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 F17 Deleted
UR F18 Deleted
UR F19 Deleted
UR F21 New
UR F21 Pump room ventilation - 1974
UR F22 New
UR F22 Direct loading pipes to oil tanker cargo tanks - 1974
UR F23 Deleted
UR F24 Rev2 CLN
UR F24 Temperature of steam and heating media within the cargo area - Rev.2 May 1998
UR F25 Deleted
UR F26 Rev3 CLN
UR F26 Safety aspects of double bottoms and duct keels under cargo oil tanks - Rev.3 May 2004
UR F27 New
UR F27 Cargo openings in the bottoms of topside tanks of ships carrying alternatively oil and grain - 1978
UR F28 Deleted
UR F29 Rev6 CLN
UR F29 Non-sparking fans - Rev.6 June 2005
UR F30 Deleted
Deleted Feb 2002
UR F31 Deleted
UR F32 New
UR F32 Fire detecting system for unattended machinery spaces - 1976
UR F33 New
Prohibition of carriage in fore peak tanks of oil or other liquid substances which are flammable - 1981
UR F34 Deleted
Deleted July 2010
UR F35 Rev8 CLN
UR F35 Fire protection of machinery spaces - Rev.8 June 2005
UR F36 Deleted