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Maritime Compliance 9 items

MARPOL Annex IV Sewage Management Inspection

Confirms sewage treatment, holding, and discharge controls meet MARPOL Annex IV requirements.

MARPOL

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Certification and Equipment

  • Is a valid International Sewage Pollution Prevention (ISPP) Certificate held on board? *
  • Is an approved sewage treatment plant, comminuting/disinfecting system, or holding tank fitted per the certificate? *
  • Is the sewage treatment plant operating within its approval parameters? *

Holding and Piping

  • Is the holding tank of adequate capacity with a means to indicate the level? *
  • Is a standard shore discharge connection fitted for pumping sewage ashore? *
  • Are overboard discharge lines and valves free from leaks and correctly labelled? *

Discharge Controls

  • Is untreated sewage only discharged beyond 12 nm from land with the ship en route at ≥4 knots? *
  • Is treated (comminuted/disinfected) sewage only discharged beyond the applicable distance from land? *
  • Are special area restrictions (e.g., Baltic Sea for passenger ships) observed where applicable? *

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