Course preview · RYA G158
Yachtmaster Offshore Theory
Advanced navigation theory for offshore passages.
- Modules
- 14
- Lessons
- 36
- Materials
- 94
- Syllabus outcomes
- 7
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RYA syllabus
01 Position Fixing1 topic · 1 outcome
Advanced position fixing1
- 1.1Fixes position by multiple methods including cocked hats and running fixes
02 Course Shaping and Plotting1 topic · 1 outcome
Currents & leeway1
- 2.1Plots course to steer allowing for tide, current and leeway
03 Tidal Knowledge1 topic · 1 outcome
Complex tides1
- 3.1Calculates tidal heights and streams for secondary ports and non-standard ports
04 Lights & Buoyage1 topic · 1 outcome
Night navigation1
- 4.1Identifies lights and IALA A buoys at night with confidence
05 Passage Planning1 topic · 1 outcome
Offshore passages1
- 5.1Plans an offshore passage including contingency and safety management
06 IRPCS1 topic · 1 outcome
Advanced application1
- 6.1Applies all IRPCS rules including restricted visibility
07 Meteorology1 topic · 1 outcome
Synoptic charts1
- 7.1Interprets synoptic charts and forecasts weather at sea
Course outline & materials
Titles only — materials open once you're enrolled on the course.
01 Position fixing & advanced chartwork3 lessons · 9 items
- URLVideo: Chartwork tutorial — the running fix🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: Admiralty publications & chart corrections🔒
- FILECoastal Skipper / Yachtmaster Offshore — Exercises & Course Information🔒
Theory & key concepts30 min
- FILEChartwork slides (slides)🔒
- FILEPositioning (slides)🔒
- FILEFastnetNavigation2011🔒
Worked example60 min
- FILEPlotting a CTS 1 (slides)🔒
- FILEPlotting a CTS 2 (slides)🔒
Self-check exercise90 min
No materials listed
02 Tides, tidal heights & secondary ports3 lessons · 6 items
- URLVideo: Calculating tidal heights at secondary ports🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: Admiralty EasyTide (tide predictions)🔒
Theory & key concepts30 min
- FILERya tides slides (slides)🔒
- FILETides slides (slides)🔒
- FILEHATpresentation (slides)🔒
Worked example60 min
No materials listed
Self-check exercise90 min
No materials listed
03 Tidal streams & course to steer3 lessons · 4 items
- URLVideo: Chartwork tutorial — course to steer🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: Admiralty publications & tidal stream atlases🔒
Theory & key concepts30 min
- FILETide on nav ep cts (slides)🔒
Worked example60 min
No materials listed
Self-check exercise90 min
No materials listed
04 Tides interactive (archive)0 lessons · 0 items
All 15 interactive tides screens from the restored Shorebase courseware, with full narration — causes of tides, chart datum, rule of twelfths, tidal curves, secondary ports and tidal streams.
05 Electronic navigation: GNSS, plotters & radar3 lessons · 7 items
- URLVideo: The five most important chart plotter settings🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: Maritime & Coastguard Agency🔒
Theory & key concepts
- FILEChart Plotter Teaching Slides (slides)🔒
- FILEElectronic navigation and tools (slides)🔒
- FILEWaypoint Presentation (slides)🔒
- FILEWaypoints and routes (slides)🔒
Worked example
No materials listed
Self-check exercise
No materials listed
06 Collision regulations in depth3 lessons · 6 items
- URLVideo: IRPCS — rules of the road🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: IMO — preventing collisions at sea (COLREGs)🔒
Theory & key concepts
- FILEIRPCS (slides)🔒
- FILERules of the road (slides)🔒
- FILEIrpcs - collsion regulation - ror - rule of the road at sea - msn_1781-2 - lates-1🔒
Worked example
No materials listed
Self-check exercise
No materials listed
07 Lights, shapes & sound signals3 lessons · 9 items
- URLVideo: IRPCS — lights, shapes and sounds🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: IMO — preventing collisions at sea (COLREGs)🔒
Theory & key concepts
- FILELights & shapes slides (slides)🔒
- FILERYA lights & shapes slides (slides)🔒
- FILERYA lights & shapes slides part1 (slides)🔒
- FILESmarty board lights1 (slides)🔒
- FILESmarty board 1 (slides)🔒
- FILESmarty board 2. (slides)🔒
Worked example
No materials listed
Self-check exercise
No materials listed
08 Buoyage & pilotage planning3 lessons · 9 items
- URLVideo: The IALA maritime buoyage system🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: IALA — aids to navigation🔒
Theory & key concepts
- FILEBuoyage (slides)🔒
- FILEIALA Buoyage (slides)🔒
- FILECardinal Marks (slides)🔒
- FILESector Lights (slides)🔒
- FILEPilotage (slides)🔒
- FILEPilotage Passage Planning (slides)🔒
Worked example
No materials listed
Self-check exercise
No materials listed
09 Meteorology: synoptic charts & forecasting3 lessons · 17 items
- URLVideo: How to read a synoptic weather chart (Met Office)🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: Met Office surface pressure charts🔒
- FILECoastal Skipper / Yachtmaster Offshore — Weather Booklet🔒
Theory & key concepts
- FILEdocuments from uk met office🔒
- FILEMt meteorology slides (slides)🔒
- FILERya meteorology slides mt part1 (slides)🔒
- FILERya meteorology slides mt part2 (slides)🔒
- FILEMeteorology Slides (slides)🔒
- FILESources of weather info (slides)🔒
- FILEWeather data sources🔒
- FILEWaves🔒
- FILEWeather obs🔒
- FILEWeather routing🔒
- FILEWeather sys🔒
- FILEMet_Maps (1)🔒
Worked example
No materials listed
Self-check exercise
- FILEYMSB - Meteorology Questions (slides)🔒
10 Passage planning & strategy3 lessons · 6 items
- URLVideo: Building a solid passage plan🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: Met Office shipping forecast🔒
Theory & key concepts
- FILEPassage planning (slides)🔒
- FILEPilotage Passage Planningmt (slides)🔒
- FILEPassage planning menorca🔒
Worked example
No materials listed
Self-check exercise
No materials listed
11 Safety, emergencies & search and rescue3 lessons · 8 items
- URLVideo: How to recover a man overboard🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: Maritime & Coastguard Agency safety guidance🔒
Theory & key concepts
- FILESafety Slides (slides)🔒
- FILESea Survival-RYA (slides)🔒
- FILEDistress signals (slides)🔒
- FILESOLAS V Requirements (slides)🔒
Worked example
No materials listed
Self-check exercise
- FILELevel 2 - Knowledge Check (slides)🔒
12 Communications & distress procedures3 lessons · 5 items
- URLVideo: How to send a DSC distress alert🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: Maritime & Coastguard Agency🔒
Theory & key concepts
- FILEIntroduction and Overview fo GMDSS (slides)🔒
- FILEDistress signals (slides)🔒
Worked example
No materials listed
Self-check exercise
No materials listed
13 Yacht stability, maintenance & seamanship3 lessons · 8 items
- URLVideo: Hydrostatics and stability explained🔒
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLReference: RYA knowledge and advice🔒
Theory & key concepts
- FILESeamanship slides (slides)🔒
- FILEStability presentation (slides)🔒
- FILEAnchoring (slides)🔒
- FILEAnchors and mooring (slides)🔒
Worked example
No materials listed
Self-check exercise
- FILERYA Yachtmaster Exercises in detail (slides)🔒
14 Coastal theory interactive archive0 lessons · 0 items
Restored interactive coastal theory courseware, playable in the browser.