The UK offshore wind industry has a problem it did not expect: it cannot find enough people who know how to work at sea.
Turbines get built, installed and maintained from vessels. Those vessels need masters, officers, engineers, DP operators and crew. The sector has grown faster than the pipeline of mariners feeding it, and it is now competing directly with conventional shipping for the same finite pool of certificated seafarers — while also needing people who understand wind farm operations, which conventional shipping does not teach.
For a merchant navy officer, that is an opportunity. The rotations are generally better, the work is closer to home, and the sector is expanding rather than contracting. But the crossover is not automatic, and the training requirements confuse people.
The vessels
Offshore wind is not one job. It is a fleet of distinct vessel types with different operating patterns.
Crew Transfer Vessels (CTVs). Small, fast catamarans taking technicians from port to turbines and back, usually daily. Short runs, home most nights, and the closest thing in the sector to a normal working life. Heavy on ship handling: pushing on to a turbine boat landing in a swell is a genuine skill.
Service Operation Vessels (SOVs). The step up. Larger vessels that stay on the field for weeks, accommodating technicians and transferring them by motion-compensated gangway. Dynamically positioned, with walk-to-work systems. Typically two or three week rotations.
Installation vessels. Jack-ups and heavy lift vessels that put the foundations and turbines in place. Specialised, high value, and the most technically demanding end.
Cable lay vessels. Installing and burying array and export cables. Precision work with its own sub-industry.
Survey vessels. Geophysical and geotechnical survey before construction, and inspection after. Overlaps heavily with hydrographic survey work.
Guard and support craft. Less glamorous, steady work.
Which roles transfer directly
Master and Officer of the Watch on CTVs and SOVs. Your Certificate of Competency transfers. What you add is sector familiarity and, for most SOV work, dynamic positioning.
Engineering officers. Marine engineering competence transfers straight across. SOVs and installation vessels need engineers and the shortage is acute.
DP operators. This is the highest-value crossover. SOVs, cable lay and installation vessels are dynamically positioned, and certified DP operators are scarce across the whole offshore sector. If you are planning the move and want one thing to invest in, this is usually it — see our guide to becoming a DP operator.
Electro-Technical Officers. Offshore wind vessels are electrically complex. ETOs are in demand.
Marine coordinators and marine managers ashore. Planning vessel movements, managing weather windows, coordinating marine operations from an operations centre. A natural landing place for officers who want to stop sailing, and one of the fastest-growing shore roles in the sector.
The training you need to add
Your STCW certification still applies. The vessels are vessels. STCW Basic Safety Training and your certificates of competency remain the foundation.
GWO is additional, and different. The Global Wind Organisation standards cover working on the turbine itself — working at height, manual handling, fire awareness, first aid, sea survival. If your role involves transferring on to a turbine, you need GWO Basic Safety Training. If you remain aboard the vessel, you may not.
The two systems are not interchangeable, and the overlap is partial and much misunderstood. Our comparison of GWO and STCW requirements sets out which applies to which role.
Dynamic Positioning. For SOV, cable lay and installation work. A structured scheme of courses plus logged DP sea time.
Company and site inductions. Every operator and every wind farm has its own, and they are not transferable.
How the rotations compare
Deep sea shipping typically means four to six months aboard, often on the other side of the world, with limited connectivity and no realistic way home mid-contract.
Offshore wind CTV work is frequently day work from a home port. SOV work is commonly two or three weeks on, the same off, in UK waters, with a crew change you can plan around. For anyone with a family, that difference is the whole argument.
The trade-offs are real too. The work is weather-dependent and frustrating when you are waiting out a swell. The vessels are smaller than deep sea tonnage. And some officers find wind farm operations repetitive compared with ocean passages.
What it pays
Competitive with conventional shipping and, for scarce roles, better. DP-certified officers and experienced SOV masters command a premium precisely because the shortage is real.
Rather than quote figures that date, look at current advertised positions through offshore recruitment agencies and the published guidance from Nautilus International. The pattern worth noting is that the premium attaches to specific scarce competencies — DP, high-voltage, SOV command — rather than to the sector in general.
Where the UK sector is heading
Capacity targets. UK and Scottish government targets imply a substantial build-out through the 2030s, and every gigawatt installed adds decades of maintenance work after construction ends.
Floating wind. Moving into deeper water changes the vessel requirements substantially — more towing, more mooring work, more complex marine operations. This is the next skills gap.
Operations and maintenance growth. Construction is cyclical; maintenance is permanent. As the installed base ages, the O&M fleet grows steadily, and O&M is where the stable, long-term marine jobs are.
An ageing workforce. The existing pool of experienced mariners is retiring faster than it is being replaced, across both shipping and offshore.
Industry skills bodies and the Scottish Government’s offshore wind skills work have both identified marine competence as a constraint on delivery, not a nice-to-have.
Making the move
Audit what you already hold. Your CoC, STCW certificates, ENG1, and any DP or high-voltage endorsements. Most officers are closer than they assume.
Identify the gap, not the whole syllabus. If you want SOV work, the gap is usually DP. If you want to transfer to turbines, it is GWO. Do not buy a stack of courses you do not need.
Target the vessel type, not “offshore wind”. CTV, SOV and installation work are different jobs with different lives. Applying generically marks you as someone who has not done the homework.
Talk to crewing agencies that specialise in offshore renewables. They know which operators are short of what, and the information is free.
How Navalis UK fits
The certificates — STCW, GWO, DP — come from approved physical training centres, not from us.
Where online study earns its place is the understanding of the sector that the certificates do not cover: how a wind farm is actually operated, how marine coordination and weather windows work, the regulatory and environmental framework, and the commercial structure of offshore renewables. That knowledge is what moves someone from “a mariner working in wind” to “a marine professional in the renewables industry”, and it is what the shore-side coordinator and manager roles are recruited on.
Our renewable energies and efficiency and maritime safety and survival programmes are the usual fits, with logistics and fleet management for those aiming at the coordination side.
Recognition depends on which programme you complete and on the regulations of the country where you intend to work, and we set that out in writing before you enrol — see recognition and accreditations.
Frequently asked questions
Does my merchant navy CoC work in offshore wind?
Yes. The vessels are commercial vessels and your certificate of competency applies. You will usually need to add sector-specific training.
Do I need GWO if I have STCW?
Only if your role involves going on to the turbine. GWO covers work at height and turbine-specific hazards; STCW covers the vessel. They are complementary, not alternatives.
Is dynamic positioning essential?
Not for CTV work. For SOV, cable lay and installation work it generally is, and it is the single most valuable certificate to add.
What are the rotations really like?
CTVs are often day work from a home port. SOVs commonly run two or three weeks on, the same off. Both are substantially better than deep sea rotations for anyone with family commitments.
Is the work seasonal?
Construction activity is weather-dependent and busier in summer. Operations and maintenance runs year-round, which is why O&M roles are the more stable ones.
Can I move without any seagoing background?
Into turbine technician roles, yes — that route runs through GWO and electrical or mechanical training. Into vessel roles, no; those need maritime certification.
The next step
If you are a certificated officer, you are closer to this sector than you think. Work out which vessel type you want, find the one certificate gap, and close it.
Then build the sector knowledge that separates a candidate from a CV. Browse our programmes by level and field, or ask an adviser which fits what you already hold.