Assistant Engineer
The assistant engineer is the bottom rung of the engine room on a large yacht. You do the rounds, the oil changes, the filter swaps and the cleaning. In return you learn how a superyacht's machinery actually works. Most yacht engineers without a merchant navy background start here.
The jobWhat fills the day
Most of the job is routine maintenance and support for the watchkeepers. You do the engine room rounds and record readings from the generators, watermakers, sewage plant and air conditioning chillers, and you flag anything out of range. You change filters, clean sea strainers, top up oils and help the second engineer strip and rebuild pumps. When a guest toilet blocks at midnight or a cabin AC unit stops cooling, you are often the one sent to fix it. Tender maintenance, bunkering and technical stores tend to land on you too. Expect dirty hands and plenty of time in the bilges.
With guests aboard, the job is to keep everything running without anyone noticing. Planned maintenance slows down, the engine room stays spotless and you are on call for cabins, toys and tenders. Yard periods are the opposite: long days of overhauls, watching contractors and endless cleaning. You mostly see the title on yachts over 50m with three or more engineers. On a 55m you may be the only junior and get your hands on everything. On a 100m with an ETO and six engineers, the work is narrower and more closely supervised, with a set watch rota.
Chief engineers hire for mechanical aptitude and attitude. Common backgrounds are car and plant mechanics, electricians, plumbers, HVAC technicians, ex-forces technicians, and deckhands who spent their spare time helping below. A trade qualification counts for a lot. You need STCW Basic Safety Training, an ENG1 and usually PDSD. Doing AEC 1 and AEC 2 before you apply shows you are serious, and they are the first steps on the MCA yacht engineer route. Being neat, reliable and willing to clean will get you a reference.
The MCA yacht engineer scheme runs from Y4 up to Y1. Each step needs sea time, short courses and an oral exam. Most assistants build sea time, finish AEC 1 and 2, then sit their Y4 and move up to third engineer within one to three years. Get every sea service testimonial signed and keep your discharge book up to date. Good engineers step up to second engineer once they hold Y3 or Y2. Many reach chief engineer on mid-sized yachts by their late twenties or early thirties.
Skills captains look for
- Engine room rounds and logs
- Filter and oil changes
- Basic electrical fault-finding
- Pump and plumbing repairs
- Tender and jet ski servicing
- Planned maintenance systems
- Bunkering and fluid transfers
A day aboardGuest trip, 70m motor yacht, at anchor off Sardinia
Morning rounds before guests wake. Log generator hours, temperatures and pressures, and check the watermaker output.
Breakfast in the crew mess and a quick brief from the second engineer.
Clean the AC seawater strainers and change the fuel filters on the limo tender.
Help the deck team launch the jet skis and Seabobs, then refuel and check the toys.
Lunch and a short rest in the cabin.
A guest cabin is too warm. You trace it with the second engineer to a failed fan relay on the air handler and replace it quietly while the guests are ashore.
Check the sewage treatment plant, update the planned maintenance system and wipe down the engine room.
Off watch. Dinner, the gym or sleep.
Evening rounds and tank soundings, then hand over to the duty engineer for the night.
Pay by yacht sizeMonthly, before tips. Estimates. Bars share one scale.
On charter yachts, tips are usually shared equally and can add USD 1,000 to 3,000 a month in season. Rotation is rare at this level, so expect a permanent post with 30 to 45 days' annual leave. See the Engineer salary guide for figures from live adverts.
Tickets and visas
Must have
- STCW Basic Safety Training
- ENG1 medical certificate
- PDSD
Gets you hired
- AEC 1 (Approved Engine Course)
- AEC 2
- Engine Room Watch Rating
- RYA Powerboat Level 2
- Trade qualification (mechanical, electrical or HVAC)
Visas
- US B1/B2 visa
- Schengen visa (non-EU nationals)
Where it leadsA typical career path
Engineer jobsOpen now on SuperyachtRoles.com
Questions crew ask
Do I need a trade background to get hired?
It isn't compulsory, but it is the biggest advantage you can have. Chiefs pick a qualified mechanic or electrician over someone who only has the courses. Without a trade, AEC 1 and 2 and some daywork in a Palma or Antibes yard will help.
How long until I can be a third engineer?
Usually one to three years. You need enough sea service, AEC 1 and 2, the required short courses and a pass in the MCA oral for your Y4. Moving to a busy yacht that does plenty of sea miles gets you there faster.
Is assistant engineer the same as junior engineer?
In practice, mostly yes. Both mean the most junior engineer, working under supervision. Some yachts use assistant for someone with no certificate yet and junior for someone partway to their Y4.
Can a deckhand move into the engine room?
Yes, and many do. Help the engineers whenever you can, take AEC 1, and ask the chief to sign off your engine room time. A captain who knows your work will often back a move to assistant engineer when a post opens.