Materials and Welding

UR W10 Rev2 CLN

UR W10 Spheroidal or nodular graphite iron castings - Rev.2 May 2004

UR W11 Normal and higher strength hull structural steels - Rev.8 April 2014 Clean

Note: UR W11 Rev 9 will come into force on 1 July 2018 and can be found in "Previous Revisions" 

UR W12 Deleted


UR W13 Rev5 Corr1 CLN

UR W13 Thickness tolerances of steel plates and wide flats - Rev.5 Corr.1 May 2012

UR W14 Rev2 CLN

UR W14 Steel plates and wide flats with specified minimum through thickness properties (“Z” quality) Rev.2 May 2004

UR W15 Deleted


UR W16 High strength steels for welded structures - Rev.3 Mar 2016 Complete Revision

UR W17 Approval of consumables for welding normal and higher strength hull structural steels - Rev.4 Jan 2016

UR W18 Rev5 CLN

UR W18 Anchor chain cables and accessories including chafing chain for emergency towing arrangements - Rev.5 May 2004

UR W19 Deleted

Normal and higher strength hull structural steel grades E and E36 with thicknesses above 50 up to 100 mm - superseded by W11,  - Deleted 1995 

UR W1 Materials and welding for gas tankers - Rev.3 Aug 2016

UR W20 Deleted

Higher strength hull structural steels with a minimum yield strength of 390 N/mm2 - superseded by W11, - Deleted 1995 

UR W21 Deleted

Hull structural steels for low temperature application - superseded by W11, - Deleted 1995 

UR W22 Offshore mooring chain - Rev.6 June 2016

UR W23 Rev1 CLN

UR W23 Approval of welding consumables for high strength quenched and tempered steels for welded structures - Rev.1 1997

UR W24 Rev3 Corr1 CLN

UR W24 Cast copper alloy propellers - Rev. 3 Corr.1 Jan 2013

Aluminium alloys for hull construction and marine structure - Rev.5 June 2014

UR W26 Rev1 CLN

UR W26 Requirements for welding consumables for aluminium alloys - Rev.1 June 2005

UR W27 Rev1 CLN

UR W27 Cast steel propellers - Rev.1 May 2004

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