
will be able to transport
3,200 passengers, 285 crew
members and a minimum of
1,060 cars (or 91 trailers with
353 cars) on 12 decks on short
international voyages operating
in the Mediterranean. The
newbuilding will reinforce
COTUNAV’s existing main
routes between Tunisia, Italy
and France.
Propulsion system
Four common-rail 12V48/60CR
Tier-II propulsion engines have
been ordered as prime movers
from MAN Diesel & Turbo
SE which have an output of
14,400 kW each, providing a
service speed of 27.5 knots. The
48/60CR injection system is
said to use the latest commonrail
technology that allows independent
setting of injection
timing, duration and pressure
for each cylinder.
The twin-screw RoPax ferry
will be driven by two CP propellers
of the type VBS1800-
ODF, with a propeller diameter
of 5,600mm and a
power density corresponding
to 1,169 kW/m 2 . Each propeller
is pow erded by two of the
12V48/60CR main engines
over a twin-in/single-out gearbox.
The fi nal propeller-blade
design has been hydrodynamically
optimised with a special
focus on propulsion effi ciency,
low noise, and minimised cavitation
levels.
The ferry is designed with two
separate engine rooms with the
30 Ship & Offshore | 2011 | N o 1
Illustration of COTUNAV’s new RoPax ferry to be built by DSME
Photo: MAN Diesel & Turbo
propeller shaft lines having different
lengths of well over 40m.
For the electrical supply on
board, four 2,895kW MAN
B&W 6L32/40 alternator sets
will be installed. Two of them
will be used for normal operation.
One alternator set will be
used for manoeuvring with
two bow thrusters at a port,
whereas the fourth alternator
set functions as standby. In addition,
a pair of fi n stabilisers
and fl ap rudders controls both
rolling and directions of the
vessel.
Cargo decks
Four decks (deck 3 to deck 6)
including lower garage and
hoistable decks are used for
cars and trailers, which can
be loaded through one bow
ramp/door and two stern
ramps on deck 4. Two fi xed
ramps which are normally
fl ush with deck 4 and sealed
off with a watertight cover during
seagoing condition link a
lower garage deck to deck 4.
Additionally, hoistable decks/
ramps and two tiltable ramps
give access to hoistable decks
on deck 5 and the car garage
on deck 6. In a seagoing condition,
mechanical ventilation
will provide ten air changes/
hour, and while in port, 30
air changes/hour are possible.
A drencher fi re extinguishing
system serves all cargo spaces.
Safety regulations
The vessel including hull, machinery,
equipment and outfi
ts will be constructed under
the survey of Bureau Veritas.
It conforms to the latest safety
and environmental rules and
regulations including Safe Return
To Port (SRTP), SOLAS
2009 stability, MLC2006 (Marine
Labour Convention, New
ILO), and the IMO’s Tier-II
NOx emissions requirement. It
is said to be the fi rst vessel designed
to satisfy the latest SRTP
requirements based on the
MSC.1/Circ.1369 (SRTP explanatory
notes). Propulsion,
electric, control and navigation
systems are located in separated
rooms to allow the vessel to
be able to return to the closest
port safely even in the case of
fi re or fl ooding occurring in
any single compartment. For
further passenger and crew
safety assurance, all accommodation
and public spaces have
been designed with “Safe Areas”,
which provide refuge and
basic services such as air conditioning,
potable water, food,
lighting, and sanitation.
The vessel’s lifesaving facilities
include eight 150-person
lifeboats and four 632-person
MES (marine evacuation
systems) for 3,485 people on
board. With respect to designing
an optimised passenger
evacuation design for this vessel,
DSME utilised its proprietary
software, DAEP (DSME
Advanced Evacuation Programme),
to analyse the most
practical evacuation routes
based on passengers’ typical
physical characteristics , behaviours
and ship motions.
Besides safety aspects, the design
and outfi tting of the newbuilding
have been focused
on environmental protection.
Among other measures, a ballast
water treatment system will
be installed on board.
Accommodation and
passenger service
Just above the ro-ro space
decks, 678 passenger cabins
with 30 suites are located on
deck 7 and deck 8. On deck 9
to deck 11, there are passenger
public spaces of 11,000m 2 . A
delicate balance of traditional
Tunisian characteristics combined
with modern design features
will be the theme of the
interior design. A shopping
centre, children’s playroom,
restaurant, seating lounge,
swimming pool, mosque, night
club and an Internet café will
be included as well. 161 crew
cabins and crew public spaces
are located on an uppermost
deck 11 for better services for
passengers. Passengers can access
the main hall with an information
desk, through both
shell doors on deck 7, and two
escalators linking deck 4 and
deck 7 also give access to the
main hall. Additionally, the
installation of two passenger
elevators and three crew elevators
is planned.