Audacia   is Allseas’ versatile pipelay vessel, optimised for the execution of small- to large-diameter pipeline projects of any length in all water depths, and for associated work such as the installation of risers and subsea protection frames. The concept for Audacia   was developed entirely in-house and she has been operational since 2007.

Precise manoeuvring on full dynamic positioning

A length of 225 m places her between Allseas’ dynamically positioned pipelay vessels Solitaire   and Lorelay. Precise manoeuvring on full dynamic positioning with a stinger positioned on the bow allow Audacia  to work safely in congested areas and lay pipes in very deep water. Pipeline start-ups and lay-downs are executed in very quick time ensuring any disruption to other activities near platforms is minimised.

Highly competitive for pipelay projects worldwide

Due to her long length and ship-shape Audacia   can accommodate multiple work stations and has a greater pipe hold capacity. Her independence from anchor handlers and large buffer capacity also ensure she is less dependent on pipe off-loading from supply vessels. A high transit speed, high lay speed and large carrying capacity ensure Audacia   is highly competitive for pipelay projects anywhere in the world.

Read more about Allseas' vessels and equipment

Vessel specifications

Length overall 327 m (1073 ft) 
Length between perpendiculars 218 m (715 ft) 
Breadth 32 m (106 ft) 
Depth to main deck 19 m (63 ft) 
Operating Draught 9–10 m (30–33 ft) 
Maximum speed 16 knots 
Total installed power 39,800 kW 
Thrusters 7 x 5000 kW Wärtsilä retractable azimuth thrusters 
Dynamic positioning system LR DP (AAA), fully redundant Kongsberg SDP-22 system
Accomodation 270 persons 
Helideck Maximum take-off weight 12.8 t; suitable for Sikorsky S-92 and Bell 429 helicopters 
Deck cranes Special purpose crane of 300 t (660 kips) at 20.5 m (67 ft) main hoist
Pipe transfer crane of 30 t (66 kips) at 33 m (108 ft) main hoist  
Work stations Firing line with 7 (single joint) welding stations, 1 NDT station and 3 coating stations 
Installed tension capacity 3 x 175 t (3 x 390 kips) 
Pipe cargo capacity 12,000 t 
ROV 150 HP work-class ROV, rated to 4000 m depth (13,000 ft), for subsea surveys and intervention work 
Pipe diameters From 2" to 60" OD 
Classifications OU–100 A1–Multi-purpose support unit, pipelaying unit,
OIWS LA, LI, () LMC, DP (AAA), PCR (97, 93) 
Dual A-frame For PLEM installation and SCR handovers, capacity 550 t (1200 kips)
Buoy handling system Gantry crane above the stinger, capacity 35 t (80 kips), rail length 85 m (280 ft)
Port of registry Valletta, Malta

Audacia  projects