Rules concerning computer-based systems (IACS UR E22 (Rev.3) related) Tec No.:TEC- 1348 (228kb) Contact:Machinery Department Issued:3 Apr 2025 Considering the actual computer-based systems that are adopted to vessels, ClassNK Technical Information No. TEC-1316, dated January 26, 2024, has been partially updated and published as TEC-1348. Accordingly, ClassNK Technical Information No. TEC-1316 is out of print. The main changes are as follows ・ Update content to be included in "3. Documents to be submitted" in TEC-1316 ・ Addition of example items of systems falling under Category II and III in "Attachment 1. Example of List of system categorizations" in TEC-1316 IACS 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 e