ICE (C)

Vessels intended for navigation in light ice conditions

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Other DNV-GL class notations

Supply vessel (Basic)

Compliance with design requirements for vessels providing services for offshore installations

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Offshore Service Vessel (+)

Compliance with design requirements for services in harsh weather conditions

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HELDK (H)

Helicopter deck: Additional requirements to helicopter safety

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HELDK (S)

Helicopter deck: Additional requirements to vessel safety

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BWM (T)

Ballast water treatment

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VIBR

Limitations to vibrationlevels

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F-M

Additional fire protection for machinery spaces - general

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F-A

Additional fire protection in accommodation area

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Battery (Power)

Compliance with design requirements for vessels where the EES (Electrica Energy Storage) power is used for electrical propulsion of the vessel.

Applicable to:

Hybrid vessel where one of the main sources of power is based on EES.

Hybrid vessel having an operational mode where the vessel is operatingon EES power only, withthe other main source ofpower in standby

Hybrid vessel usingthe EES system as are dundant source of power for main and/or additional class notations, e.g. dynamic positioning.

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TMON

Tail shaft monitoring enables operators to continuously observe and assess the condition of the shaft(s) which may extend interval between tail shaft surveys/tail shaft withdrawal

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Clean

Clean:

Arrangements for controlling and limiting operational emissions and discharges

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LFL (1)

Designed for carriage of liquid with flashpoint lower than 43°C

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HL (2,5)

Tanks or holds strengthened for heavy liquid, where number denotes the maximumdensity in t/m3 in specifiedcargo tanks

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NAUT OSV (A)

NAUT:

Requirements withinbridge design, bridgeinstrumentation andworkstation arrangements.Vessels with NAUT-notationwill comply with theprinciples and aims ofSOLAS V/15 and IMO MSC/Circ.982.

OSV:

Vessels operating asservice vessels for offshoreindustry

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HL (2,8)

Tanks or holds strengthened for heavy liquid, where number denotes the maximumdensity in t/m3 in specifiedcargo tanks

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E0

In compliance with design requirements for periodically unattended machinery spaces

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DK (+)

Weather deck strengthenedfor heavy cargo

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COMF (V-3)

Vessels designed for enhanced comfort by reducing noise and vibration.Number denotes comfort rating number

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SPS

Ships carrying special pesonnel who are neither crew members nor passengers

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BIS

Built for in-water survey of the vessel bottom and related items

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OILREC

Recovered oil reception and transportation

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Fire Figher 1

Fire fighting with active protection, giving it the capability to withstand higher heat radiation loads from external fires

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LFL (*)

Designed for carriage of liquid with flashpoint lower than 43°C

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COMF-C (3)

Vessels designed for enhanced comfort by improved indoor climate. Number denotes comfort rating number

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Clean (Design)

Clean:

Arrangements for controlling and limiting operational emissions and discharges

Design:

Additional design requirements for protection against accidents and for limiting their consequences

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DYNPOS AUTR

Dynamic positioning system with redundancy in technical design. Provides higher availability and robustness compared to DPS(2)

Includes redundant DP control system, single joystick control system and manual levers control backup

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SF

Compliance with requirements to damage stability

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Offshore Supply Vessel

Compliance with design requirements for vessels providing services for offshore installations

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Offshore Service Vessel

Compliance with design requirements for vessels providing services for offshore installations

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DNV ✠ 1A1

The main class notation 1A will be assigned to vessels with hull, machinery, systems and equipment found to be in compliance with applicable rule requirements

The construction symbol ✠ (*) will be assigned to vessels built under the supervision of the Society.

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