ship handling

Home page|| Tanker Notes || Container Ship Operations || Ocean Navigation ||



Marpol Annex 1 -Regulations for preventing oil pollution from ships

To prevent pollution of the sea and the consequent destruction and damage to life in it and along its shores, extensive international legislation exists, and some nations enforce far-reaching and strict laws. Attention is drawn to national laws in the appropriate volumes of Admiralty Sailing Directions.

Actual or probable, discharges of oil or noxious substances, or sightings of pollution should be reported to the coastal authorities.

Specific instructions on reporting, where known, are given in Admiralty List of Radio Signals Volume 1.

MARPOL Annex I (Oil) entered into force on 2nd October 1983. It contains regulations for the prevention of pollution by oil. The United Kingdom domestic legislation to implement this Annex was the Merchant Shipping (Prevention of Oil Pollution) Regulations 1983.


Discharging of Oil : The regulations govern the discharges, except for clean or segregated ballast, from all ships. They require inter alia all ships to be fitted with pollution prevention equipment to comply with the stringent discharge regulations.

Discharge into the sea of oil or oily mixtures, as defined in an Appendix to the Convention, is prohibited by the regulations of AnnexI except when all the following conditions are satisfied.

From the machinery space bilges of all ships, except from those of tankers where the discharge is mixed with oil cargo residue: These restrictions do not apply to discharges of oily mixture which without dilution have an oil content not exceeding 15ppm.

From the cargo area of an oil tanker (discharges from cargo tanks, including cargo pump rooms; and from machinery space bilges mixed with cargo oil residue): Shipboard Oil Pollution Emergency Plans (SOPEP): Regulation26 of Annex1 to MARPOL 73/78 requires every oil tanker of 150grt and above and every other vessel of 400grt and above, to carry on board a SOPEP approved by the vesselís flag administration. Regulation26 came into force on 4 April 1995 for all existing vessels.

IMO has produced guidelines, as IMO Resolution MEPC 54(32), for the development of SOPEPs. This regulation also applies to offshore installations engaged in gas and oil production, seaports and oil terminals.

Environment Aspects / Causes of Pollution from Ships

The interface of ships with the marine and air environments can lead to their potential pollution in the following ways:

1. Pollution by Oil (including Oily Bilge Water)

2. Pollution by other Noxious substances & Packaged Harmful substances

3. Pollution by Garbage

4. Pollution by Sewage

5. Air pollution from Engine

6. Emission of Ozone-depleting substances

7. Leaching from Anti-fouling of Hull paint

8. Pollution by Ballast water (migration of invasive species)

Items (1) to (6) above are governed by the MARPOL Convention

Item (7) is in Convention on the Control of Harmful Anti-fouling Systems on Ships

Item (8) comes under Convention for the Control and Management of Ships' Ballast Water and Sediments

Any sighting of pollutant around or near the vessel should immediately brought to the notice of ships master and action to be taken to mitigate pollution as per SOPEP.




Read more on

Burning Of Diesel and Heavy Fuel Oil -Impacts on environment


Preventing environmental pollution more topics :

Oil spillage prevention procedure

Pollution by other harmful substances & harmful packaged goods

Pollution by garbage [ Marpol annex V ]

Pollution by sewage [ Marpol annex IV ]

Pollution of air [ Marpol annex VI ]

Prohibition on use of harmful (TBT) anti-fouling paints

Purpose of the Ballast Water Management System to protect marine environment

Prevention of pollution while carryiung out overboard maintenance

Environment friendly purchasing

Decommissioning / ship recycling

Environmental awareness

Use of bilge oily water separator



Related articles

How to maintain safety during routine engine room operations?

Safety precautions prior transferring oil

How to report in case of an oil spillage onboard

How to use low sulphur fuel oil onboard

Bunkering arrangement and safety factors onboard

Bunkering safe procedure and detail guideline for ships

Operational guideline during bunkering

What is fuel oil additive ?

How to start heating of fuel oil storage tank ?

Dealing with low quality fuel oil

What is the procedure for fuel oil viscosity control ?

How to keep a sample of fuel oil received ?

How to keep bunkering record ?

Acceptance / rejection of fuel in a quality dispute

Procedure for receiving lub oil

Precautions prior transferring fuel oil into storage tanks

Ballast water management system

Oil pollution prevention method

General precautions for tankers

Tanker vessel safety guideline - Check items in oil tankers operation

Tanker vessel safety guideline - prior entering cold region

Tanker vessel safety guideline - controlling oil pollution

How to prevent oil spillage


Stranding handling checklist

How to request salvage contract for a stranded vessel

Handling the salvage of another ship,salvage report and towing arrangement

Requirement of towing arrangement in oil tankers, readyness, & training onboard

How to deal with ships power failure ? ....




Other info pages !

Ships Charterparties Related terms & guideline
Stevedores injury How to prevent injury onboard
Environmental issues How to prevent marine pollution
Cargo & Ballast Handling Safety Guideline
Reefer cargo handling Troubleshoot and countermeasures
DG cargo handling Procedures & Guidelines
Safety in engine room Standard procedures
Questions from user and feedback Read our knowledgebase






ShipsBusiness.com is merely an informational site about various aspects of ships operation,maintenance procedure, prevention of pollution and many safety guideline. The procedures explained here are only indicative, not exhaustive in nature and one must always be guided by practices of good seamanship.

User feedback is important to update our database. For any comment or suggestions please Contact us
Site Use and Privacy - Read our privacy policy and site use information.
Terms and conditions of use

Copyright © 2015 www.shipsbusiness.com All rights reserved.