Why Codes Exist Alongside SOLAS
SOLAS sets global minimum safety standards for ships, but it was written around conventional merchant vessels. A 45-metre superyacht carrying twelve guests for reward, or a 15-metre charter vessel carrying eight, shares little with a bulk carrier. The MCA therefore publishes purpose-built domestic codes that transpose SOLAS-equivalent safety obligations into practical, proportionate requirements for smaller commercial vessels. MSN 1858 is the underpinning notice that confirms which vessels fall under which regime and establishes the survey and certification framework in UK waters.
The Two Codes and Where They Apply
Small Commercial Vessel (SCV) Codes — The MCA publishes separate codes for small commercial vessels and small commercial motor vessels (sometimes grouped as the 'Small Vessels Code'). These apply to UK-registered or UK-operating commercial vessels that are broadly under 24 metres load line length. They cover construction, stability, fire, lifesaving appliances, machinery and manning — all calibrated to vessel size and operational category.
Red Ensign Group Yacht Code (REG YC Part A, which superseded LY3) — REG YC applies to commercially operated yachts that are 24 metres in load line length or more, up to and including 3000 GT, carrying no more than 12 passengers. It is the primary reference for the OOW (Yachts <3000 GT) candidate. Note: the published syllabus and some examiners may still refer to "LY3", but the current code is REG YC. The Code aligns UK requirements with the equivalent flag-state expectations of major registries and covers:
- Construction and stability
- Fire detection, suppression and structural fire protection
- Lifesaving appliances (LSA)
- Radio (GMDSS compliance)
- Manning, watchkeeping and certification
- Operational limitations and the Safe Manning Document
- Pollution prevention (MARPOL application)
The OOW's Practical Interface with REG YC
On watch, REG YC sets the standard your vessel must meet before departure and while at sea. The OOW must know:
- The vessel's operational area as defined in its certificate — the Code uses categories comparable to SOLAS (unrestricted, limited, etc.) and operations outside that area are non-compliant.
- Manning requirements — the Safe Manning Document issued under REG YC specifies minimum certificated watchkeepers. Sailing short-handed below that minimum is unlawful.
- LSA and fire equipment — REG YC prescribes the type, quantity and servicing intervals. As OOW you are responsible for knowing where equipment is, that it is within its service date, and that musters and drills meet the code's frequency requirements.
- Log entries and documentation — REG YC requires drill records, safety briefings for new crew and passengers, and defect reporting to the Master.
Key Distinction for the Oral
Examiners test whether candidates know which code governs their vessel and why. If your yacht is 35 metres, carries 10 guests commercially, and is UK-flagged — REG YC applies. If it is 18 metres on domestic charter — the Small Vessels Code applies. Confusing the two demonstrates a fundamental gap.