ABS ENVIRO / ENVIRO+ Notation
American Bureau of Shipping's environmental notation. ENVIRO covers MARPOL-plus operational compliance; ENVIRO+ adds advanced protections for air, water, and waste. Widely adopted on US-flag and cruise fleets.
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Formula, assumptions, limits
ENVIRO = all four baseline items. ENVIRO+ = ENVIRO plus all four advanced items. Formal notation issued only after ABS surveyor audit and operational evidence. UWN (underwater radiated noise) is a recent addition (2022) driven by cruise and research-ship demand.
In short
Check eligibility for ABS ENVIRO and ENVIRO+ class notations covering operational compliance and advanced protections.