Rules concerning computer-based systems (IACS UR E22 (Rev.3)

ACS UR E22 (hereinafter referred to as "UR E22") is unified requirements relating to computer-based systems used on vessels, which has recently been amended and adopted as UR E22 (Rev.3) to better clarify the requirements, specific to each of the phases of design, development, commissioning, and maintenance.
ClassNK has amended Rules to involve incorporating UR E22 (Rev.3) into Rules/Guidance for the Survey and Construction of Steel Ships, Part X that have been newly established (scheduled to come into effect in July 2024). Contemporaneously with the amendments, existing Part D, Chapter 18, Annex 18.1.1 of the Rules and Guidance for the Survey and Construction of Steel Ships, which specifies the requirements pursuant to UR E22 (Rev.2), has been deleted

The purpose of this TEC-1316 (hereinafter referred to as "this TEC") is to disseminate information on what actions need to be taken by the manufacturers, shipyards, and vessel owners (including operators) pursuant to the new rules on the computer-based systems that will be used onboard any vessels whose construction contract date is on or after 1 July 2024, to which UR E22 (Rev.3) will apply.

For all vessels whose construction contract date is on or after 1 July 2017 but is before 1 July 2024, UR E22 (Rev.2) continues to apply. For details, please refer to ClassNK Technical Information No. TEC-1235.