Key IMO Regulatory Updates Entering into Force (2025)
IMSBC Code Amendments (07-23) — MSC.539(107)
Amendments to the International Maritime Solid Bulk Cargoes (IMSBC) Code, applied voluntarily since 1 January 2024, will become mandatory on 1 January 2025.
A key update requires shippers to declare the bulk density of cargo in accordance with SOLAS regulation XII/10 (MSC.1/Circ.1664), supporting improved cargo planning and vessel safety.
STCW Amendments — Electronic Seafarers’ Certificates
MSC.540(107) & MSC.541(107)
To support global digitalisation, amendments to the STCW Convention (regulations I/1 and I/2) and STCW Code (section A-I/2) now allow seafarer certificates to be issued electronically. The amendments also define the minimum information required on electronic certificates.
Guidance is provided in MSC.1/Circ.1665.
MARPOL Annex I — Red Sea & Gulf of Aden Special Areas
MEPC.381(80) — Effective 1 January 2025
The Red Sea and Gulf of Aden are now designated Special Areas under MARPOL Annex I following confirmation that adequate reception facilities are available across coastal States.
From this date, discharge of oil or oily mixtures from ships 400 GT and above is prohibited within these regions, except where strict conditions are met, including:
- Ship is en route
- Oil filtering equipment meets regulatory requirements
- Effluent oil content does not exceed 15 ppm
- Discharge does not originate from cargo pump room bilges (tankers)
- Mixture is not combined with cargo residues
Discharges from cargo areas of oil tankers are prohibited, except for clean or segregated ballast.
MARPOL Annex V — Red Sea Garbage Special Area
MEPC.382(80) — Effective 1 February 2025
The Red Sea has been confirmed as a Special Area under MARPOL Annex V. Discharge of garbage is restricted and permitted only while the vessel is en route and in accordance with Regulation 6 requirements.
BWM Convention — Ballast Water Record Book (BWRB) Update
MEPC.369(80) — Effective 1 February 2025
Appendix II of the BWM Convention has been revised to improve clarity and consistency of Ballast Water Record Book entries, following frequent PSC deficiencies.
Ships are required to adopt the updated BWRB format. Guidance is provided in BWM.2/Circ.80.
Mediterranean Sea Emission Control Area (ECA)
MARPOL Annex VI — MEPC.361(79)
Effective 1 May 2025
The Mediterranean Sea becomes an Emission Control Area (ECA) for SOx and particulate matter. Ships must:
- Use fuel with sulphur content ≤ 0.10% m/m, or
- Operate an approved exhaust gas cleaning system (EGCS)
Hong Kong Convention on Ship Recycling
MEPC.210(63) — Effective 26 June 2025 / 1 August 2025
The Hong Kong Convention applies to ships over 500 GT engaged in international voyages and aims to ensure safe and environmentally sound ship recycling.
Key requirements include:
- Inventory of Hazardous Materials (IHM) required for new ships from 26 June 2025
- Existing ships must comply by 26 June 2030
- Material Declarations (MD) and Supplier Declarations of Conformity (SDoC) required for supplied equipment
- Surveys required throughout operational life and prior to recycling
- Recycling permitted only at HKC-compliant facilities
MARPOL Annex VI — Fuel, Engine & IMO DCS Updates
MEPC.385(81) — Effective 1 October 2025
Key changes include:
- Revised definition of gas and low-flashpoint fuels aligned with the IGF Code
- Bunker Delivery Note (BDN) requirements extended to gas fuels
- Replacement of steam systems with marine diesel engines classified as a major conversion
- Expanded IMO DCS reporting requirements including:
- Onshore power supplied
- Transport work
- Innovative technology installation
- Laden distance travelled (voluntary)
Ships ≥5,000 GT should update SEEMP Part II accordingly.
BWM Convention — Electronic Record Books
MEPC.383(81)
Amendments permit the Ballast Water Record Book to be maintained electronically, aligning with MARPOL and NOx Technical Code approaches. Guidance is provided in MEPC.372(80).