Introduction: Why MARPOL Regulations Matter for Ship Operators in Indonesia
MARPOL regulations form the principal international legal framework governing the prevention of marine pollution from ship operations. For ship operators, masters, and charterers calling at Indonesian ports, understanding MARPOL regulations is not an administrative formality but a direct determinant of operational efficiency. A single inconsistency in the Oil Record Book or Garbage Record Book can lead to detention by Port State Control, and the resulting charter loss will far exceed the cost of compliance itself.
Indonesia is the world's largest archipelagic state, with more than 17,000 islands and some of the busiest international sea lanes on the planet, including the Malacca Strait, Sunda Strait, Lombok Strait, and Makassar Strait. This density of traffic has pushed Indonesian maritime authorities to enforce marine environmental protection rules with increasing rigour. The Directorate General of Sea Transportation, together with the Harbour Master and Port Authority offices known as KSOP, routinely inspects environmental documentation on both foreign and Indonesian-flagged vessels.
This article explains the substance of MARPOL regulations, their ratification status in Indonesia, the practical shipboard obligations arising from each annex, waste delivery procedures at Indonesian ports, penalties for non-compliance, and a ready-to-use compliance checklist. Every point is written from the perspective of a ship agency that handles port calls at Indonesia's major ports every day.
What MARPOL 73/78 Is and How Indonesia Has Ratified It
MARPOL stands for the International Convention for the Prevention of Pollution from Ships, adopted by the International Maritime Organization in 1973 and subsequently modified by the Protocol of 1978, which is why it is commonly cited as MARPOL 73/78. Its central purpose is to eliminate intentional pollution of the marine environment by oil and other harmful substances, while minimising accidental discharge arising from casualties.
Unlike declaratory environmental instruments, MARPOL operates through highly concrete technical mechanisms: construction standards, discharge limits, mandatory certificates, record books, and emergency response plans. Every member state must apply these requirements to ships flying its flag under flag state control, and is entitled to inspect foreign ships calling at its ports under port state control. This is precisely why MARPOL regulations apply effectively to virtually every commercial vessel trading to Indonesia, regardless of flag.
Indonesia ratified the convention in stages. Annex I covering oil and Annex II covering noxious liquid substances in bulk were ratified through Presidential Decree Number 46 of 1986. Annexes III, IV, V, and VI were subsequently ratified through Presidential Regulation Number 29 of 2012. All six annexes therefore carry national legal force and are translated into implementing regulations. Operators should note these instruments because they establish the authority of inspectors to enforce MARPOL regulations at Indonesian ports.
The Six MARPOL Annexes and Practical Shipboard Obligations
MARPOL regulations are organised into six annexes, each addressing one category of pollutant. Understanding this structure matters because it tells the ship's team exactly which documents must be ready before arrival. The following sections set out each annex and its operational implications in Indonesian waters.
Annex I — Prevention of Pollution by Oil
Annex I governs the discharge of oil and oily mixtures from machinery spaces and, for tankers, from cargo areas. Ships must hold a valid IOPP certificate with its Supplement, operate an Oily Water Separator fitted with a 15 ppm alarm, and maintain Oil Record Book Part I for machinery space operations. Oil tankers additionally maintain Oil Record Book Part II for cargo and ballast operations. Discharge of bilge water to sea is permitted only when the oil content does not exceed 15 parts per million, the ship is en route, and the filtering equipment is functioning correctly.
Every vessel of 400 GT and above must also carry a SOPEP, the Shipboard Oil Pollution Emergency Plan, approved by the flag administration and containing an up-to-date contact list for the ports being visited. In practice, Indonesian PSC inspectors pay close attention to consistency between Oil Record Book entries, actual sludge tank soundings, and waste delivery receipts from the previous port. Discrepancies between these three sources are among the most frequently recorded deficiencies.
Annex II — Noxious Liquid Substances in Bulk
Annex II applies to chemical tankers and classifies noxious liquid substances into Categories X, Y, and Z according to the hazard they present to the marine environment. Vessels must hold an NLS Certificate or Certificate of Fitness, maintain a Cargo Record Book, and follow an approved Procedures and Arrangements Manual. Prewash operations and residue discharge must be carried out in accordance with the manual and properly recorded, usually under the supervision of an appointed surveyor.
For operators carrying chemical products to ports such as Tanjung Priok, Tanjung Perak, or dedicated terminals in Gresik and Cilegon, early coordination with the ship agent is decisive. The agent must confirm the availability of reception facilities for Category X and Y residues, since not every terminal is equipped for this and a gap in availability can force a vessel to delay departure.
Annex III — Harmful Substances in Packaged Form
Annex III regulates the carriage of harmful substances carried in packaged form and is implemented through the IMDG Code. Core obligations cover correct packing, marking and labelling, dangerous goods documentation, and stowage and segregation arrangements on board. The dangerous goods manifest must be available and must correspond to the physical condition of the cargo as presented.
At Indonesian ports, dangerous cargo requires handling approval from the port authority before cargo operations may begin. Notification is normally submitted together with the vessel's arrival documentation, so it should be prepared well in advance of arrival to avoid berthing delays that are entirely preventable.
Annex IV — Sewage
Annex IV applies to vessels of 400 GT and above, or vessels certified to carry more than 15 persons. Such ships must hold an ISPP certificate and be fitted with one of three options: an approved sewage treatment plant, a comminuting and disinfecting system, or a holding tank. Comminuted and disinfected sewage may generally be discharged beyond three nautical miles from the nearest land, while untreated sewage requires a distance beyond twelve nautical miles with the ship proceeding at a prescribed speed.
While the vessel is alongside or at anchorage, all sewage discharge to sea must cease and the overboard valve should be closed and, where required, sealed. Best practice is to record the time of valve closure in the ship's log so that compliance can be demonstrated immediately during an unannounced inspection.
Annex V — Garbage
Annex V in principle prohibits the discharge of almost all categories of garbage into the sea. Plastics are banned absolutely under any circumstances. Vessels of 100 GT and above, or carrying 15 persons or more, must have a Garbage Management Plan, a Garbage Record Book, and placards explaining the discharge requirements to all crew members.
Comminuted food waste ground to a particle size below 25 millimetres may generally be discharged beyond three nautical miles from the nearest land, while food waste that has not been comminuted requires a distance beyond twelve nautical miles. All other garbage, including operational waste and cargo residues, must be landed to shore reception facilities. In Indonesia, garbage landing is performed through licensed vendors and must be supported by an official receipt filed with the Garbage Record Book.
Annex VI — Air Pollution and Energy Efficiency
Annex VI has been the most dynamic annex of the past decade. Since 1 January 2020, the sulphur content of marine fuel used outside Emission Control Areas has been capped at 0.50 per cent mass by mass, a sharp reduction from the previous 3.50 per cent. Vessels fitted with scrubbers may continue using higher sulphur fuel provided the exhaust gas cleaning system is approved, operating correctly, and properly documented.
Annex VI further requires an IAPP certificate, a SEEMP, and retention of Bunker Delivery Notes together with sealed fuel samples for prescribed periods, typically three years for the documentation. Since 1 January 2023, the IMO has also applied the EEXI and the Carbon Intensity Indicator, obliging operators to monitor annual energy efficiency performance. Indonesia has not designated an Emission Control Area, so the 0.50 per cent global cap is the reference throughout Indonesian waters.
National Legal Basis and Port State Control Enforcement in Indonesia
MARPOL regulations are implemented domestically through Law Number 17 of 2008 on Shipping, particularly the chapter on maritime environmental protection. The law prohibits any vessel from discharging waste, ballast water, sewage, or garbage into Indonesian waters other than at designated locations and by prescribed methods. Implementing provisions appear in Government Regulation Number 21 of 2010 on Maritime Environmental Protection, which covers the obligation to provide port reception facilities and the procedures for pollution response.
On the enforcement side, Indonesia is a member of the Tokyo MOU on Port State Control. Foreign vessels calling at Indonesian ports may therefore be inspected using a regionally harmonised format, with results recorded in a regional database that shapes the vessel's risk profile for subsequent calls. Inspectors verify the completeness of MARPOL certificates, the consistency of record book entries, the condition of equipment such as the OWS and incinerator, and evidence of waste delivery ashore.
Field experience shows that MARPOL deficiencies rarely originate from defective equipment. The majority arise from administration: record book entries left unsigned by the master, missing waste receipts, or unexplained variances in sludge volume. Daily recording discipline therefore determines inspection outcomes far more than technical condition alone. Our PKKA and port clearance team routinely pre-checks documentation before berthing to eliminate findings of this kind.
Port Reception Facilities and Waste Delivery Procedures in Indonesia
Compliance with MARPOL regulations does not end on board, because ships still depend on shore-side reception facilities. Indonesia's major ports, including Tanjung Priok in Jakarta, Tanjung Perak in Surabaya, Belawan in Medan, Balikpapan, Makassar, and Batam, generally host licensed waste reception providers. Oily waste, sludge, slops, and used lubricating oil are classified as hazardous and toxic waste, so handling must be performed by transporters and processors holding permits from the relevant ministry.
The standard workflow begins with a written request from the master to the ship agent stating the waste type, estimated volume, and preferred delivery window. The agent then notifies the local KSOP and books a slot with a licensed vendor, using either a receiving barge or vacuum trucks at the berth. Once the transfer is complete, the vessel receives a Waste Delivery Receipt stating volume, waste category, the transporter's permit number, and signatures from both parties.
That receipt becomes the primary evidence of compliance at the next inspection, so copies must be retained on board and cross-referenced in the relevant record book. In terms of timing, the ideal practice is to submit the waste delivery request at least 48 to 72 hours before arrival, particularly at congested ports. Last-minute requests usually attract premium charges and risk holding the vessel outside its scheduled window. This coordination forms part of the maritime logistics services we arrange alongside other port call requirements.
Penalties and Commercial Risk of MARPOL Non-Compliance
Breaching marine pollution provisions in Indonesia carries serious legal consequences. Law Number 17 of 2008 provides for imprisonment and fines for parties who discharge waste or pollutants into Indonesian waters outside the permitted conditions. Beyond criminal liability, authorities may impose administrative sanctions ranging from formal warnings to suspension or revocation of business licences for the entities involved.
The commercial exposure is often greater than the formal penalty. A vessel detained over a MARPOL finding may lose its berthing window, incur demurrage, and face claims from charterers. In the event of an oil spill, response, clean-up, and environmental compensation costs can reach very substantial figures and may trigger disputes with insurers. The operator's standing in the regional PSC database also deteriorates, which translates into more frequent inspections at future calls.
Compliance spending should therefore be treated as risk management rather than overhead. Routine sludge landing, crew training on record keeping, and periodic internal audits cost a small fraction of a single detention at a foreign port. Shore-side support services help ensure these requirements are met on schedule at every call.
MARPOL Compliance Checklist Before Arriving in Indonesia
To make preparation straightforward for operational teams, the following steps are recommended before the vessel enters Indonesian waters. The list reflects the deficiencies most frequently observed during inspections at the country's principal ports.
First, verify the validity of every environmental certificate, namely the IOPP with its Supplement, the ISPP, the IAPP, and Annex II certification where relevant, and confirm that no survey endorsement has been missed. Second, check that the Oil Record Book, Garbage Record Book, and Cargo Record Book are complete and countersigned, and that the last entries reconcile with current tank conditions. Third, ensure copies of Waste Delivery Receipts from the previous port are filed and immediately producible.
Fourth, function-test key equipment including the Oily Water Separator with its 15 ppm alarm, the incinerator, and the sewage treatment plant, and document the results. Fifth, confirm the sulphur content of fuel in use through the Bunker Delivery Notes and ensure sealed samples are retained as required. Sixth, advise the ship agent of estimated sludge, slop, and garbage volumes at least two to three days before arrival so reception capacity can be secured early, together with any crew change services required during the same port call.
FAQ
Q: Do all MARPOL annexes apply in Indonesia?
A: Yes. Indonesia ratified Annexes I and II through Presidential Decree Number 46 of 1986, and Annexes III, IV, V, and VI through Presidential Regulation Number 29 of 2012. All six annexes therefore have national legal force and may be enforced by inspectors at Indonesian ports against both Indonesian-flagged and foreign vessels.
Q: What sulphur limit applies to fuel used in Indonesian waters?
A: The global cap of 0.50 per cent mass by mass applies throughout Indonesian waters because Indonesia has not designated an Emission Control Area. Vessels burning higher sulphur fuel must operate an approved exhaust gas cleaning system. Bunker Delivery Notes and sealed samples must be available as evidence of compliance during inspection.
Q: May a vessel discharge food waste while at anchor in an Indonesian port?
A: No. While the vessel is alongside or at anchorage, all discharge of garbage including food waste into the water is prohibited. Food waste may only be discharged while the vessel is en route at the prescribed distance from the nearest land, and all other garbage must be landed to licensed shore reception facilities.
Q: How long does sludge delivery take at a major port such as Tanjung Priok?
A: The transfer itself normally takes a few hours depending on volume and the method used. However, slot booking and authority notification should be arranged 48 to 72 hours before arrival. Short-notice requests can often still be accommodated but usually involve additional cost and a risk of schedule disruption.
Conclusion
MARPOL regulations place the responsibility for preventing marine pollution directly on operators and crews through six annexes covering oil, noxious liquid substances, packaged dangerous goods, sewage, garbage, and air emissions. In Indonesia, all six annexes have been ratified and are enforced through the Shipping Law and maritime environmental protection regulations, with Port State Control oversight conducted within the Tokyo MOU framework. Compliance is less about equipment than about documentation discipline and disciplined waste delivery planning.
Operators who keep certificates, record books, and waste receipts consistently in order pass inspections smoothly and avoid entirely preventable detention costs. The practical formula is simple: record every operation on the day it occurs, retain proof of waste delivery, and involve the ship agent early so that reception facilities at the destination port are confirmed before arrival. Nusantika supports this process at Tanjung Priok, Tanjung Perak, Belawan, Balikpapan, Makassar, Batam, Bitung, Pontianak, and Semarang with round-the-clock coverage.
Butuh bantuan crew change di Indonesia? Hubungi Nusantika via WhatsApp — kami siap 24/7.