MARPOL Annex 1 Chapter 3
Annex 1 chapter 3 is requirements for the machinery space
It has 3 parts. Part A, Part B, and Part C
Part A- Construction
Regulation 12 – Tanks for oil residues (sludge)
Every ship of 400 gross tonnages and above shall be provided with a tank or tanks of adequate capacity to receive the oil residues (sludge) resulting from the purification of fuel and lubricating oils and oil leakages in the machinery spaces.
Piping to and from sludge tanks shall have no direct connection overboard, other than the standard discharge connection
Regulation 13 – Standard discharge connection
To enable pipes of reception facilities to be connected with the ship’s discharge pipeline for residues from machinery bilges and from sludge tanks, both lines shall be fitted with a standard discharge connection of specified dimensions.
| International Shore Connection | Annex 1 | Annex 4 | |
| Description | |||
| Outside Diameter (OD) | 178mm | 215mm | 210mm |
| Inside Diameter (ID) | 64mm | According to pipe, max 125 mm outer dia | According to pipe dia, max 100mm outer dia |
| Bolt Circle Diameter (PCD) | 132mm | 183mm | 170mm |
| Slots in Flange | 4 holes | 6 holes | 4 holes |
| Bolt Hole dia | 19mm | 22 mm | 18mm |
| Bolt dia | 16mm | 20 mm | 16mm |
| Flange Thickness | 14.5 mm minimum | 20 mm | 16mm |
| Bolts & Nuts | 4 bolts, 4 nuts | 6 bolts, 6 nuts | 4 bolts, 4 nuts |
| Bolt length | 50mm | Suitable length | Suitable length |
| Washers | 8 nos | 12 nos | 8 nos |
| Pressure | 10 bar | 6 bar | 6 bar |
Part B – Equipment
Regulation 14 – Oil filtering equipment
→Any ship of 400 gross tonnages and above but less than 10,000 gross tonnages shall be fitted with oil filtering equipment of a design approved by the Administration. This equipment will ensure that any oily mixture discharged into the sea after passing through the system has an oil content not exceeding 15 parts per million.
→Any ship of 10,000 gross tonnages and above shall be fitted with oil filtering equipment, of a design approved by the administration and should ensure that
→any discharge of oily mixtures is automatically stopped when the oil content of the effluent exceeds 15 parts per million.
In addition, it shall be provided with alarm arrangements to indicate when this level cannot be maintained.
Ships, such as hotel ships, storage vessels, etc., which are stationary don’t need to be provided with oil filtering equipment.
Such ships shall be provided with a holding tank having a volume adequate for the total retention on board of the oily bilge water.
All oily bilge water shall be retained on board for discharge to reception facilities.
Part C- Control of operational discharge of oil
Regulation 15 – Control of discharge of oil
A Discharges outside special areas
Any discharge into the sea of oil or oily mixtures from ships of 400 gross tonnages and above shall be prohibited except when all the following conditions are satisfied:
- The ship is proceeding en route.
- The oily mixture is processed through oil filtering equipment meeting the requirements of this Annex
- The oil content of the effluent without dilution does not exceed 15 parts per million
- The oily mixture does not originate from cargo pump-room bilges on oil tankers
- The oily mixture, in the case of oil tankers, is not mixed with oil cargo residues.
B Discharges in special areas
Any discharge into the sea of oil or oily mixtures from ships of 400 gross tonnage and above shall be prohibited except when all of the following conditions are satisfied:
1 The ship is proceeding en route;
.2 The oily mixture is processed through an oil filtering equipment equipped with auto stopping device with an alarm system
.3 The oil content of the effluent without dilution does not exceed 15 parts per million;
.4 The oily mixture does not originate from cargo pump-room bilges on oil tankers; and
.5 The oily mixture, in case of oil tankers, is not mixed with oil cargo residues.
Regulation 16 – Segregation of oil and water ballast and carriage of oil in forepeak tanks
For ships above 400 GT other than oil tankers and oil tankers of 150 GT and above no ballast water shall be carried in any oil fuel tank.
When need to carry large quantities of oil fuel and for this purpose need to carry ballast water in fuel tanks such ballast water shall be discharged to reception facilities and an entry shall be made in the Oil Record Book.
For ships of 400 GT and above built after January 1982, shall not carry oil in fore peak tank or forward of the collision bulkhead
Regulation 17 – Oil Record Book, Part I (Machinery space operations)
• Every oil tanker of 150 gross tonnage and above and every ship of 400 gross tonnage and above other than an oil tanker shall be provided with an Oil Record Book Part I (Machinery space operations).
• The Oil Record Book Part I shall be completed on each occasion, on a tank-to-tank basis whenever any of the following machinery space operations takes place in the ship: - Ballasting or cleaning of oil fuel tanks;
- Discharge of dirty ballast or cleaning water from oil fuel tanks;
- Collection and disposal of oil residues (sludge and other oil residues);
- Discharge overboard or disposal otherwise of bilge water which has accumulated in machinery spaces; and
- Bunkering of fuel or bulk lubricating oil.
- Accidental discharge and reason for that
• Each operation shall be fully recorded without delay
• Each entry shall be signed by the officer or officers in charge of the operations concerned and each completed page shall be signed by the master of ship.
• Entries should have made in English, French or Spanish
• Any failure of the oil filtering equipment shall be recorded in the Oil Record Book Part I.
• The Oil Record Book Part I shall be kept in such a place as to be readily available for inspection at all reasonable times and shall be preserved for a period of three years after the last entry has been made.
Regulation 16 – Segregation of oil and water ballast and carriage of oil in forepeak tanks
For ships above 400 GT other than oil tankers and oil tankers of 150 GT and above no ballast water shall be carried in any oil fuel tank.
When need to carry large quantities of oil fuel and for this purpose need to carry ballast water in fuel tanks such ballast water shall be discharged to reception facilities and an entry shall be made in the Oil Record Book.
For ships of 400 GT and above built after January 1982, shall not carry oil in fore peak tank or forward of the collision bulkhead.
Regulation 17 – Oil Record Book, Part I (Machinery space operations)
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- Every oil tanker of 150 gross tonnage and above and every ship of 400 gross tonnage and above other than an oil tanker shall be provided with an Oil Record Book Part I (Machinery space operations).
- The Oil Record Book Part I shall be completed on each occasion, on a tank-to-tank basis whenever any of the following machinery space operations takes place in the ship:
- Ballasting or cleaning of oil fuel tanks;
- Discharge of dirty ballast or cleaning water from oil fuel tanks;
- Collection and disposal of oil residues (sludge and other oil residues);
- Discharge overboard or disposal otherwise of bilge water which has accumulated in machinery spaces; and
- Bunkering of fuel or bulk lubricating oil.
- Accidental discharge and reason for that
- Each operation shall be fully recorded without delay
- Each entry shall be signed by the officer or officers in charge of the operations concerned and each completed page shall be signed by the master of the ship.
- Entries should have been made in English, French, or Spanish
- Any failure of the oil filtering equipment shall be recorded in the Oil Record Book Part I.
- The Oil Record Book Part I shall be kept in such a place as to be readily available for inspection at all reasonable times and shall be preserved for a period of three years after the last entry has been made.
