Explain why a yacht's gross tonnage matters under the Large Yacht Code beyond simply determining manning levels, and name at least one specific tonnage threshold that changes the requirements applied.

A. GROSS TONNAGE BANDS — WHY THEY MATTER UNDER THE CODE: Several Code requirements scale directly with GT rather than applying a single uniform standard: (1) 200GT THRESHOLD: crew accommodation equivalence to MLC 2006 is applied on a sliding scale starting around 200GT (lower compliance percentage for cabin dimensions etc. closer to this threshold); (2) 500GT THRESHOLD: yachts at or above 500GT must fully comply with MLC 2006 crew accommodation standards (100% — no sliding-scale reduction), and structural fire protection requirements for ≥500GT yachts are derived from SOLAS passenger ship rules for vessels carrying fewer than 36 passengers, which is materially more demanding than the requirements below that threshold; (3) Manning and certification requirements (which Master/OOW certificate of competency is required) are also tonnage-linked, e.g. Master <200GT, Master/OOW <500GT, Master/OOW (Yachts) Unlimited. PRACTICAL IMPLICATION: a build or major refit that pushes a yacht's measured GT across one of these thresholds can trigger a step-change in required crew accommodation standard or fire protection standard — not a small incremental change — which is why naval architects and owners take GT band carefully into account at the design stage, not just for vanity/marketing tonnage reasons.

B. Gross tonnage under the Code only affects harbour dues and registration fees and has no bearing on safety equipment, manning or accommodation requirements.

C. All Code requirements apply uniformly regardless of tonnage; only the 24-metre length threshold for Code applicability itself matters.

D. Tonnage bands under the Code are set by individual classification societies and vary so much between societies that no general statement can be made.

A. THE LARGE (COMMERCIAL) YACHT CODE — LY3: Issued by the UK MCA, came into force 20 August 2013. SCOPE: commercially operated yachts that are 24 metres or over in load line length, carry no cargo, and carry no more than 12 passengers. LY3 removed the earlier 3,000GT ceiling, so megayachts of any tonnage can be coded as commercial yachts provided the 12-passenger limit is respected. CURRENT STATUS: since 1 January 2019, LY3 has been formally superseded on Red Ensign Group (REG) flags by the REG YACHT CODE, which merged LY3 and the Passenger Yacht Code (PYC) into a single document — Part A is the large-yacht successor to LY3, Part B covers passenger yachts (charter with more passengers under the relevant licence). The REG Yacht Code has since had further editions (most recently July 2024). PRACTICAL POINT: "LY3" remains common industry shorthand for "the large yacht code," even on vessels now actually coded to the REG Yacht Code — a candidate should recognise both terms refer to the same regulatory lineage, not confuse it with SOLAS (which applies to trading cargo/passenger ships, not coded yachts).

B. LY3 is a private insurance standard with no legal force — yachts may choose to follow it or not, and flag states have no role in enforcing it.

C. LY3 applies to all yachts regardless of size, including private (non-commercial) yachts under 24 metres, and to ships in commercial cargo trade.

D. LY3 has been replaced by SOLAS for all yachts over 500GT and no longer exists as a separate regulatory framework at any tonnage.

A. CODE COMPLIANCE CERTIFICATE (CCC) — PURPOSE AND DISTINCTION: The CCC confirms the yacht has been surveyed and found to comply with the applicable edition of the Large Yacht Code / REG Yacht Code in its construction, stability, fire protection, life-saving appliances, and equipment. It is the Code-specific equivalent of a SOLAS Safety Certificate for a coded commercial yacht. OTHER CERTIFICATES SERVE DIFFERENT PURPOSES: (1) TONNAGE CERTIFICATE — confirms gross and net tonnage, which determines which provisions of the Code (and other regulations) apply, since several Code requirements scale by GT band (e.g. crew accommodation equivalence bands at 200GT and 500GT); (2) LOAD LINE CERTIFICATE — verifies the yacht's freeboard/draught marks and confirms hull/freeboard integrity against the applicable Load Line rules; (3) SAFETY CERTIFICATE — where issued separately, covers specific safety equipment scope. WHO ISSUES/SURVEYS: typically a Recognised Organisation (classification society) acting on behalf of the flag state, not the MCA directly for most flags. A yacht operating commercially without a valid CCC is not lawfully coded — it cannot carry fare-paying charter guests or operate to the Code's reduced-passenger commercial basis.

B. The Code Compliance Certificate and the Tonnage Certificate are the same document under a different name — either may be presented to a surveyor or Port State Control officer.

C. The CCC only needs to be obtained once at build and never expires or requires renewal regardless of changes to the vessel.

D. A yacht can operate commercially with guests on board without a CCC as long as the crew hold valid certificates of competency.