Clasification Society Rulefinder 2022 - Version 9.36
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.166(78) - Application of Performance Standards for Transmitting Heading Devices (THDs) to Marine Transmitting Magnetic Heading Devices (TMHDs) - The Maritime Safety Committee,

The Maritime Safety Committee,

RECALLING Article 28(b) of the Convention on the International Maritime Organization concerning the functions of the Committee,

RECALLING ALSO resolution A.886(21), by which the Assembly resolved that the function of adopting performance standards and technical specifications, as well as amendments thereto shall be performed by the Maritime Safety Committee and/or the Marine Environment Protection Committee, as appropriate, on behalf of the Organization,

RECALLING FURTHER that, in accordance with chapter V of the International Convention for the Safety of Life at Sea (SOLAS) 1974, as amended, ships of 300 gross tonnage and upwards and less than 500 gross tonnage, which do not carry a gyro compass, are required to carry a Transmitting Heading Device (THD), or other means to transmit heading information,

RECALLING FURTHER ALSO that, at its seventieth and seventy-third sessions, it adopted resolution MSC.86(70) on Adoption of new and amended performance standards for navigational equipment (which includes, in annex 2, Performance Standards for Marine Transmitting Magnetic Heading Devices (TMHDs)) and resolution MSC.116(73) on Performance Standards for Marine Transmitting Heading Devices (THDs),

RECOGNIZING that the magnetic principle of THDs is covered by both the aforementioned resolutions, which has created an inconsistency and misinterpretation in application of the relevant performance standards to TMHDs,

1. RECOMMENDS Member Governments to ensure that TMHDs installed on or after 1 July 2002 conform to performance standards not inferior to those specified in resolution MSC.116(73);

2. FURTHER RECOMMENDS Member Governments continue to accept installations fitted before 1 July 2002 in accordance with annex 2 to resolution MSC.86(70);

3. DECIDES that annex 2 to resolution MSC.86(70) is superseded by resolution MSC.116(73) for future applications.


Copyright 2021 Clasification Society Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasification Society Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasification Society'. Clasification Society 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 Clasification Society 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.