Jobs on Offshore Vessels

A Complete Guide to Roles, Disciplines, and What It Really Takes to Work at Sea

Offshore vessels are among the most complex and demanding working environments in the world. They are simultaneously construction sites, engineering facilities, navigation platforms, and temporary homes – operating around the clock in some of the harshest conditions on earth. The people who crew and operate them are a distinct breed: technically skilled, adaptable, safety-conscious, and comfortable with the particular rhythms of life on rotation.

Whether you are considering a career on offshore vessels, looking to move between disciplines, or an employer building out a project crew, this guide covers the full range of roles across maritime, dredging, subsea, and construction vessel operations – and explains what WRS does to connect the right people with the right projects globally.

Why Offshore Vessel Roles Are a Career Unlike Any Other

Jobs on offshore vessels are not simply jobs at sea. They sit at the intersection of some of the most capital-intensive, technically complex, and strategically important industries in the global economy – oil and gas production, offshore wind installation, subsea infrastructure, and marine civil engineering, including dredging and port construction.

Every person on board has a defined function in a tightly coordinated system. Remove a link, and the whole chain is affected. A delayed installation vessel costs operators hundreds of thousands of pounds per day. A missed maintenance window on a subsea asset can have safety and environmental consequences that extend far beyond the vessel itself. This is why offshore employers consistently prioritise experience, certification, and proven reliability over almost everything else when hiring.

For candidates, that same dynamic creates real long-term value. Professionals who build genuine expertise in offshore vessel operations – whether in navigation, engineering, subsea intervention, dredging, or marine construction – enter a talent market that remains consistently undersupplied relative to global project demand.

Maritime Crew Roles

Maritime crew are the professionals who keep an offshore vessel moving, positioned, and operating safely within international regulatory frameworks. Their qualifications are governed by the STCW Convention, and their experience translates across vessel types and geographies in a way that few other professions allow.

Master (Captain): Overall command of the vessel, responsible for the safety of crew, cargo, and operations. The Master is the final authority on all matters relating to vessel safety.

Chief Officer: Responsible for deck operations, cargo management, stability calculations, and maintenance of the ship’s certificates and safety equipment.

2nd Officer / DPO (Dynamic Positioning Officer): Manages navigation watch and operates the vessel’s dynamic positioning system – critical for maintaining precise station-keeping during offshore operations.

Chief Engineer: Responsible for all engineering operations onboard, including propulsion, power generation, and maintenance of all machinery systems.

2nd Engineer: Supports the Chief Engineer in engine room management and takes charge of specific machinery maintenance programmes.

ETO (Electro-Technical Officer): Maintains and repairs all electrical, electronic, and control systems, including DP systems, navigation aids, and communications equipment.

Able Seafarer (AB): Assists with deck operations, mooring, anchoring, watchkeeping, and navigation – the backbone of the deck crew.

Motorman: Supports the engineering team with engine room maintenance, watchkeeping, and machinery operations.

Crane Operator: Handles all lifting operations on deck – a safety-critical role requiring specific certification and a strong record in lift planning and execution.

Offshore Management and Administration

Behind every productive day on an offshore vessel is a management and administration team keeping operations coordinated, compliant, and safe. These roles are often underappreciated by those outside the industry, but their influence on project outcomes is significant.

Offshore Manager: Leads overall project execution offshore, interfacing between the vessel, client, and onshore management. Accountable for delivery, safety, and commercial performance.

Shift Supervisor: Manages crew rotations, workflow scheduling, and day-to-day operational continuity – essential for maintaining productivity across 24-hour operations.

Radio Operator: Manages all vessel communication systems, including distress communications, weather monitoring, and coordination with shore-based teams and other vessels.

Vessel Worksite Admin: Coordinates documentation, logistics, manifests, and administrative support for the vessel and project teams.

HSE Officer (Health, Safety and Environment): Ensures operations comply with safety regulations, conducts risk assessments, leads toolbox talks, and maintains the safety management system.

Medic: Provides primary healthcare, emergency first response, and occupational health support for the entire vessel crew throughout the rotation.

Deck and Construction Crew

On construction and installation vessels, the deck and construction crew are where the physical work of offshore engineering happens. These are highly skilled tradespeople and technicians, often working with heavy equipment in demanding conditions, where precision and safety discipline are non-negotiable.

Lifting Supervisor
Deck Foreman
Rigger
Welder
Mechanic
Electrician
Lay Tech / VLS Tech (pipeline and cable laying systems)
Winch Operator
Crane Engineer

Subsea Project Crew

Subsea operations sit at the most technically demanding end of offshore work. Whether conducting geotechnical surveys, installing subsea structures, or operating remotely operated vehicles at depth, these professionals require specialist training and equipment that takes years to develop. Demand for experienced subsea talent consistently outpaces supply across global markets.

Geotechnical Engineer: Analyses seabed conditions to inform foundation design and installation planning for offshore structures.

CPT Operator: Conducts cone penetration testing to measure soil strength and stratigraphy at the seabed.

ROV Supervisor: Leads remotely operated vehicle operations, responsible for mission planning, crew management, and operational safety.

ROV Pilot: Operates subsea robots for inspection, intervention, construction support, and survey tasks at depth.

ROV Tooling Technician: Maintains, repairs, and configures the tooling and manipulator systems used by ROVs during subsea operations.

Survey Party Chief: Leads the offshore survey team, overseeing data quality, equipment deployment, and client deliverables.

Online Surveyor: Monitors real-time survey data during operations, ensuring positional accuracy and flagging anomalies.

Data Processor: Processes and quality-controls survey and geophysical datasets for client reporting and project records.

Survey Engineer: Maintains and calibrates survey instrumentation, ensuring systems are operating within required tolerances.

Seismic Navigator: Guides seismic survey vessels along precise acquisition lines while coordinating with the seismic crew.

Node Technician: Handles the deployment, retrieval, and maintenance of seabed seismic nodes for ocean-bottom seismic surveys.

Dredging and Port Construction Crew

Dredging and port construction is one of the most specialised and globally active areas of offshore marine work. From harbour deepening and land reclamation to coastal defence and subsea trenching, these projects underpin critical infrastructure that enables international trade, energy distribution, and coastal protection.

WRS has deep experience recruiting across the full spectrum of dredging disciplines – from cutter suction dredgers (CSDs) and trailing suction hopper dredgers (TSHDs) to barge operations and port development projects. We work with leading contractors, port authorities, EPC firms, and marine developers on projects across Europe, Asia-Pacific, the Middle East, and beyond.

Vessel and Engineering

Engine Room Officers
Electrical Technical Officers
Cutter Engineers / Skippers
Dredge Engineers
Chief Engineers

Operations and Deck

Barge Masters / Superintendents
Pipe Operators
Levermen
Bull / Wheel / Dozer Operators
Excavator Operators
Crane Operators

Deck and Support

Mates
Deckhands
Ratings
Welders
Oilers
Scowmen

Shore and Specialist

Fill Placers
Shoremen
Survey Rodmen
Dredging Representatives
Operations Managers

Leadership and Project

Project Managers
HSE Coordinators
Superintendents

Offshore Marine Crew by Vessel Department

Across the full range of offshore vessel types – from platform supply vessels and anchor handlers to accommodation barges and dive support vessels – crew are typically organised by department. Here is how those structures break down across the key vessel disciplines WRS recruits for:

Bridge Crew

Captain / Master
Chief Officer / SDPO
1st Officer / SDPO
2nd Officer / DPO

Engineering Crew

Chief Engineer
2nd Engineer / 1st Assistant Engineer
3rd Engineer / 2nd Assistant Engineer
Motorman

Electrical Crew

Electro Technical Officer (ETO)
HV Electrician
Electrician

Deck Crew

Bosun
AB / Crane Operator
Deckhand

Catering and Housekeeping

Camp Boss / Catering Supervisor
Chief Steward
Steward
Chief Cook
Baker
Cleaner

Offshore Marine Operations WRS Supports

WRS recruits across all major offshore vessel operation types. Our clients include contractors, operators, vessel owners, and project developers across the following disciplines:

Catering and Housekeeping Crew

Offshore life is demanding. Rotations of 28 days on and 28 days off – or longer – in isolated environments mean that quality of life onboard is not a nice-to-have but a genuine operational consideration. Catering and housekeeping crews play a direct role in crew welfare, morale, and the ability of technical staff to perform at their best.

Camp Boss (manages all catering and accommodation services)
Chef / Chief Cook
Baker
Chief Steward / Steward
Cleaner
Laundry Staff

What Clients and Candidates Say About WRS

“Big thanks to WRS for getting me on board the Seven Falcon (Subsea7). They answered all my questions, gave me all the info I needed, and made the whole process super easy. Really great team and I would definitely recommend for anyone working offshore.”

Yevgen Kucher, AB Crane Operator, Subsea 7

“WRS standards are exemplary. We have hired their services in the Middle East, Europe and Africa. I was never disappointed. They are a company of great people.”

Adel Henniche, General Manager E&P, Benchmark Energy International

“For nearly 6 years, we have successfully worked with WRS – supplying manpower for offshore wind installations, dredging, and cable laying projects.”

Van Oord Personeels B.V

“WRS have been a tried and tested supplier of professional and technical personnel to Genel Energy both in Kurdistan Region of Iraq and the UK for over 2 years and we value their expertise and support.”

Simon Gerrard, Recruitment Partner, Genel Energy

Work With WRS for Offshore Vessel Recruitment

WRS is a specialist global recruitment partner for the offshore and maritime sector. With five international offices and a network of experienced consultants who understand offshore operations from the inside, we connect skilled professionals with the right projects and connect employers with talent that is genuinely ready to perform.

For employers, we provide rapid, compliant staffing across contract and permanent requirements, with full support for mobilisation, certification verification, payroll, and international assignment management. For candidates, we offer access to a global project portfolio, honest guidance on market conditions, and a recruitment process that treats offshore professionals with the respect their experience deserves.

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