On 12 December 2025, the Maritime and Coastguard Agency's Sport or Pleasure Vessel Code — formally The Safety of Small Vessels in Commercial Use for Sport or Pleasure — came into effect. Commonly referred to in the industry as the Unified Code, it consolidates four previously separate codes: the Blue Code (small commercial sailing craft), the Yellow Code (small commercial motor vessels), the Red Code (vessels operating from a nominated departure point), and the IPV Code (vessels in temporary commercial use).
For surveyors who conduct MCA coding surveys on narrowboats, RIBs, small passenger vessels, charter sailing craft, and other small commercial vessels, this is a significant regulatory change that requires review of existing survey procedures. This guide explains what changed, what to review before the next coding survey, and how Marine Inspect's statutory form pre-filling has been updated to reflect the new standard.
Why the Codes Were Unified
The previous multi-code system created genuine complexity for surveyors and operators working across vessel types or operating areas. A small commercial sailing school yacht operating between an inland lake and tidal coastal waters could fall under different code provisions depending on where it operated. A commercial RIB operating in Category 2 coastal waters had Yellow Code requirements, while a similar vessel operating at a lake activity centre was under the Red Code. Vessels in temporary commercial use — such as a privately owned yacht hired out for a single charter season — fell under the separate IPV Code entirely.
The Sport or Pleasure Vessel Code replaces this with a single standard that applies across all small commercial vessels, with operational requirements determined by the vessel's certified Area Category (0–6, where Category 6 is the most sheltered — within 3nm of land, daylight, favourable weather — and Category 0 is unlimited ocean service). Most small commercial leisure craft in the UK operate in Area Categories 3–6.
The goal is a cleaner, more consistent standard that is easier for operators to comply with and for surveyors to apply consistently.
What Changed for Surveyors
Survey scope
The Unified Code introduces harmonised requirements for stability, buoyancy, fire suppression, and radio equipment across vessel categories. For surveyors, the key changes to be aware of are:
Stability and loading information: The Unified Code requires that all small commercial vessels carry an approved stability booklet or simplified stability guidance appropriate to their category. Where a vessel was previously operating under the Blue Code (which had more limited stability requirements than Yellow Code), surveyors should verify that updated stability documentation exists and is approved for the vessel's new Unified Code operating category.
Fire suppression: The Unified Code harmonises fire suppression requirements across categories. Some vessels previously coded under the Blue Code had less stringent fixed system requirements than equivalent Yellow Code vessels. Surveyors should verify current requirements for the relevant operating category rather than assuming the previous code's provisions still apply.
Radio equipment: The Unified Code aligns radio carriage requirements with the vessel's operating area more precisely than some previous code provisions. VHF carriage is mandatory for all categories; DSC-equipped VHF and EPIRB requirements escalate with operating category.
Liferaft and immersion suit requirements: Requirements have been harmonised and in some categories tightened. Check the specific requirements for the operating category against the vessel's current equipment list.
Report documentation
The SCV2 Document of Compliance and the MCA Application form have both been updated to reflect the Unified Code structure. Marine Inspect's statutory form pre-filling draws vessel particulars directly from the survey record and pre-populates the forms — these have been updated to the current post-December 2025 versions. Surveyors using other tools or templates should download the current form versions directly from the MCA website before conducting a coding survey — form reference numbers are subject to revision and should be verified at the point of use.
Keeping Competence Current
Professional bodies (such as YDSA) expect members to maintain Continuing Professional Development (CPD) that keeps their knowledge current, and the Unified Code is a significant regulatory change. There is a second layer for coding work specifically. A coding survey is carried out by an "authorised person" acting for a Certifying Authority, and where an owner disputes a finding the appeal route runs to that Certifying Authority and then to the Administration, not to a professional body. Standing to conduct coding surveys comes from the Certifying Authority, not from membership alone.
A surveyor conducting coding surveys without specific awareness of the Unified Code's requirements is at professional risk. Not just the risk of producing a report that incorrectly references superseded code provisions, but the risk that a coding survey they conducted is later found to have missed requirements under the new standard.
CPD events addressing the Unified Code are running across the industry. For anyone who has not already attended one, this is the priority for the first quarter of 2026.
A practical check: a standard coding survey checklist or template last reviewed before December 2025 needs updating before the next coding survey. A checklist that references "Yellow Code clause 4.3" rather than the Unified Code equivalent is not fit for purpose after 12 December.
Vessels Coded Under the Previous Framework
Where a vessel held a valid Document of Compliance under one of the previous codes before December 2025, confirm with the MCA what applies at its next renewal. Check whether any transitional arrangements are in force and verify the requirements directly with the MCA before conducting the survey — do not assume the old code's provisions carry over automatically. Vessels that have been modified since their last Document of Compliance was issued (additional passenger capacity, structural changes, equipment changes) may require assessment against the full Unified Code requirements regardless of when the previous document was issued.
Narrowboats and Inland Craft
The most useful thing a surveyor working on narrowboats and inland waterways craft can know about the Sport or Pleasure Vessel Code is that it does not reach them. The Code applies to seagoing vessels, meaning those going beyond the limits of categorised waters A to D. A boat working the inland network never becomes seagoing, so nothing in its regulatory framework changed on 12 December 2025. The practical survey implications for narrowboats are addressed in detail in our dedicated guide: Surveying Narrowboats: The Rules Differ.
Key points for narrowboat surveyors:
- The BSS (Boat Safety Scheme) continues to apply to craft on the inland waterways network, privately operated and commercially operated alike. Private boats are examined on the four-year private cycle; hire fleets are examined against the separate and stricter BSS Hire Boat Requirements and run on a CRT business licence. Neither is affected by the Code.
- A hire narrowboat is not a "small commercial vessel" for the purposes of this Code, whatever its commercial status on the water. Inland commercial craft sit under BSS hire boat requirements, the Inland Waters Small Passenger Boat Code (COP13, up to twelve passengers), or an MCA Passenger Certificate for more than twelve passengers.
- The twelve-passenger ceiling is worth noting on its own account: the Code excludes any vessel carrying more than twelve passengers, wherever it operates. A larger trip boat is outside the Code even at sea.
- Where a buyer or owner asks whether a current BSS certificate means the boat has been surveyed, the answer is no. See BSS vs pre-purchase survey for the full separation of scope.
Defect Classification Under the Unified Code
The standard A/B/C defect classification system continues to apply to survey findings regardless of the regulatory code under which the survey is conducted. However, the threshold for Category A in a coding survey context may be affected by the Unified Code changes.
Specifically: where a defect relates to a piece of safety equipment that was previously optional under the old provisions but is now mandatory under the Sport or Pleasure Vessel Code for the same vessel type, the defect's classification should reflect the new legal requirement. Equipment that the vessel is now legally required to carry in good working order, but is absent or defective, should generally be Category A. The defect is not just a safety issue — it is a legal non-compliance.
Review our full guide to IIMS Category A, B and C Defect Classification for the general classification framework.
Five Things to Check Before the Next MCA Coding Survey
The checklist template — does it reference the Unified Code, or the superseded Blue/Yellow/Red Code provisions? If the latter, update before conducting the survey.
The applicable SCV2 and MSF 5100 form versions — download the current versions from the MCA website. Forms updated post-December 2025.
The vessel's operating Area Category — under the Sport or Pleasure Vessel Code, the operating area is defined by the vessel's certified Area Category (0–6). Confirm this has been assessed and stated against the correct criteria in the new Code, not the superseded provisions.
Stability documentation — does the vessel have an approved stability booklet (or equivalent simplified guidance) appropriate for its Unified Code operating category? This is a specific requirement under the new standard.
The CPD record — has training covering the Unified Code been attended, and for coding work, is the surveyor's authorisation with their Certifying Authority current against the new standard? If not, this is the first gap to address.
Marine Inspect and the Unified Code
Marine Inspect's checklist templates for small commercial vessel surveys have been updated to reflect the Unified Code requirements. The statutory form pre-filling — which automatically populates the SCV2 and MSF 5100 from the survey record — uses the current post-December 2025 form versions. Templates in Marine Inspect for coding surveys are already current. For anyone weighing a switch from a paper or Word-based workflow, the transition to the Unified Code is a natural point at which to update tooling.
Related reading: Surveying Narrowboats: The Rules Differ, IIMS vs YDSA: Which Membership Is Right?, and IIMS Category A, B, C Defects Explained