IMO MARPOL Annex I Oil Record Book - Machinery Space Operations

MARPOL Annex I requires all ships of 400 GT and above to maintain an Oil Record Book Part I covering machinery space operations. Every discharge, transfer, or disposal of oily mixtures must be recorded in the ORB within 24 hours. The standard for any overboard discharge is 15 ppm or less with the oil filtering equipment operating; discharges into Special Areas (Mediterranean, Baltic, Gulf, Red Sea, Antarctic) are prohibited entirely. Falsification of the ORB is a criminal offense in most flag st

  • Industry: Transportation & Logistics
  • Frequency: Quarterly
  • Estimated Time: 20-30 minutes
  • Role: Chief Engineer
  • Total Items: 17
  • Compliance: OSHA General Duty Clause, 29 CFR 1910, Industry Best Practices

Oil Record Book Part I - Current Entries

Verify ORB Part I is current, entries are in the correct format per MARPOL Annex I Regulation 17, and the book is signed by the master.

  • ORB Part I entries recorded within 24 hours of each oily water operation?
  • Each ORB entry signed by the officer in charge of the operation?
  • Each completed page countersigned by the master?
  • ORB code letters (A through J) used correctly for each operation type?

Oily Water Separator (OWS) Function and 15-PPM Alarm

The OWS must process bilge water to 15 ppm before any overboard discharge is permitted.

  • OWS operational; oil content meter calibrated and within service interval?
  • 15-ppm alarm and automatic stop valve functional (tested with test solution)?
  • OWS processing records match ORB Part I entries for bilge pump-outs?
  • OWS last service date:

Bilge Tank Levels and Retention Compliance

All oily bilge water must be retained for discharge to shore reception or processing through the OWS.

  • Bilge tank capacity adequate for voyage without requiring overboard discharge?
  • Bilge holding tank current level and capacity:
  • Bilge transfer log matches ORB entries and bilge pump records?

Shore Reception and Sludge Disposal

Sludge oil from centrifuges must be disposed of ashore or at sea per MARPOL Annex I regulations.

  • Sludge tank (ORB Code C) levels recorded daily or as required?
  • Shore reception facility receipts for last sludge and bilge discharge ashore on file?
  • Sludge incinerator (if equipped) operational log matches ORB Code F entries?

ORB Retention and MARPOL Compliance Summary

ORB must be retained for 3 years after the date of last entry per MARPOL Annex I Regulation 17.7.

  • Previous ORB Part I books retained for 3 years from date of last entry?
  • No evidence of magic pipe or unauthorized discharge connections found?
  • Chief engineer signature (ORB Part I responsibility):

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Why Use This IMO MARPOL Annex I Oil Record Book - Machinery Space Operations?

This imo marpol annex i oil record book - machinery space operations helps transportation & logistics teams maintain compliance and operational excellence. Designed for chief engineer professionals, this checklist covers 17 critical inspection points across 5 sections. Recommended frequency: quarterly.

Ensures compliance with OSHA General Duty Clause, 29 CFR 1910, Industry Best Practices. Regulatory-aligned for audit readiness and inspection documentation.

Frequently Asked Questions

What does the IMO MARPOL Annex I Oil Record Book - Machinery Space Operations cover?

This checklist covers 17 inspection items across 5 sections: Oil Record Book Part I - Current Entries, Oily Water Separator (OWS) Function and 15-PPM Alarm, Bilge Tank Levels and Retention Compliance, Shore Reception and Sludge Disposal, ORB Retention and MARPOL Compliance Summary. It is designed for transportation & logistics operations and compliance.

How often should this checklist be completed?

This checklist should be completed quarterly. Each completion takes approximately 20-30 minutes.

Who should use this IMO MARPOL Annex I Oil Record Book - Machinery Space Operations?

This checklist is designed for Chief Engineer professionals in the transportation & logistics industry. It can be used for self-assessments, team audits, and regulatory compliance documentation.

Can I download this checklist as a PDF?

Yes, this checklist is available as a free PDF download. You can also use it digitally in the POPProbe mobile app for real-time data capture, photo documentation, and automatic reporting.

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