Maritime

How we can support you with class services

DNV GL has developed several class notations to support the switch to low- and zero-carbon fuels, preparing shipowners for a carbon-neutral future.

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Gas Fuelled LNG

Class notation
Class notation

Gas Fuelled LNG 

Applicable to installations where natural gas (LNG or CNG) is used as fuel. The requirements cover all aspects of the gas-fuel installation, from the ship’s gas-fuel bunkering connection all the way up to and including the gas consumers.  

DNV GL Rules Pt.6 Ch.2 Sec.5 GAS FUELLED SHIP INSTALLATIONS - GAS FUELLED LNG.

Gas Fuelled LPG

Class notation
Class notation

Gas Fuelled LPG

Applicable to installations where LPG is used as fuel. The requirements cover all aspects of the gas-fuel installation, from the ship’s gas-fuel bunkering connection all the way up to and including the gas consumers. 

DNV GL Rules Pt.6 Ch.2 Sec.13 GAS FUELLED SHIP INSTALLATIONS - GAS FUELLED LPG

Gas Ready

Class notation
Class notation

Gas Ready 

For owners who want to prepare their newbuilding for a potential later conversion to LNG fuel. The additional class notation Gas ready has supplementary levels and corresponding requirements. The minimum mandatory levels include:

  • Verification of compliance with Gas fuelled LNG rules for a future LNG fuelled ship design
  • The main engine(s) installed can be converted to gas or dual fuel operation (or are of dual fuel type from newbuilding stage).

In addition, optional levels may be included, i.e. it can be chosen to include different preparations of the ship for a later conversion and include certification and installation of parts of the LNG fuel systems in the newbuilding.

DNV GL Rules Pt.6 Ch.2 Sec.8 GAS READY SHIPS - GAS READY

LFL fuelled

Class notation
Class notation

LFL fuelled 

Applicable to installations where methanol or ethanol is used as fuel. The requirements cover all aspects of the low flashpoint liquid (LFL) fuel installation, from the ship’s LFL fuel bunkering connection all the way up to and including the consumers.

DNV GL Rules Pt.6 Ch.2 Sec.6 LOW FLASHPOINT LIQUID FUELLED ENGINES - LFL FUELLED

FC

Class notation
Class notation

FC 

Applicable to fuel cell power installations. The requirements cover design and arrangement of fuel cell power installations and the spaces containing such installations.

  • FC (Power) is applicable for vessels with fuel cell power installations intended for use in essential, important or emergency services.
  • FC (Safety) is applicable for vessels with fuel cell power installations NOT supplying essential, important or emergency services 

DNV GL Rules Pt.6 Ch.2 Sec.3 FUEL CELL INSTALLATIONS – FC

Battery

Class notation
Class notation

Battery 

Applicable to electrical energy storage (EES) installations on electric and hybrid vessel. The requirements cover design, installation and certification requirements for lithium-ion battery systems and electrochemical capacitor systems. 

  • Battery (Power) is applicable for vessels where the EES power is used for electrical propulsion of the vessel.
  • Battery (Safety) is applicable for vessels where the aggregated EES installation in one EES space has an rated capacity of 20 kWh or above and not having the Battery(Power) notation.

DNV GL Rules Pt.6 Ch.2 Sec.1 ELECTRICAL ENERGY STORAGE

WAPS

Class notation
Class notation

WAPS 

Applicable to all ship types with a wind assisted propulsion system (WAPS) installed. The requirements cover operational and technical safety aspects related to the installation of WAPS onboard ships.  

DNV GL Rules Pt.6 Ch.2 Sec.12 WIND ASSISTED PROPULSION SYSTEM – WAPS

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