Unified Requirements are adopted resolutions on matters directly connected to or covered by specific Rule requirements and practices of classification societies and the general philosophy on which the rules and practices of classification societies are established.
Subject to ratification by the governing body of each Member Society, Unified Requirements shall be incorporated in the Rules and practices of the Member Societies, within one year of approval by the IACS General Policy Group.
The existence of a UR does not oblige a Member Society to issue respective Rules if it chooses not to have Rules for the type of ship or marine structure concerned.
Unified Requirements are minimum requirements. Each Member remains free to set more stringent requirements.
The technical backgrounds (development histories) of Unified Requirements since 1999 can be found by following this link.
A list of the IACS working groups responsible for each Unified Requirement may be found here.
UR S7 Rev4 CLN
UR S10 Rev4 Corr1 CLN
UR S11A New
UR S11A Longitudinal Strength Standard for Container Ships - June 2015
UR S12 Rev5 CLN
UR S13 Rev2 Corr1 CLN
UR S14 Rev5 CLN
UR S15 Rev1 CLN
UR S15 Side Shell Doors and Stern Doors - Retrospective Application of UR-S9 to Existing Ro-Ro Passenger Ships - Rev.1 Nov 2003
UR S16 Rev1 Corr1 CLN
UR S16 Bow Doors and Inner Doors - Retrospective Application of UR-S8, as amended 1995, to existing Ro-Ro Passenger Ships - Rev.1 Corr.1 Aug 2004
UR S17 Rev9 CLN
UR S18 Rev9 CLN
UR S19 Rev5 CLN
UR S19 Evaluation of Scantlings of the Transverse Watertight Corrugated Bulkhead Between Cargo Holds Nos. 1 and 2, with Cargo Hold No. 1 Flooded, for Existing Bulk Carriers - Rev.5 July 2004
UR S20 Rev6 CLN
UR S21 Rev5 CLN
UR S21A Rev1 CLN
UR S22 Rev3 CLN
UR S22 Evaluation of Allowable Hold Loading of Cargo Hold No.1 with Cargo Hold No.1 Flooded, for Existing Bulk Carriers - Rev.3 July 2004
UR S23 Rev4 CLN
Implementation of IACS Unified Requirements S19 and S22 for Existing Single Side Skin Bulk Carriers - Rev.4 Aug 2007
UR S24 Deleted
Deleted Jan 2004