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 SC13 New

UI SC13 Precautions against shock, fire and other hazards of electrical origin (Chapter II-1, Regulation 45.6.1) - 1985

UI SC14 New

UI SC14 Special requirements for machinery, boilers and electrical installations (Chapter II-1, Regulation 53.3) - 1985

UI SC15 Deleted

UI SC15 Definitions Deleted in Nov 2005 because of SOLAS 2000 Amendments

UI SC16 Rev2 CLN

UI SC16 Definitions (Reg. II-2/3.34) - Rev.2 Aug 2006

UI SC17 Rev2 CLN

UI SC17 Definitions - Control Stations (Reg. II-2/3.18) - Rev.2 Nov 2005

UI SC18 Deleted

UI SC18 Fire pumps, fire mains, hydrants and hoses Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC19 Deleted

UI SC19 Fire pumps, fire mains, hydrants and hoses Deleted in Nov 2005 because of SOLAS 2000 Amendments

UI SC20 Deleted

UI SC20 Fire pumps, fire mains, hydrants and hoses Deleted in Nov 2005 because of SOLAS 2000 Amendments

UI SC21 Deleted

UI SC21 Fire pumps, fire mains, hydrants and hoses Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC22 Deleted

UI SC22 Fire pumps, fire mains, hydrants and hoses Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC23 Deleted

UI SC23 Fire pumps, fire mains, hydrants and hoses Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC24 Deleted

UI SC24 Fire pumps, fire mains, hydrants and hoses Deleted in Nov 2005 because of SOLAS 2000 Amendments

UI SC25 Rev2 CLN

UI SC25 Fixed gas fire-extinguishing systems (FSS Code, Ch. 5, 2.1.3.2) - Rev.2 Nov 2005

UI SC26 Deleted

UI SC26 Deleted

UI SC27 Deleted

UI SC27 Deleted

UI SC28 Deleted

UI SC28 Deleted

UI SC29 Deleted

UI SC29 Deleted

UI SC30 Rev2 CLN

UI SC30 Fire-extinguishing arrangements in machinery spaces (Interpretation of Chapter II-2, Regulation 10.5.1 and 10.5.2) - Rev.2 Nov. 2005

UI SC31 Deleted

UI SC31 Fire-extinguishing arrangements in machinery spaces Deleted in Nov 2005 because of SOLAS 2000 Amendments.

UI SC32 Rev2 CLN

UI SC32 Fixed high expansion foam fire-extinguishing system (FSS Code, Ch. 6, 2.2) - Rev.2 Nov 2005

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