Unified Interpretations

Definition

Unified Interpretations are adopted resolutions on matters arising from implementing the requirements of IMO Conventions or Recommendations. Such adopted resolutions can involve uniform interpretations of Convention Regulations or IMO Resolutions on those matters which in the Convention are left to the satisfaction of the Administration or vaguely worded.

Interpretations are circulated to Administrations concerned or are sent to IMO for information, as appropriate.

Foreword

  1. IACS, as an international Non-Governmental Organization having observer status at IMO, works in co-operation with IMO in order to endeavour that regulations developed at IMO are clear, unambiguous and can easily be applied without the need of interpretations.
  2. However, interpretations may still be needed in cases where IMO regulations contain only functional requirements, allow alternative solutions to prescriptive requirements, are left to the satisfaction of Administrations or are generally or vaguely worded.
  3. The following Unified Interpretations (UIs) have been developed by IACS to assist the unified implementation of IMO regulations falling in the above-mentioned cases. It should be noted that the development of IACS Unified Interpretations (UIs) is not aiming at introducing additional requirements but at achieving uniform application of IMO regulations.
  4. IACS UIs are to be applied by IACS Societies to ships whose flag Administrations have not issued definite instructions on the interpretation of the IMO regulations concerned, in the course of statutory certification on behalf of those flag Administrations.

The technical backgrounds (development histories) of Unified Interpretations since 2004 can be found by following this link.

A list of the IACS working groups responsible for each Unified Interpretation may be found here.

UI SC33 Deleted

UI SC33 Special arrangements in machinery spaces Deleted in Nov 2005 because of SOLAS 2000 Amendments

UI SC34 Rev1 CLN

UI SC34 Automatic sprinkler, fire detection and fire alarm system (FSS Code, Ch. 8, 2.5.2.3) - Rev.1 Nov 2005

UI SC35 Rev3 CLN

UI SC35 Fixed Fire Detection and Fire Alarm System

FSS Code, Ch. 9, 2.5 System Control Requirements

FSS Code, Ch. 9, 2.5.1 Visual and Audible Fire Signals  

Rev.3 July 2013 CLN

UI SC36 Deleted

UI SC36 Arrangements for oil fuel, lubricating oil and other flammable oils Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC37 Deleted

UI SC37 Arrangements for oil fuel, lubricating oil and other flammable oils Deleted in Nov 2005 because of SOLAS 2000 Amendments

UI SC38 Deleted

UI SC38 Arrangements for oil fuel, lubricating oil and other flammable oils Deleted in Nov 2005 because of SOLAS 2000 Amendments

UI SC39 Rev2 CLN

UI SC39 Ventilation systems in ships other than passenger ships carrying more than 36 passengers (Reg. II-2/8.2) - Rev.2 Nov 2005

UI SC40 Deleted

UI SC40 Means of escape Deleted in Nov 2005 because of SOLAS 2000 Amendments

UI SC41 Rev2 CLN

UI SC41 Means of Escape (Reg. II-2/13.4.1.3) - Rev.2 Nov 2005

UI SC42 Rev2 CLN

UI SC42 Precaution against ignition of explosive petrol and air mixture in closed vehicle spaces, closed ro-ro spaces and special category spaces (Chapter II-2, Reg. 20.3.2.2) - Rev.2 Dec 2007

UI SC43 Rev2 CLN

UI SC43 Precaution against ignition of explosive petrol and air mixture in closed vehicle spaces, closed ro-ro spaces and special category spaces (Chapter II-2, Regulation 20.3.2.1 and 20.3.3) - Rev.2 Dec 2007

UI SC44 Deleted

UI SC44 Bulkheads within accommodation and service spaces Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC45 Rev1 CLN

UI SC45 Fire integrity of bulkheads and decks (Reg. II-2/9.2.3 and 9.2.4) - Rev.1 Nov 2005

UI SC46 Rev1 CLN

UI SC46 Protection of stairways and lift trunks in accommodation spaces, service spaces and control stations (Reg. II-2/9.2.3.4.1) - Rev.1 Dec 2005

UI SC47 Deleted

UI SC47 Restricted use of combustible materials Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC48 Rev1 CLN

UI SC48 Fire protection arrangements in cargo spaces (Reg. II-2/1.6.4 and Reg. II-2/10.7.1.3) - Rev.1 Nov 2005

UI SC49 Rev2 Corr1 CLN

UI SC49 Fire protection arrangements in cargo spaces (Chapter II-2, Regulation 10.7.2) - Rev.2 Corr.1 Clean

UI SC50 Deleted

UI SC50 Special requirements for ships carrying dangerous goods Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC51 Deleted

UI SC51 Special requirements for ships carrying dangerous goods Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC52 Rev1 CLN

UI SC52 Special requirements for ships carrying dangerous goods (Reg. II-2/19.3.4.2) - Rev.1 Nov 2005

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