Working offshore on one of our vessels means that you are at the heart of the action and taking an active part in shaping the future of the offshore industry. Our offshore crew members are dedicated and determined to get the job done efficiently without losing sight of safety.

On board the vessels, our marine and construction crew work 12-hour shifts based on a schedule of five weeks on and five weeks off.

Marine crew
The marine crew comprises three main teams: nautical, technical and catering. The nautical crew is responsible for sailing the vessel; the technical crew (engineers and mechanics) maintains the installations and equipment on board such as the main engines and electrical plant; the catering crew (cooks and stewards) provides catering and cleaning related services for all crew on board.

Construction crew
The construction crew co-ordinates and executes all the preparatory work in the pipeline factory, providing the services necessary for the vessel to execute Allseas’ core business, pipeline installation. To this end, welders work together with bevel machine operators, coating operators, riggers and quality inspectors.


Specialized hardware for automatic, semiautomatic, or manual control.

MPD systems

Enable automatic, semiautomatic, or manual control with engineered software and specialized hardware.



Above-tension-ring RCD

18 3/4-in surface rotating control device that can be used for land, jackup, and platform rigs, as well as above-tension-ring floater applications.



Remotely operated annular control device

A remotely operated clamping system for improved safety in wellbore fluids containment applications.



Modular drilling choke technology

Meet advanced well control objectives in HPHT and MPD drilling environments.



High-capacity unit

Increase gas- and liquids-handling capacities and enable the immediate sale of gas during drilling operations.

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Our team of highly skilled engineers provide complete design solutions for some of the most challenging pipeline systems in the world, both in-house and by managing subcontracts with specialised
Pipeline installation Allseas has installed over 20,000 km of subsea pipeline worldwide using  S-lay technology, with diameters ranging from 2” to 48”. S-lay is characterised by
Pipeline protection In most parts of the world where oil and gas production takes place, there are many existing pipelines and cables on the seabed that must be crossed when installing a new
Subsea installation The offshore industry is experiencing a continuous move into deeper waters, more remote and hostile environments and more complex field developments. This trend presents new
Specialised pipelay operations Increasingly, oil and gas companies are prospecting and producing in areas that until recently would have been considered uneconomic or even impossible to explore.
Survey and subsea operations Allseas has a comprehensive range of vessel-based remotely operated vehicles (ROVs) and survey equipment utilising the latest high-specification sensors and equipment.
Installation Offshore installation varies with the type of development involved. Fixed platforms have the most work involved; jackets and topside decks need to be transported to the well location.
When oil and gas fields end production, their facilities need to be removed and disposed of (or recycled), a process known as “decommissioning”. Decommissioning of offshore structures is
Developing innovative new technologies and processes allows Allseas to stay ahead of the game by reducing cost and risk, while at the same time improving efficiency and operational performance.
Fabrication Our fabrication unit employs more than 200 people and provides a variety of activities in support of Allseas’ offshore operations. Custom-made subsea structures such as pipeline
Renewable energy technologies that can drive the global energy transition will require a significant increase in the production of metals, some of which are scarce or only available in a few
Working every day at sea, Allseas witnesses first-hand the devastating effect plastic pollution is having on the world’s oceans and marine life. Plastic pollution is a global problem, and we
Comprehensive oil, gas, water, and solids solutions wherever you need them Processing performance matters. Invest and derisk surface facility processing with services and solutions that
Production is about bringing a well to life and sustaining it for as long as feasibly possible. That takes soundly planned, accurately executed techniques with precision equipment to keep
Production technologies. Full service. Our integrated production chemical technologies and services provide tangible benefits and assurance to oil and gas operations worldwide, regardless of
Supporting midstream—from field separation and gathering through processing and transmission From routine maintenance and upgrades through facility design, construction, and operation,
Intervention expertise to maximize asset value Value-driven performance, superior execution. Halliburton delivers integrated well intervention through proprietary workflows, upfront