RYA Yachtmaster Ocean Theory
5 Day course: £485.00
Book today and pay your deposit of £150.00
Learn to navigate by the stars! This is a course in astro-navigation and worldwide meteorology which also reveals the mysteries of the sextant. It assumes a knowledge of all subjects covered in the other shorebased courses. The course is suited to those who wish to go ocean cruising, it will equip you with the skills needed to carry out an ocean passage either as a skipper or mate.
This course is essential preparation for a qualifying passage for the RYA Yachtmaster Ocean Examination. Once you have completed your qualifying 600 mile (minimum) passage you can take the RYA Yachtmaster Ocean Certificate of Competence Oral exam, completion of this shorebased course exempts you from the Yachtmaster Ocean written exam.
Prior to the course your navigation skills should be at the standard of the Coastal Skipper and Yachtmaster Offshore shorebased course. The course is taught over 40 hours with one exam paper.
You will be coached over the RYA Yachtmaster ocean theory syllabus by one of our experienced Ocean instructors in our waterside classroom.
- Yachtmaster Ocean course materials
- RYA Astronavigation book
- Use of sextant
- Tea and Coffee (Only courses at EASS)
Consecutive days: A non-residential course available over five days commencing on Monday at 0930h and ending approximately at 1700 Friday
Over Two Weekends: A non- residential course available over 2 weekends
- 3 day weekend: commencing on Saturday at 0930h and ending approximately at 1700 Monday
- Miss a weekend
- 2 day weekend: commencing on Saturday at 0930h and ending apprximately at 1700h Sunday
Online course - Work through the syllabus anywhere in the world online at your own pace with our distance learning option.
RYA Yachtmaster Ocean Theory Certificate.
Local Accommodation – if you need accommodation for the theory part of the course we can recommend a self-contained studio flat ‘The Sail Loft’ which is available within walking distance from the Marina where our classrooms are based. Please check availability with us.
The earth and the celestial sphere
Definition of the observer's zenith and position of a heavenly body in terms of latitude, longitude, GHA and declination
Right angle relationships, latitude and co-lat, declination and polar distance
Relationship between GHA, longitude and LHA
Tabulation of declination in nautical almanac
Rate of increase of hour angle with time
The PZX triangle
The tabulated components of the triangle, LHA, co-lat and polar distance
The calculable components, zenith distance and azimuth
Relationship between zenith distance and altitude
Introduction to the tabular method of solution in the Air Navigation Tables and the basic sight form
The use of calculators for the solution of the PZX triangle
Practical guide to the use and care of a sextant at sea
Conversion of sextant altitude to true altitude
Application of dip, index error and refraction
Correction of side error, perpendicularity, index error and collimation error.
Measurement of time
Definition of, and relationship between, UT, LMT standard time and zone time
Rating of chronometers and watches
Forecasting time of meridian altitude
Reduction of meridian altitude sights
Sun, star and other sights
Reduction and plotting of sun sights using Air Navigation Tables
Awareness of use of calculator for sight reduction
The plotting of a sun-run-sun meridian altitude
Awareness of the reduction and plotting of sights obtained from stars, moon and planets
Use of amplitude and azimuth tables systems and/or calculator
Satellite Navigation Systems
Principles and limitations of use of all systems
Great circle sailing
Comparison of rhumb lines and great circles
Vertices and composite tracks
The computation of a series of rhumb lines approximating to a great circle by use of gnomic and Mercator projections
General pressure distribution and prevailing winds over the oceans of the world
Tropical revolving storms, seasonal occurrence and forecasting by observation
Publications available to assist with planning of long passages (routeing charts, ocean passages of the world and other publications)
Preparation for ocean passage including survival equipment, victualling, water and fuel management, chafe protection, spares and maintenance
Satellite and terrestrial systems
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