ClassNK

IACS Unified Requirement and Unified Interpretation

This page provides the text of newly established IACS Unified Requirements (UR) and Unified Interpretations (UI) as well as their most recent revisions and corrigenda. Recent revisions and changes have been underlined for easy reference.
Texts of the IACS Unified Requirements and Unified Interpretations are made available on this page for the period of one year following the date of adoption. Texts of all current UR/UI can be found on the IACS website (http://www.iacs.org.uk).

IACS Unified Requirements

IACS Unified Requirements are the minimum class requirements shared among all IACS Member Societies. Unless an application date is specified, Unified Requirements are to be incorporated in the Rules and practices of each IACS Member Society within one year of their adoption by IACS.

IACS Unified Interpretations

IACS Unified Interpretations were created with a view to the uniform implementation of IMO conventions among all IACS Member Societies and provide interpretations of IMO Conventions which are vaguely worded or have been left to the satisfaction of each Administration.

The outlines of technical resolutions adopted by IACS are available at the links shown below.

• IACS Technical Resolutions adopted from January to December 2018
• IACS Technical Resolutions adopted from January to December 2017
• IACS Technical Resolutions adopted from July to December 2016
• IACS Technical Resolutions adopted from January to June 2016
• IACS Technical Resolutions adopted from July to December 2015
• IACS Technical Resolutions adopted from January to June 2015
• IACS Technical Resolutions adopted from July to December 2014
• IACS Technical Resolutions adopted from January to June 2014
• IACS Technical Resolutions adopted from July to December 2013
• IACS Technical Resolutions adopted from January to June 2013
• IACS Technical Resolutions adopted from July to December 2012

Implementation Dates

The Implementation dates of the Unified Requirements (UR) and Unified Interpretations (UI) are shown in the "Implementation Date" column of the tables. However, as each UR / UI has its own implementation scheme, e.g. contract basis, keel laying basis, etc. please confirm the implementation dates included in the texts.

Unified Requirements and Unified Interpretations will be incorporated into the ClassNK Rules / Guidance and apply to ships classed with ClassNK.

UR Abbreviations

A :	Mooring, Anchoring and Towing	C :	Containers	D :	Mobile Offshore Drilling Units
E :	Electrical Installations	F :	Fire Protection	G :	Gas Tankers
I :	Polar Class	K :	Propellers	L :	Load Line
M :	Machinery Installations	N :	Navigation	P :	Pipes and Pressure Vessels
S :	Strength of Ships	W :	Materials and Welding	Z :	Survey and Certification

UI Abbreviations

CC :	IBC Code / BCH Code	COLREG :	COLREG	FTP :	FTP Code
GC :	IGC Code / GC Code	HSC :	HSC Code	LL :	Load Line
MPC :	MARPOL	PASSUB :	Passenger Submersible Craft
SC :	SOLAS	TM :	Tonnage Measurement

IACS Unified Requirement

Resolution	Revision	Adoption Date	Title	Implementation Date
UR W34	New	Dec. 2019	Advanced non-destructive testing of materials and welds	1 Jul. 2021
UR I2	Rev.4	Dec. 2019	Structural Requirements for Polar Class Ships	1 Jan. 2021
UR W33	New	Dec. 2019	Non-destructive testing of ship hull steel welds	1 Jul. 2021
UR G3	Rev.7	Dec. 2019	Liquefied gas cargo and process piping	Jan. 2021
UR E25	Rev. 1	Dec. 2019	Failure detection and response of all types of steering control systems	1 Jan. 2021
UR S33	Rev.2	Dec. 2019	Requirements for Use of Extremely Thick Steel Plates in Container Ships	1 Jan. 2021
UR W31	Rev.2	Dec. 2019	YP47 Steels and Brittle Crack Arrest Steels	1 Jan. 2021
UR M52	Rev. 2	Nov. 2019	Length of aft stern bush bearing	1 Jan. 2021
UR S10	Rev.6	Sep. 2019	Rudders, sole pieces and rudder horns	1 Jan. 2021
UR M77	Rev.1	Aug. 2019	Storage and use of SCR reductants	1 Jan. 2021
UR M53	Rev.4	Aug. 2019	Calculations for I.C. Engine Crankshafts	1 Jan. 2021
UR W35	New	Jun. 2019	Requirements for NDT Suppliers	1 Jul. 2020
UR S11	Rev.9	Jun. 2019	Longitudinal Strength Standard	1 Jul. 2020
UR S5	Corr.1	Jun. 2019	Calculation of midship section moduli for conventional ship for ship's scantlings	---
UR S2	Rev.2	Jun. 2019	Definition of ship’s length L and of block coefficient Cb	1 Jul. 2020
UR Z1	Rev.7	May 2019	Annual and intermediate classification survey coverage of IMO Resolution A.1120(30)	---
UR Z20	Rev.2	May 2019	Planned Maintenance Scheme (PMS) for Machinery	1 Jul. 2020
UR Z15	Rev.3	May 2019	Hull, Structure, Equipment and Machinery Surveys of Mobile Offshore Drilling Units	1 Jul. 2020
UR Z10.5	Rev.19	May 2019	Hull Surveys of Double Skin Bulk Carriers	1 Jul. 2020
UR Z10.4	Rev.16	May 2019	Hull Surveys of Double Hull Oil Tankers	1 Jul. 2020
UR Z10.3	Rev.19	May 2019	Hull Surveys of Chemical Tanker	1 Jul. 2020
UR Z10.2	Rev.36	May 2019	Hull Surveys of Bulk Carriers	1 Jul. 2020
UR Z10.1	Rev.24	May 2019	Hull Surveys of Oil Tankers	1 Jul. 2020
UR Z7.2	Rev.8	May 2019	Hull Surveys for Liquefied Gas Carriers	1 Jul. 2020
UR Z7.1	Rev.15	Jun. 2019	Hull Surveys for General Dry Cargo Ships	1 Jul. 2020
UR Z7	Rev.28	May 2019	Hull Classification Surveys	1 Jul. 2020
UR A3	Rev. 1	Jun. 2019	Anchor Windlass Design and Testing	1 Jul. 2020
UR M80	New	May. 2019	Requirements for the AC Generating sets	1 Jul. 2020
UR Z3	Rev.8	Apr. 2019	Periodical Survey of the Outside of the Ship’s Bottom and Related Items	1 Jul. 2020
UR Z17	Rev.14	Mar. 2019	Procedural Requirements for Service Suppliers	1 Jan. 2020
UR S30	Corr.1	Mar. 2019	Cargo Hatch Cover Securing Arrangements for Bulk Carriers not Built in accordance with UR S21 (Rev.3)	---
UR S21A	Corr.2	Mar. 2019	Evaluation of Scantlings of Hatch Covers and Hatch Coamings and Closing Arrangements of Cargo Holds of Ships	---
UR S18	Rev.10	Mar. 2019	Evaluation of Scantlings of Corrugated Transverse Watertight Bulkheads in Non-CSR Bulk Carriers Considering Hold Flooding	1 Jul. 2020
UR S17	Rev.10	Mar. 2019	Longitudinal Strength of Hull Girder in Flooded Condition for Non-CSR Bulk Carriers	1 Jul. 2020
UR M72	Rev.2	Jan. 2019	Certification of Engine Components	1 Jan. 2019
UR M52	Rev.1	Jan. 2019	Length of aft stern bush bearing	1 Jan. 2020

 

IACS Unified Interpretation

Resolution	Revision	Adoption Date	Title	Implementation Date
UI SC242	Rev. 2	Jan. 2020	Arrangements for steering capability and function on ships fitted with propulsion and steering systems other than traditional arrangements for a ship’s directional control	1 Jul. 2020
UI GC25	Corr. 1	Dec. 2019	Cargo piping insulation	---
UI GC26	Corr. 1	Dec. 2019	Type testing requirements for valves	---
UI GC27	Corr. 1	Dec. 2019	Level indicators for cargo tanks	---
UI GC29	Corr. 1	Dec. 2019	Integrated systems	---
UI GC28	Rev.1	Dec. 2019	Guidance for sizing pressure relief systems for interbarrier spaces	1 Jan. 2020
UI SC212	Corr.3	Dec. 2019	Shipboard fittings and supporting hull structures associated with towing and mooring on conventional vessels (SOLAS regulation II-1/3-8)	---
UI SC209	Rev.1	Dec. 2019	SOLAS XII/6.4.3 in terms of redundancy of stiffening structural members for vessels not designed according to CSR (SOLAS regulation XII/6.4.3 and SLS.14/Circ.250)	1 Jul. 2020
UI SC153	Corr.1	Dec. 2019	Rudder Stock Diameter	---
UI GC23	Corr.1	Dec. 2019	Cargo tank structure heating arrangement power supply	---
UI MPC30	Rev. 1	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Table 3 – Symbols and subscripts for terms and variables)	1 Jul. 2020
UI MPC33	Rev. 2	Nov. 2019	Technical Code on Control of EmissionTechnical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 2, Paragraph 2.2.4.1)	1 Jul. 2020
UI MPC40	Rev. 1	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 2, Paragraph 2.3.9)	1 Jul. 2020
UI MPC45	Rev. 1	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 2, Paragraph 2.4.1.7)	1 Jul. 2020
UI MPC51	Rev. 2	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine DTechnical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 3, Paragraph 3.2.1)	1 Jul. 2020
UI MPC53	Rev. 1	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 4, Paragraphs 4.1.1 to 4.1.4)	1 Jul. 2020
UI MPC54	Rev. 1	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 4, Paragraphs 4.3.1 and 4.4.1)	1 Jul. 2020
UI MPC58	Rev. 2	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 4, Paragraphs 4.3.10.2 and 4.3.10.3)	1 Jul. 2020
UI MPC59	Rev. 1	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 4, Paragraphs 4.4.6.2 and 4.4.6.3)	1 Jul. 2020
UI MPC74	Rev. 1	Nov. 2019	Technical Code on Control of Emission ofTechnical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 5, Paragraph 5.10.1)	1 Jul. 2020
UI MPC77	Rev. 1	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 6, Paragraph 6.2.1.2)	1 Jul. 2020
UI MPC112	Rev. 1	Nov. 2019	2017 Guidelines Addressing Additional Aspects of the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines Fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.291(71), Paragraph 3.2.8)	1 Jul. 2020
UI MPC115	Rev. 1	Nov. 2019	2017 Guidelines Addressing Additional Aspects of the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines Fitted With Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.291(71), Paragraph 3.2.11)	1 Jul. 2020
UI MPC116	Rev. 1	Nov. 2019	2017 Guidelines Addressing Additional Aspects of the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines Fitted With Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.291(71), Paragraph 3.2.12)	1 Jul. 2020
UI MPC130	New	Nov. 2019	Technical Code on CTechnical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 2, Paragraph 2.2.5.1)	1 Jul. 2020
UI MPC31	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 1.2.1	---
UI MPC34	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.2.5	--
UI MPC35	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.2.8	---
UI MPC36	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.2.9	---
UI MPC37	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.3.4	---
UI MPC38	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.3.5	---
UI MPC39	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.3.6	---
UI MPC41	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.3.12	---
UI MPC42	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.3.13	---
UI MPC43	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.4.1.1	---
UI MPC44	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.4.1.5	---
UI MPC46	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.4.2	---
UI MPC47	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.4.4.3	---
UI MPC48	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 2.4.5	---
UI MPC49	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 3.1.1	---
UI MPC50	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 3.1.3	---
UI MPC52	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 3.2.3	---
UI MPC55	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 4.3.7 Chapter 4.3.10.6 Chapter 4.4.8	---
UI MPC56	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 4.3.9.1 Chapter 4.4.7	---
UI MPC57	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 4.3.9.2	---
UI MPC60	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.2.2.2	---
UI MPC61	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.2.5	--
UI MPC62	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 3.1.3	---
UI MPC63	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.5.3	---
UI MPC64	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.6	---
UI MPC65	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.1.2	---
UI MPC66	Del.	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.2	---
UI MPC67	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.2.3	---
UI MPC68	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.3.1	---
UI MPC69	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.3.2	---
UI MPC70	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.6.1	---
UI MPC71	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.6.2	---
UI MPC72	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.7	---
UI MPC73	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.9.9	---
UI MPC75	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.11	---
UI MPC76	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 5.12.4.1	---
UI MPC78	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 6.2.3.4.2	---
UI MPC79	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Chapter 6.2.3.5	---
UI MPC80	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Appendix 4 Calibration of the analytical instruments (Refer to chapter 5 of the Nox Technical Code) Chapter 1.1	---
UI MPC81	Del.	Nov. 2019	Resolution 2 of the 1997 MARPOL Conference Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines Appendix 4 Calibration of the analytical instruments (Refer to chapter 5 of the NOx Technical Code) 8.1	---
UI MPC105	Del.	Nov. 2019	Gaseous emissions calculation of marine diesel engines fitted with selective catalytic reduction (SCR) systems Resolution MEPC.198(62)	---
UI MPC108	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 3.2.1.3)	---
UI MPC109	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 3.2.1.4)	---
UI MPC110	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 3.2.1.6)	---
UI MPC111	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 3.2.1.7)	---
UI MPC113	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 3.2.1.9)	---
UI MPC114	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 3.2.1.10)	---
UI MPC117	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 3.5.2)	---
UI MPC118	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 4.1)	---
UI MPC120	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems Resolution MEPC.198(62), Section 5.2.2)	---
UI MPC122	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 6.3.2.1.2)	---
UI MPC123	Del.	Nov. 2019	2011 Guidelines Addressing Additional Aspects to the NOx Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems (Resolution MEPC.198(62), Section 6.3.2.1.5)	---
UI MPC126	Del.	Nov. 2019	Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code 2008, Chapter 4, Paragraph 4.4.6.2)	---
UI SC289	Del.	Jul. 2019	Separation arrangements between inert gas piping and cargo tanks	---
UI GC13	Rev.2	May 2019	Examination before and after the first loaded voyage	1 Jul. 2020
UI GC29	New	May 2019	Integrated system	1 Jul. 2020
UI GC25	Rev.1	May 2019	Cargo piping insulation	1 Jul. 2020
UI GC21	New	Apr. 2019	Welds of type C independent bi-lobe tank with centreline bulkhead	1 Jul. 2020
UI GC20	New	Apr. 2019	Tee welds in type A or type B independent tanks	1 Jul. 2020
UI SC191	Rev.8	Apr. 2019	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. 2019
UI SC190	Rev.1	Apr. 2019	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. 2019
UI GC24	Rev.1	Feb. 2019	Fire Test for Emergency Shutdown Valves	1 Jan. 2020
UI GF18	New	Feb. 2019	Level indicator in the bilge well of tank connection spaces of independent liquefied gas storage tanks	1 Jan. 2020
UI SC6	Rev.1	Feb. 2019	Emergency source of electrical power on Gas Carriers and Chemical Tankers	---
UI GC22	New	Jun. 2019	Water spray system	1 Jul. 2019