Unified Requirements

Explanation

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 F37 Deleted

Deleted May 1998

UR F38 Deleted

Deleted May 1998

UR F39 Deleted

Deleted July 2002

UR F40 Deleted

Deleted 1997

UR F41 New

UR F41 Sea intakes for fire pump on ships with ICE class - 1993

UR F42 New

UR F42 Fire testing of flexible pipes - 1995

UR F43 Rev2 CLN

UR F43 Installation requirements for analysing units for continuous monitoring of flammable vapours - Rev.2 June 2002

UR F44 Rev2 CLN

UR F44 Fore peak ballast system on oil tankers - Rev.2 Oct 2010

UR G

Gas Tankers

UR G1 Rev3 CLN

UR G1 Cargo containment of gas tankers - Rev.3 June 2016

UR G2 Rev1 CLN

UR G2 Liquefied gas cargo tanks and process pressure vessels - Rev.1 1979

UR G3 Rev6 CLN

UR G3 Liquefied gas cargo and process piping - Rev.6 Jan 2016

UR G4 Deleted

Re-categorised as UR Z16 - June 1999

UR I

Polar Class

UR I1 Rev2 CLN

UR I1 Polar Class Descriptions and Application - Rev.2 Apr 2016

UR I2 Rev3 CLN

Structural Requirements for Polar Class Ships - Rev.3 Apr 2016 Clean

UR I3 Rev1 Corr1 CLN

UR I3 Machinery Requirements for Polar Class Ships - Rev.1 Corr.1 Oct 2007

UR K

Propellers

UR K1 Deleted

Deleted - due to being superseded by a new UR W24 "Cast copper alloy propellers"

UR K2 Deleted

Deleted - due to being superseded by a new UR W24 "Cast copper alloy propellers"

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