Course preview · RYA G158
Yachtmaster Offshore Theory
Advanced navigation theory for offshore passages.
- Modules
- 13
- Lessons
- 70
- Materials
- 93
- 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 chartwork6 lessons · 9 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: Chartwork tutorial — the running fix🔒
- 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)🔒
Interactive: Position Fixing
No materials listed
Interactive: Navigation In Restricted Visibility
No materials listed
Worked examples15 min
No materials listed
Practice exercises114 min
No materials listed
02 Tides, tidal heights & secondary ports9 lessons · 6 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: Calculating tidal heights at secondary ports🔒
- URLReference: Admiralty EasyTide (tide predictions)🔒
Theory & key concepts30 min
- FILERya tides slides (slides)🔒
- FILETides slides (slides)🔒
- FILEHATpresentation (slides)🔒
Interactive: Causes of tides
No materials listed
Interactive: Tide heights and chart datum
No materials listed
Interactive: Rule of twelfths
No materials listed
Interactive: Tides for a standard port
No materials listed
Interactive: The tidal curve
No materials listed
Interactive: Corrections For A Secondary Port
No materials listed
Worked examples15 min
No materials listed
Practice exercises33 min
No materials listed
03 Tidal streams & course to steer5 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)🔒
Interactive: Shaping The Course
No materials listed
Worked examples15 min
No materials listed
Practice exercises24 min
No materials listed
RYA tidal streams revision35 min
No materials listed
04 Electronic navigation: GNSS, plotters & radar7 lessons · 7 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: The five most important chart plotter settings🔒
- URLReference: Maritime & Coastguard Agency🔒
Theory & key concepts
- FILEChart Plotter Teaching Slides (slides)🔒
- FILEElectronic navigation and tools (slides)🔒
- FILEWaypoint Presentation (slides)🔒
- FILEWaypoints and routes (slides)🔒
Interactive: Radar
No materials listed
Interactive: Echo Sounder
No materials listed
Interactive: Gps
No materials listed
Worked examples15 min
No materials listed
Practice exercises84 min
No materials listed
RYA buoyage, lights and electronic navigation revision25 min
No materials listed
05 Collision regulations in depth3 lessons · 6 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: IRPCS — rules of the road🔒
- 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 examples15 min
No materials listed
Practice exercises138 min
No materials listed
06 Lights, shapes & sound signals4 lessons · 9 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: IRPCS — lights, shapes and sounds🔒
- 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)🔒
Interactive: Navigation Lights
No materials listed
Worked examples15 min
No materials listed
Practice exercises57 min
No materials listed
07 Buoyage & pilotage planning9 lessons · 9 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: The IALA maritime buoyage system🔒
- 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)🔒
Interactive: Lighted Navigation Aids
No materials listed
Interactive: Light Ranges
No materials listed
Interactive: Lists And Corrections
No materials listed
Worked examples15 min
No materials listed
Practice exercises36 min
No materials listed
RYA buoyage, lights and electronic navigation revision25 min
No materials listed
RYA passage planning and pilotage revision30 min
No materials listed
Source import audit — staff review10 min
No materials listed
08 Meteorology: synoptic charts & forecasting7 lessons · 17 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: How to read a synoptic weather chart (Met Office)🔒
- 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)🔒
Self-check exercise
- FILEYMSB - Meteorology Questions (slides)🔒
Interactive: Interpreting A Weather Fax
No materials listed
Interactive: Navtex
No materials listed
Worked examples15 min
No materials listed
Practice exercises75 min
No materials listed
RYA meteorology test papers45 min
No materials listed
09 Passage planning & strategy5 lessons · 5 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: Building a solid passage plan🔒
- URLReference: Met Office shipping forecast🔒
Theory & key concepts
- FILEPassage planning (slides)🔒
- FILEPilotage Passage Planningmt (slides)🔒
Worked examples15 min
No materials listed
Practice exercises39 min
No materials listed
RYA passage planning and pilotage revision30 min
No materials listed
Source import audit — staff review10 min
No materials listed
10 Safety, emergencies & search and rescue4 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)🔒
Self-check exercise
- FILELevel 2 - Knowledge Check (slides)🔒
Worked examples15 min
No materials listed
Practice exercises84 min
No materials listed
11 Communications & distress procedures4 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)🔒
Interactive: Signals
No materials listed
Interactive: Gmdss
No materials listed
Worked examples15 min
No materials listed
12 Yacht stability, maintenance & seamanship4 lessons · 8 items
- FILECoastal Skipper / Yachtmaster Offshore 2026 — interactive deck🔒
- URLVideo: Hydrostatics and stability explained🔒
- URLReference: RYA knowledge and advice🔒
Theory & key concepts
- FILESeamanship slides (slides)🔒
- FILEStability presentation (slides)🔒
- FILEAnchoring (slides)🔒
- FILEAnchors and mooring (slides)🔒
Self-check exercise
- FILERYA Yachtmaster Exercises in detail (slides)🔒
Worked examples15 min
No materials listed
Practice exercises24 min
No materials listed
13 Passage planning in practice3 lessons · 0 items
Build a real-time passage plan with waypoints, tides, wind and weather, then plot it in the Chart Room.
Waypoints and route30 min
No materials listed
Tides and timing30 min
No materials listed
Wind, weather and go/no-go30 min
No materials listed