2.4 Detection
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Assembly - IMO Resolution A.520(13) – Code of practice for the evaluation, testing and acceptance of prototype novel life-saving appliances and arrangements – (Adopted in 1983) - Annex - Recommendation on Testing of Life-Saving Appliances - 2 General Criteria - 2.4 Detection

2.4 Detection

  2.4.1 Visual means of detection for survival craft should make it possible:

  • .1 for an aircraft at an altitude of up to 3,000 m to detect the survival craft at a range of at least 10 miles; and

  • .2 for a ship to detect the survival craft in a seaway in clear conditions at a range of at least 2 miles.

  2.4.2 Visual means of detection for persons in the water should make it possible for a ship to detect the person in a seaway:

  • .1 in clear daytime conditions at a range of at least 0.2 miles;

  • .2 in clear night-time conditions at a range of at least 0.5 miles for a duration of at least 8 h.


Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.