Trust and corrections
Editorial policy
Coastal Skipper Theory publishes independent revision material designed to help learners understand and practice sailing theory. It does not issue RYA certificates, reproduce official assessments or replace current publications, recognised training or practical judgement.
How material is prepared
Course scope begins with the relevant official course description. Safety, regulatory, weather and navigation claims are then checked against the appropriate regulator, standards body or public-safety source. Examples and questions are written for independent practice, with keyed answers and explanations locked to dated review records.
Review and update cadence
Safety-sensitive and changeable material is scheduled for review at least every six months and when an authority changes its guidance. Stable concepts are reviewed annually. Dates change only after a substantive review; deployments do not create artificial freshness.
Use of AI and automated checks
AI may assist with organisation, drafting suggestions and mechanical quality checks, but it is not accepted as a factual source. Automated tests detect changed reviewed content, contradictory answer keys, broken links and unsupported claims. Safety-sensitive publication still requires deliberate owner review against the cited source.
Journey guidance and commercial independence
Qualification and charter guidance is produced by deterministic, versioned rules rather than runtime AI. Claims are classified as law, training or operator policy, insurer policy, or Compass recommendation and linked to dated sources. Overdue rules lose definitive wording and tell the reader to confirm with the responsible training organisation or operator. Training partner payment, plan, sponsorship, commission, seat sales, or affiliate status never changes an organic result or editorial conclusion; any commercial block is separate and labelled.
Source hierarchy
Official course information defines scope. Regulators and recognised standards bodies take precedence for rules and safety. Public-safety services support weather, environmental and operational context. Secondary explanations never override a current primary source.
- RYA Day Skipper Theory Course
Royal Yachting Association
- RYA Day Skipper Practical Sailing course
Royal Yachting Association
- RYA Knots, Splices and Ropework Handbook
Royal Yachting Association
- Passage planning
Royal Yachting Association
- SOLAS Chapter V for pleasure vessels
Royal Yachting Association
- Resolution A.893(21): Guidelines for voyage planning
International Maritime Organization
- MSN 1781 (M+F) Amendment 3: COLREGs
Maritime and Coastguard Agency
- MGN 369 (M+F) Amendment 1: navigation practices in restricted visibility
Maritime and Coastguard Agency
- MGN 592 (M+F) Amendment 2: anchoring, mooring, towing or hauling equipment
Maritime and Coastguard Agency
- Code of Safe Working Practices for Merchant Seafarers 2026
Maritime and Coastguard Agency
- Safety Bulletin 2: dangerously weighted ships' heaving lines
Maritime and Coastguard Agency
- A reminder about mooring deck safety
Marine Accident Investigation Branch
- Rope care, inspection, retirement and termination guidance
Marlow Ropes
- Rope material properties
Marlow Ropes
- MGN 324 (M+F) Amendment 2: safe use of VHF radio and AIS
Maritime and Coastguard Agency
- MGN 364 (M+F) Amendment 2: traffic separation schemes and Rule 10
Maritime and Coastguard Agency
- Convention on the International Regulations for Preventing Collisions at Sea
International Maritime Organization
- MGN 610 (M+F) Amendment 1: navigation and SOLAS Chapter V
Maritime and Coastguard Agency
- MGN 379 (M+F) Amendment 1: use of electronic navigational aids
Maritime and Coastguard Agency
- MGN 599 (M) Amendment 1: pleasure-vessel safety guidance
Maritime and Coastguard Agency
- Advice Note 1033: Maritime Safety Information service
Maritime and Coastguard Agency
- GMDSS VHF DSC procedures for small boat users
Maritime and Coastguard Agency
- MSN 1676 Amendment 2: life-saving appliances
Maritime and Coastguard Agency
- Disposing of unwanted distress flares
Maritime and Coastguard Agency
- MGN 665 Amendment 1: EPIRB and PLB registration
Maritime and Coastguard Agency
- Lifejackets and buoyancy aids
Royal Yachting Association
- Kill cord safety
Royal Yachting Association
- Safety lines and clipping on
Royal Yachting Association
- Man overboard prevention and recovery
Royal Yachting Association
- Fire safety on boats
Royal Yachting Association
- Liferaft and grab-bag guidance
Royal Yachting Association
- Defence Marine Services helicopter exercise requirements
UK Ministry of Defence
- Guide to marine forecasts
Met Office
- Beaufort wind force scale
Met Office
- Marine forecasts glossary
Met Office
- Shipping Forecast key
Met Office
- Inshore Waters Forecast key
Met Office
- How to read synoptic weather charts
Met Office
- Weather fronts
Met Office
- Local and large-scale winds
Met Office
- IALA Maritime Buoyage System
International Organization for Marine Aids to Navigation
- R0111 Port Traffic Signals
International Organization for Marine Aids to Navigation
- R0110 Rhythmic Characters of Lights on Aids to Navigation
International Organization for Marine Aids to Navigation
- R0202 Marine Signal Lights: calculation and notation of luminous range
International Organization for Marine Aids to Navigation
- G1041 Sector Lights
International Organization for Marine Aids to Navigation
- ADMIRALTY List of Lights and Fog Signals
UK Hydrographic Office
- ADMIRALTY General Publications and Reference Guides
UK Hydrographic Office
- ADMIRALTY Standard Nautical Charts
UK Hydrographic Office
- ADMIRALTY Notices to Mariners
UK Hydrographic Office
- ADMIRALTY Sailing Directions
UK Hydrographic Office
- ADMIRALTY Tide Tables
UK Hydrographic Office
- ADMIRALTY EasyTide frequently asked questions
UK Hydrographic Office
- ADMIRALTY Tidal Stream Atlases
UK Hydrographic Office
- S-4: Regulations for International Charts and Chart Specifications of the IHO
International Hydrographic Organization
- The International System of Units (SI Brochure), 9th edition
Bureau International des Poids et Mesures
- Electronic Navigation Systems: Guidance for Safe Use on Leisure Vessels
Royal Institute of Navigation
- Boat Crew Handbook: Navigation and Piloting
United States Coast Guard
- Northern Stars: A Manual of Home-Study for the Mariner
National Geospatial-Intelligence Agency
- Tidal variations: the influence of position and distance
National Oceanic and Atmospheric Administration
- Marine and coastal wildlife code
UK Government
- Simplified overview of MARPOL Annex V discharge provisions
International Maritime Organization
- MGN 398 (M+F) Amendment 1: anti-fouling systems regulations
Maritime and Coastguard Agency
- Seagrass protection and recovery
Marine Management Organisation
- Marine conservation byelaws
Marine Management Organisation
- Greener boating
Royal Yachting Association
Corrections and substantial updates
Report a content concern from the page where it appears or use the contact form. Safety and factual reports are prioritised. A correction updates the visible material, its review record and the content-integrity digest together; substantial changes also update the publication metadata and changelog.