HomeCalculatorsLloyd's Register ECO Notation

Lloyd's Register ECO Notation

LR's ECO descriptive notation - granular add-on tags (A, B, C, S, G, W, BWM, OW) that document specific environmental features rather than a single scoring level. Stacks with ENVIRO+-style peers from other IACS members.

ClassLR

ECO add-on tags

A - air-emission controls (SOx + NOx)B - bilge (oily water and ballast)C - cargo (vapour emission, double-hull)S - sewage + grey waterG - garbage (incinerator + handling)W - underwater noise + anti-foulingBWM - ballast water managementOW - ozone-depleting substances phase-out

Tags awarded

5/8

Notation string

ECO(A, B, S, G, BWM)

Formula, assumptions, and limits

LR's ECO notation concatenates the letter tags for which the ship meets the criteria. Example: "ECO(A, B, S, G, BWM)" = five tags met. Each tag is individually surveyable and renewable at class survey.