Feature 4
Shape of cranes to come
On delivery, in March 2010, the crane vessel Borealis will feature the largest
shipboard single mast crane ever to have been built.
N
ordic Heavy Lift subsidiary
Avonway, registered in Cyprus,
ordered a unique US$221
million, 13,500dwt crane vessel last year,
with a record 5000tonne Huisman-Itrec
single mast lifting capacity to be fitted
aboard the vessel. Due to be delivered
through Singapore’s Sembawang Shipyard
in March 2010, an option exists for a
second, identical ship.
The ‘SOC 5000’ crane vessel, to
be named Borealis, will be capable
of supporting the construction and
maintenance of offshore surface and
subsea oil and gas developments
worldwide.
Overall concept and basic design for
the DNV-classed, monohull vessel have
come from Sea of Solutions (now part
of Ulstein Group). The design has many
innovations but, according to Huisman- Borealis will feature the largest shipboard single single mast ever installed.
Itrec, what will catch the eye will be the
enormous single mast crane, reaching
approximately 150m above the deck when topped up. To date, the largest
shipboard crane specified has been for
Sapura 3000, commanding 3000tonne
Technical parTicularS lift capacity. This, too, has been a
Borealis combined Sea of Solutions/Huisman
length, oa .........................................180.9m project.
length, bp .........................................170.1m To d a y ’s d e e p w a t e r o i l f i e l d
Beam ....................................................46.2m construction projects demand high
Depth (moulded) ...............................16.1m transit speeds and good DP capabilities Design drawing the SOC 5000 crane vessel
Draught (operational) ..................... 6m-9m when on station. Where the current Borealis.
Main deck area ................................5500m
2
crop of heavylift achieve no more than
Main azimuthing thrusters ......... 2 x 5500kW around 7knots, the SOC 5000’s hullform
retracting azimuthing has been optimised for higher transit to 600tonnes at 3000m water depths
thrusters ..................................... 3 x 3000kW speeds of up to around 14knots, in including heave compensation.
Tunnel thrusters........................... 2 x 2000kW order to ensure short mobilisation times Furthermore, the vessel will feature a
Speed
..........................................ca 14knots and thus maximise revenue earning large deck area of around 5500m
2
for the
potential. Borealis will be driven by two storage of modules handled and will be
5000tonne Heavylift Mast Crane propulsion thrusters of 5.5MW each. pre-prepared for the later installation of
capacity over the stern......5000mt at 34m Main thrusters, when combined with S-lay pipelaying equipment.
capacity revolving .............4000mt at 41m four 3.2MW retractable thrusters and The build contract will see a Chinese-
Mast height ............................................82m 2.5MW bow thrusters, will give the supplied hull, with 3D modelling,
Total boom length ...............................120m vessel DP3 class. Provision for a future outf itting, and commissioning
Max radius main hoist ...........................79m eight-point mooring system is also being undertaken by Sembawang in Singapore,
Max radius aux hoist ............................109m built into the design. to deliver a vessel able to accommodation
Max radius whip hoist ..........................122m The SOC 5000 will also be able to 220-400 crew. The crane itself is being
handle large subsea modules of up supplied through the owner. NA
The Naval Architect February 2008 93
NA Feb 08 -
p93.indd 93 05/02/2008 09:54:24
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