RYA Yachtmaster Ocean course 


This course is for those aspiring to blue water cruising and is ideal for holders of the Yachtmaster Offshore certificate who are preparing for their first ocean passage.  It is the highest level of training provided within our RYA program, and highly respected for commercial positions on board of yachts.







Course content

  • The earth and the celestial sphere
  • Practical guide to use and care of sextant at sea
  • Meridian altitudes
  • Sun, star and other sights
  • Ocean passage planning

The course is taught over 40 hours with one exam paper. It can be covered as a series of weekend sessions, or as an intensive week-long course.


Ability after the course

The training on astronavigation will make your sextant your best friend, and allow you to confidently take sights at sea to obtain your position and carry out compass checks. In addition you'll have a better insight in worldwide meteorology, passage planning and communications for long voyages at sea. Combined with sessions on crew management, watch keeping, victualling, water and fuel management and emergency equipment, this will give you a great knowledge base for putting the theory into practice on an ocean voyage.


What's included

  • All course materials
  • Sandwich lunch and coffee/tea
  • Free parking at our premises
  • RYA Ocean certificate when successfully passing the exam


Supporting courses

We recommend the C-MASTERS practical celestial navigation course for exercising taking sights and position fixing with a sextant at sea.


Supporting books

Books to further enrich your knowledge on ocean passages are RYA Offshore sailing, the RYA Meteorology handbook and the RYA Sea Survival handbook



Details of this course

Duration :  5 consecutive days or 2 weekends



  • Kats, the Netherlands
  • Brussels, Belgium


Previous experience: Coastal or offshore sailing


Assumed knowledge: Knowledge of navigation at level of RYA Yachtmaster Shorebased


Number of students: 6


Minimum age:  18 years


Cost: 1075 Euro


Course dates :

  • 5 day course on 13 to 17 November
  • Please enquire for alternative course dates








I loved it and it fully exceeded my expectations


 Having an instructor that loves the topic is half way the success. My expectations for this course were high. The instructor was able to exceed them. I'm happy with the outcome and this course made me even more enthousiastic about celestial navigation


-- Pedro --




Overview of all our RYA shorebased courses



RYA Essential navigation


Shorebased course for beginning crew members, providing essential knowledge on navigation and seamanship on board

RYA Day Skipper

l1050134Intermediate shorebased course for competent crew members and beginning skippers, which lays the foundation for safe navigation and seamanship. Recommended for all sailors on tidal and non-tidal waters


RYA Coastal Skipper / Yachtmaster

zee-5Advanced shorebased course for skippers of sailing and motor vessels, preparing them for long (day and night) coastal and offshore passages, with lots of emphasis on passage planning, safety and navigation skills

RYA Yachtmaster Ocean

img-5852Worldwide weather systems, celestial navigation and preparation of ocean passages, for those eager to cross the ocean and for professional skippers

RYA Radar course

radar-imageShorebased course on the use of radar systems, teaching you how to properly set up the radar system, use it for navigation purposes and to avoid collisions


RYA Diesel Engine course

d2-60-diesel-motorLearn the functionality of a diesel engine, and how to maintain and repair it.

Short Range Certificate


One day course for obtaining your VHF GMDSS marine radio certificate


or do you prefer an online course ?



Study a selection of RYA course at your own pace from your own seat









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 C-MASTERS Training Centre Zeeland

               Veerhaven 3

               4485 PL   Kats

               The Netherlands



 C-MASTERS Training Belgian Coast


               6820   Nieuwpoort





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