SEA JACKTechnical specifications
GeneralVessel SEA JACKType of vessel Self-elevating platformClassification Germanischer LloydFlag Danish
Technical DimensionsLength 91.20 mBreadth 33.00 mDraft 5.5 mLeg length 50.4 mDeck load 20 t/m2
Free deck space 2500 m2 (subject to deck layout)Total net deck load 1500 - 2500 t (depending on stability)Operating water depth 6 - 30 m (depending on tide, penetration)
Jack-leg systemNo. of legs 4Jacking system WireJacking engines 8 x DEUTZ BF 8 M 1015MC, each 400 kW Jacking speed 0.8 m/min – 1.0 m/minSpudcan footprint 64 m2 Wave limit jacking Approx. 1.5 m Hs (subject to site specific assessment)
Main CraneType Manitowoc M1200 RingerMain boom length 42 - 115 mCrane capacity 800 t (subject to boom configuration)
Mooring & anchor systemWinches 4 x 30 t line pull, hydraulic drivenWire lengths 900 mAnchors 4 x 10 t Tank CapacityFuel 200 m3
Fresh water 84 m3
Sewage tanks 60 m3
Power SourcesMain generatos 2 x 350 kVA, 1 x 125 kVAMain power supply 3 x 380 V, 50 Hz, 3 x 220 V, 50 Hz
Charterers’ Accommodation Charterers’ personnel 23 personsCharterers’ cabins 23 cabinsOffice facility 1 office with 2 work desks and 1 meeting table for 6 personsOther facilities Rest lounge (shared with vessel crew) Mess room (shared with vessel crew) Gym facilities (shared with vessel crew)
Purpose built for the offshore
wind market, SEA JACK is cur-
rently the largest and most
capable barge in the A2SEA fleet.
The large crane on board gives
SEA JACK an unrivalled lifting
capability in the offshore wind
market making the barge suitable
for installation of heavy founda-
tions and large turbines. The
considerable available deck area
means installation of bulky units
such as offshore accommodation
blocks is also possible.
With full jack-up capability, SEA
JACK can operate in areas with
high tidal ranges. A2SEA has
completed the design for a leg
extension for SEA JACK making
A2SEA ready to start the exten-
sion subject to a project specific
opportunity and subsequently
increase the capability to even
deeper waters.
SEA JACK has been updated to
have 23 single cabins (all with en
suite bathrooms) for charterers
personnel.
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