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Slide 1 · MARPOL
MARPOL
COMPLIANCE
ESSENTIALS
Oil Pollution Prevention & Garbage Management Requirements
Key requirements every shipboard professional should know.
MARPOL
OIL POLLUTION PREVENTION
GARBAGE MANAGEMENT
Slide 2 · MARPOL ANNEX I
MARPOL ANNEX I
PREVENTION OF
POLLUTION BY OIL
OBJECTIVE
Prevent pollution from ships
caused by operational discharges
and accidental spills.
KEY CONSTRUCTION &
EQUIPMENT REQUIREMENTS
Double hull arrangements
Segregated ballast tanks
Slop tanks
Oil Discharge Monitoring
and Control System (ODMCS)
Oily Water Separating
Equipment (OWS)
15 ppm bilge alarm
CERTIFICATION
IOPP Certificate
Initial Surveys
Renewal Surveys
IOPP
CERTIFICATE
EVERY SHIP >400 GT REQUIRES
AN APPROVED SOPEP
SOPEP
PLAN
DOUBLE HULL
ARRANGEMENT
OIL DISCHARGE
MONITORING &
CONTROL SYSTEM
(ODMCS)
OILY WATER
SEPARATOR (OWS)
SLOP TANK
SEGREGATED
BALLAST TANKS
15 PPM
BILGE ALARM
Slide 3 · MARROL ANNEX I
MARROL ANNEX I
OPERATIONAL
COMPLIANCE
OIL POLLUTION PREVENTION IN PRACTICE
OIL RECORD BOOK (ORB)
EMERGENCY PREPAREDNESS
PART I – ALL SHIPS
Machinery Space Operations
Bilge water transfers
Sludge handling
OWS discharges
Tank to tank transfers
PART II – OIL TANKERS ONLY
Cargo & Ballast Operations
Cargo operations
Ballasting
Tank cleaning
Slop management
SOPEP / SMPEP
Every ship >400 GT (or tanker >150 GT)
must carry an approved SOPEP.
MUST INCLUDE:
Reporting procedures
Contact information
Response actions
Spill mitigation guidance
SOPEP
COMPLIANCE FLOW
OPERATION
RECORD
VERIFY
REPORT
Conduct operation in compliance with MARPOL Annex I
Record all activities in the appropriate Oil Record Book
Verify equipment performance & monitoring systems
Report as required and retain records for inspection
REMEMBER
All operations involving oil or oily mixtures must be recorded promptly and accurately in the ORB.
OPERATIONAL DISCHARGE – OIL TANKERS
Operational discharge from the cargo area of an oil tanker is permitted only under the strict conditions specified in MARPOL Annex I Regulation 34, including approved ODMCS operation and compliance with applicable discharge-rate and quantity limitations.
Slide 4 · MARPOL ANNEX V
MARPOL ANNEX V
GARBAGE
MANAGEMENT
PROTECTING OUR OCEANS, ENSURING COMPLIANCE
GARBAGE RECORD BOOK (GRB)
RECORD WHEN:
Discharging garbage into the sea
Delivering garbage to reception facilities
Transferring garbage to another ship
Incinerating garbage on board
Accidental or exceptional discharge or loss of garbage
DESIGNATED PERSON RESPONSIBILITIES (AS PER GARBAGE MANAGEMENT PLAN)
Implement the Garbage Management Plan
Ensure all crew are familiar with the plan and their responsibilities
Maintain the Garbage Record Book (GRB) entries accurately and promptly
Supervise garbage segregation, collection, storage, processing and disposal
Ensure placards are displayed in the working language and in English, French or Spanish
Retain waste delivery receipts from reception facilities and file with GRB
Report any non-compliance or accidental loss of garbage to the Master
GARBAGE CATEGORIES
PART I
CATEGORIES A – I
Applies to all ships (except platforms)
PART II
CATEGORIES J & K
Applies to ships carrying harmful substances in packaged form or as cargo residues
GRB ENTRY REQUIREMENTS (SUMMARY)
Date & Time: Record the exact date and time of the operation
Position / Location: Latitude & longitude (or port / facility / ship name)
Category: Record the correct category (A – K)
Estimated Amount: Estimated quantity in cubic metres (m³)
Remarks: Include circumstances, reason and any relevant remarks
Signature: Signed by the officer in charge of the operation*
* Entries must be signed by the officer in charge of the operation and completed in accordance with the approved GRB format and Administration requirements.
ACCURATE RECORDS PROTECT THE SHIP, CREW, COMPANY AND ENVIRONMENT.
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Drafted by SailR from our daily lessons. AI-drawn illustration. Simplified to explain the idea, not to scale. Last updated 19 Oct 2026.
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