The RYA Yachtmaster Offshore is the qualification most yacht skippers and aspiring yacht officers hold, and it is a stepping stone to the MCA's Officer of the Watch route. This Yachtmaster Offshore guide covers the prerequisites, how the exam works, the commercial endorsement you need to work on it and where it fits in a yacht career.
Key points
- Yachtmaster Offshore is an RYA/MCA-recognised certificate of competence assessed by an RYA examiner in a practical exam afloat.
- Prerequisites include 50 days at sea, 2,500 miles and five passages of over 60 miles, plus a radio certificate and first aid.
- To work on it commercially you need the RYA commercial endorsement (with an ENG1 or ML5 medical, sea survival, radio and PPR).
- A commercially endorsed Offshore covers masters of coded vessels in categories 1 to 6 (up to 150 miles from a safe haven) and yachts under 200gt, and it is one of the accepted qualifications for the OOW (Yachts) certificate.
What is the Yachtmaster Offshore?
RYA Yachtmaster Offshore is a certificate of competence for skippers of sail or power yachts on passages of any length in moderate conditions. It is awarded after an exam with an RYA examiner, who watches you skipper a yacht for 8 to 12 hours if you are the only candidate (10 to 18 hours for two), usually spread over two days. The certificate is not a licence, it is recognition of competence, and it is accepted by the MCA when it is commercially endorsed. The IYT Master of Yachts Limited is treated as its equivalent in MSN 1858.
Yachtmaster Offshore prerequisites
The RYA exam page lists these requirements, all gained within the last 10 years, and you must be 18 at the time of the exam:
| Requirement | Minimum |
|---|---|
| Sea time | 50 days on yachts up to 500gt (25 days if you already hold an Offshore certificate in another discipline) |
| Days as skipper | 5 days as skipper on vessels under 24m LOA (3 if you hold another Offshore discipline) |
| Distance | 2,500 miles (1,250 if you hold another Offshore discipline) |
| Passages | 5 passages over 60 miles, including 2 overnight and 2 as skipper (3 including 1 overnight and 1 as skipper if you hold another discipline) |
| Radio | A GMDSS-compliant operator's certificate such as the RYA Short Range Certificate or higher |
| First aid | An RYA First Aid certificate or another valid first aid certificate |
At least half the qualifying sea time must be in tidal waters and on vessels under 24m LOA, and the sea time must be in the same discipline as the exam. Up to half the minimum can be gained on larger vessels. This matters for superyacht crew: miles on a 60m yacht with a bridge team do not give you the skippering experience the examiner wants, which is why many crew gain small-boat time at weekends or on delivery trips.
Theory
The RYA says there is no formal training course you must complete before the exam, but you are expected to know the theory to RYA Coastal Skipper/Yachtmaster Offshore shore-based level, and the examiner will test it. If you later use the certificate for the OOW (Yachts) route, MSN 1858 requires a certificate of completion of that shore-based course as well, so most candidates do it. Practical courses such as Coastal Skipper are a sensible bridge between Day Skipper and the exam.
🎧 Study on watch: Yachtmaster theory and the OOW syllabus overlap more than people expect: navigation, tides, collision regulations and meteorology. Listen on the way to the dock. Get the courses in the Audio Fastlane app →
The exam
The Offshore exam is practical. You are assessed afloat over roughly 8 to 12 hours (longer with two candidates, and often split across two days), skippering a yacht with examiner and crew aboard, planning passages, pilotage, navigation, boat handling under sail or power, anchoring, mooring, man overboard, safety and weather, and answering oral questions as you go. You will usually be expected to show good seamanship, calm decision-making and an understanding of the rules for avoiding collisions. If you are rusty on rules and lights, revisit COLREGs explained and navigation lights explained before exam week.
Commercial endorsement
To skipper a British-flagged commercial vessel covered by the MCA's small commercial vessel codes you need the RYA commercial endorsement on your certificate. The RYA lists these requirements for a new application:
- the Professional Practices and Responsibilities (PPR) course, completed before you apply;
- your original Yachtmaster Offshore certificate;
- RYA Basic Sea Survival or STCW Personal Survival Techniques;
- RYA Marine Radio SRC or another acceptable GMDSS operator's certificate;
- a current ML5 medical (or an ENG1; skippers in category 1 or 0 waters need an ENG1). The MCA will not accept an ML5 more than one year old.
An endorsement lasts up to five years. To revalidate you need at least 150 days of actual sea service on appropriate vessels in the previous five years, plus a valid medical, though the RYA may consider other relevant employment if you cannot prove the days. A restricted medical gives a restricted endorsement. Read our ENG1 medical guide first if your medical is uncertain. The Offshore certificate can also receive an STCW endorsement, which needs the four STCW basic safety elements (STCW Basic Safety training).
What the commercial Offshore allows
Under the MCA's manning tables, a commercially endorsed Yachtmaster Offshore lets you work as master of coded small commercial vessels (under 24m) in category 1 to 6 waters, which means up to 150 miles from a safe haven, and MSN 1858 lists it as the master's qualification for yachts over 24m but under 200gt within 150 miles. That covers a lot of motor and sailing yachts, charter boats and workboats under the relevant codes, but larger yachts need an MCA certificate of competency, such as a Master (Yachts) qualification.
Tips for passing
- Skipper as much as you can before the exam, not just crew. Examiners can tell the difference between someone who has done the passage plan and someone who has followed it.
- Practise anchoring, mooring and man overboard under both engine and, if relevant, sail until they are routine.
- Prepare a tidy passage plan with tidal gates, ports of refuge and clear notes on the weather, and be ready to explain every choice.
- Keep your logbook up to date and signed. You will be asked to prove your sea time before the exam.
Role in yacht careers
- Deckhand to mate: the commercial Offshore is a key qualification for mates and small-yacht captains.
- OOW route: MSN 1858 (Amendment 2) accepts a Yachtmaster Offshore with the shore-based course certificate, an IYT Master of Yachts Limited, a Yachtmaster Coastal with the Coastal Skipper practical course, or an IYT Master of Yachts Coastal/Mate as the yacht qualification for the OOW (Yachts less than 3000gt) certificate, alongside the Efficient Deck Hand, 36 months of yacht service, the ancillary courses and the two MCA written exams (Navigation and Radar; General Ship Knowledge). See becoming an OOW on yachts.
- Small-yacht captain: many skippers work for years on boats under 200gt with just the commercial Offshore.
Frequently asked questions
How many miles do I need for Yachtmaster Offshore?
The RYA asks for 2,500 miles, 50 days at sea and five passages over 60 miles within the last 10 years. The figures reduce if you hold an Offshore certificate in another discipline.
Is Yachtmaster Offshore a commercial qualification?
Only once it has the RYA commercial endorsement. Without it the certificate is recognised for leisure use.
How long does the commercial endorsement last?
Up to five years, with revalidation needing 150 days of sea service in the previous five years and a valid medical.
Do I need an ENG1 for the endorsement?
You need a valid ML5 or ENG1. Skippers working in category 1 or 0 waters need an ENG1.
Is Yachtmaster Offshore needed for OOW?
It is the usual route, but not the only one. MSN 1858 (Amendment 2, May 2026) also accepts an IYT Master of Yachts Limited, or an RYA Yachtmaster Coastal with the Coastal Skipper practical course (or IYT Master of Yachts Coastal/Mate). The earlier MIN 580 coastal route expired on 31 March 2026.
How long does it take to get?
It depends on your sea time. Courses take days or weeks, but building the qualifying miles and days usually takes months or years.
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