Ships of Interest

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The Seven Borealis is Subsea 7’s world-class enabler.
Keel laid by: Nantong Yahua Shipbuilding Commpany Limited at Nantong (CHR).
Launched : 19 Oct 2009. Construction completed: 21 Feb 2012 at Singapore.
technical management by: Acergy France S.A.

This pipelay/heavy lift vessel has been designed to meet the requirements of ultra-deep and deepwater operations.
Important is the design, construction and installation of a state-of the-art 600t S-lay system and installation of a 1000t J-lay tower. The J-lay tower has been installed in Vlissingen at VDS after a few months of maintenance.



Main Crane Capacity (mt): 5,000t

Location: Main deck centreline aft

Manufacturer: Huisman Equipment BV

Dual Main Hoist, Revolving: 4,000t at 40m radius. 1,500t at 78m radius

Auxiliary Hoist (Subsea Hook): 1,200t at 70m radius, 4 falls. 600t at 103m radius, 2 falls

Operating Water Depth (m): 6,000m - single fall

Active Heave Compensation: Auxiliary hoist only

Whip Line: Single fall: 55t at all radii. Double fall: 110t at all radii

Main Crane Tugger Winches: 4 x 45t pull. Constant tension up to 22t each


Main block is splitable into two blocks/hooks to allow jacket upending

Three point lifts can be achieved using the two main blocks and the auxiliary block

Auxiliary Cranes Number: 3

Capacity and Location: 40t Dreggen knuckle boom on starboard side

40t Dreggen knuckle boom on port side

36t Huisman PMOC on port side



Berths (No.): 231 in single or double cabins or 405 in single / double / 4 x man cabins

Cabins (No.): 127

IMO: 9452787
Shiptype: Pipelayer
Shipowner: Subsea 7 Vessel co. Ltd
Agent: Gac Netherlands
LOA: 182,2
Breadth: 46.2
GT: 32240
Expected: -
Arrival: 24-04-2012 14:30
Departure: 20-08-2012 12.00
From: Vlissingen
To: Wiltonhaven Huisman