- DNV classification rules 2026 introduce three new class notations and six new qualifiers, taking effect on 1 January 2027.
- New Shore power ready and Gas bunker notations apply directly to vessels calling at storage terminals for LNG, LPG, ammonia and ethane transfer.
- DNV has discontinued standalone fire safety class rules, folding requirements fully into statutory SOLAS certification.
- A new VCS(P, X kN/m²) qualifier standardises vapour control system ratings for high-pressure cargo interfaces.
- Terminal operators managing ship-to-shore connections have roughly 15 months to review interface compatibility before the deadline.
DNV classification rules 2026: new notations for gas and shore power
DNV published its July 2026 edition of class rules and standards for ships and offshore units on 92 documents following a hearing process, with the changes entering into force on 1 January 2027. DNV classification rules 2026 carry direct consequences for terminal operators even though the update is written for owners, shipyards and flag states rather than storage sites.
Three new class notations appear in the ship rules: FL(Y, E), which sets a design fatigue life under specified operating conditions; Battery ready, for vessels prepared to add batteries to their main energy system; and Shore power ready, for vessels prepared for shore power installations. DNV’s own release notes on the July 2026 edition confirm the entry-into-force date and the full notation list (DNV).
Six qualifiers were also added to existing notations. The two most relevant to storage terminals are Tanker for liquefied gas(FSM), covering vessels designed to store and transfer liquefied gas, and Gas bunker(LNG, LPG, NH₃, ETH), which specifies exactly which alternative fuels a vessel is cleared to handle during bunkering. Terminals running LNG bunkering operations will want their fleet contacts confirming which notation applies before scheduling 2027 calls.
How DNV classification rules 2026 affect terminal interfaces
The qualifier with the most direct bearing on tank terminal design is VCS(P, X kN/m²), which standardises vapour control system ratings on vessels handling high-pressure cargoes. Terminals with vapour recovery systems tied to ship manifolds will need to check that their own equipment ratings align with the vessel-side classification once counterparties start carrying the new notation.
The BCLIQ(Partial) qualifier is narrower but still worth tracking. It allows selected cargo holds only to be used for goods that can liquefy in transit, which changes how a vessel declares its cargo state on arrival at a receiving terminal. Combined with the existing framework covered in DNV’s guidance on tank farm design and safety standards, operators handling bulk liquids with liquefaction risk have another compliance box added to pre-arrival checks under DNV classification rules 2026.
None of these notations are retroactive on existing tonnage. DNV states the updated rules may be applied to projects contracted before the entry-into-force date only where all parties agree, so terminals should not assume every calling vessel will carry the new codes from day one in 2027.
Fire safety folds into statutory certification
One of the more consequential changes has nothing to do with a new notation. DNV has discontinued separate class rules for fire safety altogether, shifting coverage entirely onto statutory frameworks such as SOLAS. For terminal operators coordinating jetty and berth safety cases with visiting vessels, this means fire safety compliance now sits on a single statutory certificate rather than a parallel class document, which should simplify cross-checking during vetting and port state control.
Marine safety bodies that terminals already work with on interface standards, including the frameworks maintained by OCIMF, will likely need to reference the statutory route explicitly in future guidance updates rather than pointing to class society fire rules as a secondary source.
Timeline and what terminal operators should check
The rules enter into force on 1 January 2027, with DNV publishing one main rule edition annually and the next scheduled for July 2027. Any amendments issued between main editions will appear in DNV’s Rules and Standards Explorer rather than as a fresh edition. A second industry report on the release confirmed the same notation list and entry-into-force date (Hellenic Shipping News).
Terminal operators do not need to reclassify their own tanks under this update since it governs vessels, not shore-side storage. The practical task is contractual: confirming which notations charter parties and regular callers will carry from 2027, and whether existing loading arm, vapour recovery and shore power infrastructure matches what DNV classification rules 2026 assume on the ship side.
When do the new DNV classification rules take effect?
The July 2026 edition enters into force on 1 January 2027. DNV publishes one main rule edition annually, with the next scheduled for July 2027.
What is the DNV Shore power ready notation?
It’s a new class notation confirming a vessel is prepared for shore power installations, relevant to terminals offering shoreside electrical connections during berthing.
Does the Gas bunker notation apply to LNG terminals?
Yes. The Gas bunker(LNG, LPG, NH₃, ETH) qualifier specifies exactly which alternative fuels a vessel is cleared to handle during bunkering, including at LNG bunkering terminals.
Why did DNV discontinue separate fire safety class rules?
DNV folded fire safety requirements fully into statutory certification frameworks such as SOLAS, removing the parallel class-rule layer that previously existed alongside it.
Are the 2026 DNV rules retroactive for existing vessels?
No. DNV states the updated rules may only apply to projects contracted before the entry-into-force date if all parties agree to adopt them.