This certificate is a qualification that indicates that the holder has sufficient knowledge of celestial navigation to navigate a 24-metre vessel globally using a sextant and to plan, undertake and manage an ocean passage together with a comprehensive understanding of the factors involved with regards to routing and meteorology.

The course consists of six days of astronavigation and worldwide meteorology. A thorough knowledge of all subjects covered in the IYT Yachtmaster Offshore course is assumed. There will be a final written examination on the last day of the course.

The minimum age to obtain this certification is 18.

Please be aware that this certification is for recreational use only, if you are looking for a professional accreditation, please see Master Of Yacht courses.

Entry Requirements

To gain the IYT Yachtmaster Ocean certificate, candidates must first hold the IYT Yachtmaster Offshore certificate.


  • The Earth and the celestial sphere
  • The PZX triangle
  • The sextant
  • Measurement of time
  • Meridian altitudes
  • Sun sights
  • Planet sights
  • Starsight planning
  • Starsights
  • The pole star
  • Moon sights
  • Compass checking
  • Satellite navigation systems
  • Great circle sailing
  • Meteorology
  • Passage planning

Certificate Limitations

  • Command of a vessel up to 24 meters in length
  • All oceans / anywhere in the world
  • Not for commercial use

Note: Yachtmaster Ocean is a recreational course that can be taught in any language


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