| Resolution |
Revision |
Adoption Date |
Title |
Implementation Date |
| UR M74 |
Rev.3 |
Mar. 2025 |
Ballast Water Management Systems |
1 Jan. 2027 |
| UR F45 |
Rev.1 |
Mar. 2025 |
Installation of BWMS on-board ships |
1 Jan. 2027 |
| UR F44 |
Rev.3 Corr.1 |
March 2025 |
Fore peak ballast tanks and space arrangements on oil & chemical tankers |
--- |
| UR W7 |
Rev.5 |
Feb. 2025 |
Hull and machinery steel forgings |
1 Jan. 2027 |
| UR Z11 |
Rev.7 |
Feb. 2025 |
Mandatory Ship Type and Enhanced Survey Programme (ESP) Notations |
1 Jan. 2027 |
| UR E15 |
Rev.5 |
Jan. 2025 |
Electrical Services Required to be Operable Under Fire Conditions and Fire Resistant Cables |
1 Jul. 2026 |
| UR F43 |
Del |
Jan. 2025 |
Installation requirements for analysing units for continuous monitoring of flammable vapours |
--- |
| UR W35 |
Rev.2 |
Feb. 2025 |
Requirements for NDT Service Suppliers |
1 Jan. 2027 |
| UR W10 |
Rev.3 |
Feb. 2025 |
Spheroidal graphite iron castings or ductile iron castings |
1 Jan. 2027 |
| UR W9 |
Rev.3 |
Feb. 2025 |
Grey iron castings or flake graphite iron castings |
1 Jan. 2027 |
| UR Z15 |
Rev.4 |
Jan. 2025 |
Hull, Structure, Equipment and Machinery Surveys of Mobile Offshore Units |
1 Jul. 2026 |
| UR M25 |
Rev.5 |
Dec. 2024 |
Astern power for main propulsion |
1 Jan. 2026 |
| UR I3 |
Rev.2 Corr.1 |
Dec. 2024 |
Machinery Requirements for Polar Class Ships |
--- |
| UR Z17 |
Rev.21 |
Jan. 2025 |
Procedural Requirements for Service Suppliers |
1 Jul. 2026 |
| UR Z17 |
Rev.20 |
Nov. 2024 |
Procedural Requirements for Service Suppliers |
1 Jan. 2026 |
| UR W27 |
Rev.3 Corr.1 |
Dec. 2024 |
Cast Steel Propellers |
--- |
| UR W24 |
Rev.5 Corr.1 |
Dec. 2024 |
Cast Copper Alloy Propellers |
--- |
| UR M86 |
New |
Nov. 2024 |
Monitoring and Safety Functions for Exhaust Gas Cleaning (SOx) Systems |
1 Jan. 2026 |
| UR M10 |
Rev.5 |
Nov. 2024 |
Protection of internal combustion engines against crankcase explosions |
1 Jan. 2026 |
| UR H1 |
New (Withdrawn) |
Jan. 2024 |
Control of Ammonia releases in Ammonia fuelled vessels |
Withdrawn in November 2024 |
| UR M85 |
New |
Nov. 2024 |
Type approval testing of synthetic materials for aftmost propeller shaft bearings |
1 Jan. 2026 |
| UR M52 |
Rev.3 |
Nov. 2024 |
Length of aftmost propeller shaft bearing |
1 Jan. 2026 |
| UR Z17 |
Rev.19 |
Oct. 2024 |
Procedural Requirements for Service Suppliers |
1 Jan. 2026 |
| UR P4 |
Rev.8 |
Sep. 2024 |
Production and Application of Plastic Piping Systems on Ships |
1 Jan. 2026 |
| UR S35 |
Corr.1 |
Sep. 2024 |
Buckling Strength Assessment of Ship Structural Elements |
--- |
| UR Z1 |
Rev.10 |
Sep. 2024 |
Annual and intermediate classification survey coverage of IMO Resolution A.1186(33) |
--- |
| UR M46 |
Rev.4 |
Aug. 2024 |
Ambient conditions – Inclinations and Ship Accelerations and Motions |
1 Jan. 2026 |
| UR E10 |
Rev.10 |
Aug. 2024 |
Test Specification for Type Approval |
1 Jan. 2026 |
| UR F44 |
Rev.3 |
Sep. 2024 |
Fore peak ballast tanks and space arrangements on oil & chemical tankers |
1 Jan. 2026 |
| UR Z7.1 |
Rev.15 Corr.1 |
May 2024 |
Hull Surveys for General Dry Cargo Ships |
--- |
| UR Z7 |
Rev.29 Corr.1 |
May 2024 |
Hull Classification Surveys |
--- |
| UR S10 |
Rev.7 Corr.2 |
May 2024 |
Rudders, Sole Pieces and Rudder Horns |
--- |
| UR C7 |
New |
May 2024 |
Approval and Certification of Container Securing Systems |
1 Jul. 2025 |
| UR C6 |
New |
May 2024 |
Requirements for Lashing Software |
1 Jul. 2025 |
| UR W8 |
Rev.4 |
Mar. 2024 |
Hull and machinery steel castings |
1 Jan. 2025 |
| UR E21 |
Rev.2 |
Feb. 2024 |
Requirements for uninterruptible power system (UPS) units |
1 Jul. 2025 |
| UR M61 |
Rev.3 |
Feb. 2024 |
Starting Arrangements of Internal Combustion Engines |
1 Jul. 2025 |
| UR M84 |
New |
Feb. 2024 |
Capacity and availability of compressed air for essential services |
1 Jul. 2025 |
| UR M47 |
Del. |
Feb. 2024 |
Bridge control of propulsion machinery for attended machinery spaces |
--- |
| UR M43 |
Rev.1 |
Feb. 2024 |
Bridge control of propulsion machinery |
1 Jan. 2025 |
| UR M3 |
Rev.7 |
Feb. 2024 |
Speed governor and overspeed protective device |
1 Jan. 2025 |
| UR M78 |
Rev.2 |
Jan. 2024 |
Reciprocating Internal Combustion Engines Fuelled by Natural Gas |
1 Jan. 2025 |
| UR G3 |
Rev.8 |
Oct. 2023 |
Liquefied gas cargo and process piping |
1 January 2025 |
| UR L2 |
Rev.3 |
Nov. 2023 |
Intact stability – matter of class |
1 Jan. 2025 |
| UR F42 |
Del. |
Nov. 2023 |
Fire testing of flexible pipes |
--- |
| UR E26 |
Rev.1 |
Nov. 2023 |
Cyber resilience of ships |
1 July 2024 |
| UR W35 |
Rev.1 |
Oct. 2023 |
Requirements for NDT Service Suppliers |
1 Jan. 2025 |
| UR G1 |
Rev.3 Corr.3 |
Sep. 2023 |
Vessels with cargo containment system for liquefied gas |
--- |
| UR F15 |
Rev.7 |
Sep. 2023 |
Reinforced thickness of ballast and cargo oil piping |
1 January 2025 |
| UR W27 |
Rev.3 |
Sep. 2023 |
Cast Steel Propellers |
1 Jan. 2025 |
| UR W24 |
Rev.5 |
Sep. 2023 |
Cast Copper Alloy Propellers |
1 Jan. 2025 |
| UR E27 |
Rev.1 |
Sep. 2023 |
Cyber resilience of on-board systems and equipment |
1 July 2024 |
| UR M24 |
Rev.2 |
Aug. 2023 |
Requirements concerning use of crude oil or slops as fuel for tanker boilers |
1 January 2025 |
| UR M61 |
Rev.2 |
Aug. 2023 |
Starting Arrangements of Internal Combustion Engines |
1 January 2025 |
| UR E10 |
Rev.9 |
Aug. 2023 |
Test Specification for Type Approval |
1 July 2024 |
| UR M46 |
Rev.3 |
Aug. 2023 |
Ambient conditions – Inclinations and Ship Accelerations and Motions |
1 January 2025 |
| UR Z10.3 |
Rev.21 |
Aug. 2023 |
Hull Surveys of Chemical Tankers |
1 July 2024 |
| UR M81 |
Rev. 1 |
July 2023 |
Safety measures against chemical treatment fluids used for exhaust gas cleaning systems and the residues which have hazardous properties |
1 July 2024 |
| UR E22 |
Rev.3 |
June 2023 |
Computer-based systems |
1 July 2024 |
| UR S10 |
Rev.7 Corr.1 |
Jun. 2023 |
Rudders, sole pieces and rudder horns |
--- |
| UR S3 |
Rev.2 |
Jun. 2023 |
Strength of end bulkheads of superstructures and deckhouses |
1 Jul. 2024 |
| UR A1 |
Rev.8 |
Jun. 2023 |
Anchoring Equipment |
1 Jul. 2024 |
| UR M53 |
Rev.5 |
May 2023 |
Calculations for I.C. Engine Crankshafts |
1 Jul. 2024 |
| UR M73 |
Rev.2 |
May 2023 |
Turbochargers |
1 Jul. 2024 |
| UR Z11 |
Rev.6 |
May 2023 |
Mandatory Ship Type and Enhanced Survey Programme (ESP) Notations |
1 Jul. 2024 |
| UR Z17 |
Rev.18 Corr.1 |
May 2023 |
Procedural Requirements for Service Suppliers |
--- |
| UR Z23 |
Rev.7 Corr.2 |
May 2023 |
Hull Survey for New Construction |
--- |
| UR S26 |
Rev.5 |
May 2023 |
Strength and Securing of Small Hatches on the Exposed Fore Deck |
1 Jul. 2024 |
| UR G2 |
Rev.3 |
May 2023 |
Liquefied gas cargo tanks and process pressure vessels |
1 Jul. 2024 |
| UR M72 |
Rev.3 |
Apr. 2023 |
Certification of Engine Components |
1 Jul. 2024 |
| UR M56 |
Rev.4 Corr.2 |
Mar. 2023 |
Marine gears – load capacity of involute parallel axis spur and helical gears |
--- |
| UR Z10.5 |
Rev.20 |
Feb. 2023 |
Hull Surveys of Double Skin Bulk Carriers |
1 Jul. 2024 |
| UR Z10.4 |
Rev.18 |
Feb. 2023 |
Hull Surveys of Double Hull Oil Tankers |
1 Jul. 2024 |
| UR Z10.2 |
Rev.37 |
Feb. 2023 |
Hull Surveys of Bulk Carriers |
1 Jul. 2024 |
| UR Z10.1 |
Rev.25 |
Feb. 2023 |
Hull Surveys of Oil Tankers |
1 Jul. 2024 |
| UR M82 |
New |
Mar. 2023 |
Type Testing Procedure of Explosion Relief Devices for Combustion Air Inlet and Exhaust Gas Manifolds of I.C. Engines Using Gas as Fuel |
Jul. 2024 |
| UR W31 |
Rev.3 |
Mar. 2023 |
YP47 Steels and Brittle Crack Arrest Steels |
1 Jul. 2024 |
| UR Z17 |
Rev.18 |
Feb. 2023 |
Procedural Requirements for Service Suppliers |
Jul. 2023 |
| UR S10 |
Rev.7 |
Feb. 2023 |
Rudders, sole pieces and rudder horns |
1 Jul. 2024 |
| UR M77 |
Rev.4 |
Feb. 2023 |
Storage and use of SCR reductants |
Jan. 2024 |
| UR I3 |
Rev.2 |
Jan. 2023 |
Machinery Requirements for Polar Class Ships |
Jul. 2024 |
| UR M31 |
Del. |
Jan. 2023 |
Continuity of electrical power supply for vessels with periodically unattended machinery spaces |
--- |
| UR M63 |
Rev.1 |
Jan. 2023 |
Alarms and safeguards for emergency internal combustion (I.C.) engines |
Jan. 2024 |
| UR S35 |
New |
Feb. 2023 |
Buckling Strength Assessment of Ship Structural Elements |
1 Jul. 2024 |
| UR S21A |
Del. |
Jan. 2023 |
Evaluation of Scantlings of Hatch Covers and Hatch Coamings and Closing Arrangements of Cargo Holds of Ships |
1 Jul. 2024 |
| UR S21 |
Rev.6 |
Jan. 2023 |
Evaluation of Scantlings of Hatch Covers and Hatch Coamings and Closing Arrangements of Cargo Holds of Ships |
1 Jul. 2024 |
| Resolution |
Revision |
Adoption Date |
Title |
Implementation Date |
| UI GF22 |
New |
Mar. 2025 |
Gas Fuel Vent Pipes – Single walled construction in Machinery spaces |
1 Jul. 2026 |
| UI SC89 |
Rev.5 (Withdrawn) |
Dec. 2024 |
Ventilation of Cargo Spaces |
Withdrawn in December 2024 |
| UI SC305 |
New |
Dec. 2024 |
Single essential propulsion components and their reliability |
1 Jan. 2026 |
| UI SC191 |
Rev.9 |
Nov. 2024 |
IACS Unified Interpretations (UI) SC 191 for the application of amended SOLAS regulation II-1/3-6 (resolution MSC.151(78)) and revised Technical provisions for means of access for inspections (resolution MSC.158(78)) |
1 Jul. 2025 |
| UI SC190 |
Rev.2 |
Nov. 2024 |
IACS Unified Interpretations (UI) SC 190 for Application of SOLAS Regulation II-1/3-6 (Res MSC.134(76)) and Technical Provisions on Permanent Means of Access (Res MSC.133(76)) |
1 Jul. 2025 |
| UI SC307 |
New |
Nov. 2024 |
Hydrocarbon Gas Detection and Bilge High Level Alarms in Cargo Pump-Rooms |
1 Jan. 2026 |
| UI SC306 |
New |
Nov. 2024 |
Valve piercing ship’s collision bulkhead |
1 Jan. 2026 |
| UI SC269 |
Rev.2 |
Nov. 2024 |
Means of escape from the steering gear space in cargo ships |
1 Jan. 2026 |
| UI SC11 |
Rev.2 |
Nov. 2024 |
Precautions against shock, fire and other hazards of electrical origin |
1 Jan. 2026 |
| UI SC5 |
Del |
Nov. 2024 |
Emergency source of electrical power in passenger ships |
--- |
| UI SC4 |
Del |
Nov. 2024 |
Emergency source of electrical power |
--- |
| UI GF21 |
New |
Oct. 2024 |
CO2 fire extinguishing systems in methyl/ethyl alcohol fuelled vessels machinery spaces |
1 Jan. 2026 |
| UI SC259 |
Rev.1 Corr.2 |
Oct. 2024 |
For Application of SOLAS Regulation II-1/3-11 Performance Standard for Protective Coatings for Cargo Oil Tanks of Crude Oil Tankers (PSPC-COT), adopted by Resolution MSC.288(87) |
--- |
| UI SC304 |
New |
Oct. 2024 |
Code on noise levels onboard ships - calibration of sound instruments |
1 Jul. 2026 |
| UI SC99 |
Rev.2 Corr.1 |
Sep. 2024 |
Flexible bellows of combustible materials |
--- |
| UI SC211 |
Rev.1 |
Sep. 2024 |
Protection of fuel oil tanks and designation of fore peak spaces |
1 Jan. 2026 |
| UI MPC131 |
New |
Jul. 2024 |
Unified Interpretation on the application of the amendments to Appendix IX of MARPOL Annex VI adopted by MEPC.385(81) |
1 Nov. 2024 |
| UI SC303 |
New |
Jul. 2024 |
Harmonization of Industrial Personnel Safety Certificate with SOLAS Safety Certificates |
1 Jul. 2025 |
| UI SC156 |
Rev.3 |
Jul. 2024 |
Doors in watertight bulkheads of cargo ships and passenger ships |
1 Jul. 2025 |
| UI GF20 |
New |
Jun. 2024 |
Arrangements of fuel tanks in methyl/ethyl alcohol fuelled vessels |
1 Jul. 2025 |
| UI SC302 |
New |
May 2024 |
Interpretation of SOLAS Regulation II-2/11.4.1 Pertaining to Crowns of Machinery Spaces of Category A
|
1 Jul. 2025 |
| UI LL62 |
Rev.1 Corr.2 |
Jun. 2024 |
Side Scuttles, Windows and Skylights |
--- |
| UI SC277 |
Rev.1 |
May 2024 |
Escape from machinery spaces on cargo ships |
1 Jul. 2025 |
| UI SC276 |
Rev.1 |
May 2024 |
Escape from machinery spaces on passenger ships |
1 Jul. 2025 |
| UI SC301 |
New |
May 2024 |
SOLAS Regulations II-2/9.7.2 and 9.7.5.1 – Separation of ducts from spaces |
1 Jul. 2025 |
| UI SC266 |
Del. |
Feb. 2024 |
Revised guidelines for cargo securing manual and code of safe practice for cargo stowage and securing– scope of application |
--- |
| UR M83 |
New |
Oct. 2023 |
Testing of the control system of controllable pitch propellers intended for main propulsion |
1 Jan. 2025 |
| UI GF19 |
New |
Dec. 2023 |
Fuel Supply to Consumers – single common flanges |
1 Jul. 2024 |
| UI SC249 |
Rev.2 |
Jan. 2024 |
Implementation of SOLAS II-1, Regulation 3-5 and MSC.1/Circ.1379 |
1 Jan. 2025 |
| UI MPC29 |
Rev.2 |
Dec. 2023 |
Annex VI of MARPOL 73/78 |
1 Jul. 2024 |
| UI MPC12 |
Rev.3 Corr.2 |
Dec. 2023 |
Annex VI of MARPOL 73/78 |
--- |
| UI SC264 |
New Corr.1 |
Dec. 2023 |
Non-combustible material as ‘steel or equivalent’ for ventilation ducts (SOLAS II-2/Reg. 9.7.1.1) |
--- |
| UI SC298 |
New Corr.1 |
Nov. 2023 |
Interpretations of various Performance Standards related to GMDSS radio installations |
--- |
| UI SC265 |
Del. |
Nov. 2023 |
Code of safe practice for cargo stowage and securing – Annex 14 |
--- |
| UI SC212 |
Rev.1 |
Nov. 2023 |
Shipboard fittings and supporting hull structures associated with towing and mooring on conventional vessels (SOLAS regulation II-1/3-8) |
1 Jan. 2024 |
| UI SC120 |
Rev.2 Corr.2 |
Oct. 2023 |
Access to forecastle spaces on tankers
|
--- |
| UI GC39 |
New |
Sep. 2023 |
Interpretation of 2014 IGC Code (MSC.370(93), as amended) Paragraphs 11.3.1 11.4.1, 11.4.3 and 18.10.3.2 w.r.t additional bunkering manifold equipment fitted on L.N.G. Bunkering Ships |
1 Jul. 2024 |
| UI SC300 |
New |
Aug. 2023 |
Containment of fire: details of fire insulation of duct penetrations |
1 Jul. 2024 |
| UI SC123 |
Rev.5 |
Jul. 2023 |
Machinery Installations - Service Tank Arrangements |
1 July 2024 |
| UI GC13 |
Rev.3 |
Aug. 2023 |
Verifications before and after the first loaded voyage |
1 January 2024 |
| UI SC299 |
New |
Jul. 2023 |
Watertight testing after fire testing of penetrations in watertight divisions in passenger ships |
1 Jul. 2024 |
| UI GF13 |
Rev.1 |
May. 2023 |
Fire protection of spaces containing equipment for the fuel preparation |
1 Jan. 2024 |
| UI MPC125 |
Rev.1 |
May. 2023 |
Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 4, Paragraph 4.4.6.1) |
1 Jan. 2024 |
| UI SC70 |
Rev.4 Corr.1 |
Apr. 2023 |
Cargo tank vent systems and selection of electrical equipment |
--- |
| UI SC121 |
Rev.2 Corr.1 |
Apr. 2023 |
Fire Pump Isolation Requirements |
--- |
| UI SC30 |
Rev.3 |
Mar. 2023 |
Fire-extinguishing arrangements in machinery spaces |
--- |
| UI SC138 |
New Corr.1 |
Feb. 2023 |
Safe Access to Tanker Bows |
--- |
| UI SC245 |
Rev.1 |
Jan. 2023 |
Suction and discharge piping of emergency fire pumps, which are run through the machinery space |
Jan. 2023 |
| UI SC121 |
Rev.2 |
Jan. 2023 |
Fire Pump Isolation Requirements |
Jan. 2023 |
| UI LL16 |
Rev.2 |
Jan. 2023 |
Sheer |
--- |
| UI SC120 |
Rev.2 Corr.1 |
Jan. 2023 |
Access to forecastle spaces on tankers |
--- |
| UI SC127 |
Rev.2 Corr.1 |
Jan. 2023 |
Paints, varnishes and other finishes |
--- |
