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Last update: 2026/06/02

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Radio Logbooks Required on Board Liberian and Greek Flag GMDSS Ships

Tec No.:TEC- 275 (422kb)

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Issued:12 Aug 1998

The 1988 Amendments to SOLAS regarding GMDSS requires in Regulation IV/17 that in accordance with ITU/Radio Regulation all the GMDSS ships should carry a radio logbook and record in it all incidents connected with radio communication service which appear to be of importance to safety of life at sea. The Liberian Government and Greek Government have recently informed the Society of their requirements for the format, retention, etc. of a radio logbook by Marine Notice No. 6-180-12 and EEP Circular No.1423.3/0498, the outlines of which are shown below, and it is sincerely recommended that you take an appropriate action in this respect where necessary. For information, a surveyor when conducting a radio survey of Liberian/Greek flag ships will ascertain that th

This Technical Information became null and void on 8 Aug 2007.

Close-Up Survey for Longitudinals in Double Bottom and Bilge Hopper Tanks of Large Bulk Carriers

Tec No.:TEC- 267 (122kb)

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Issued:18 Jun 1998

PLEASE BE INFORMED THAT fractures have been recently reported in the longitudinals in double bottom and bilge hopper tanks of large bulk carriers of more than 200 meters in length. This type of fractures have been found in the bottom longitudinals and side longitudinals of high-tensile steel at the following locations : 1. Intersection with watertight floors and watertight bulkheads 2. Connection with stiffeners or brackets on floors and transverse web plates The fractures propagated toward shell plates. It is reported that a certain ship evacuated as emergency measures because the fracture extended into the shell plate. The fractures were mainly detected in midship part and found not only in asymmetric section of the said longitudinals such as "L" sh

This Technical Information became null and void on 22 Jan 2016.

Required Radio Personnel on board Belizean, Qatari and Sri Lankan Flag GMDSS Ships

Tec No.:TEC- 266 (86kb)

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Issued:30 Jun 1998

The Belizean Government, the Qatari Government and the Sri Lankan Government have notified the Society of their requirements for radio personnel on board GMDSS ships, which are reproduced below for information/action: Required Radio Personnel on Board Belizean Flag GMDSS Ships 1. For ships with shore based maintenance engaging on voyages beyond sea area A1, - Two deck officers both with GOC, or one dedicated radio officer with GOC. 2. For ship with onboard maintenance engaging on voyages beyond sea area A1 - One dedicated radio officer with 1st or 2nd class REC and one deck officer with GOC, Or, - One holder of 1st or 2nd class REC (Not designated as the radio officer) and two deck officers both with GOC. Required Radio Personnel on Board Qata

This Technical Information became null and void on 22 Jan 2016.

Sea Areas A1 and A2 and Required Radio Personnel on board Singapore Flag GMDSS Ships Specified by Singapore Government

Tec No.:TEC- 253 (119kb)

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Issued:23 Apr 1998

1. The Government has recently notified the Society that they are taking steps to establish Sea Area A1 (the area within 30 miles of Singapore) and Sea Area A2 (the area within 200 miles of Singapore but outside Sea Area A1) around their coastal waters, and ships plying solely within Sea Area A1 may be fitted with GMDSS equipment for Sea Area A1 and ships plying solely within Sea Areas A1 and A2 may be fitted with GMDSS equipment for Sea Areas A1 and A2. 2. Qualifications and number of radio personnel required on board Singapore flag GMDSS ships are given in NK Technical information No.169 of 20 October 1995. The Government has, however, notified the Society of the change of the qualifications and number of radio personnel required on board Singapore fl

This Technical Information became null and void on 29 Sep 2020.

Application of ILO Conventions to Crew Accommodations of Liberian Ships and Marshall Islands Ships

Tec No.:TEC- 238 (92kb)

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Issued:18 Dec 1997

The Liberian Government and the Marshall Islands Government, informing the Society that ILO Conventions No. 92 and No. 133 have already been effective in these countries, have notified the Society of the instructions on the application of these Conventions to Liberian ships and Marshall Islands ships. In accordance with the instructions of these Governments and upon request, the Society will conduct a survey of the crew accommodations of Liberian ships and Marshall Islands ships and issue a relative Certificate in the manner as specified below. 1. For the crew accommodations of ships to be built with the Liberian flag, or the Marshall Islands flag, and with NK class, the Society will apply the requirements of ILO Conventions No. 92 and No. 133, and, u

Crew Accommodations of Singapore Ships

Tec No.:TEC- 235 (195kb)

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Issued:30 Nov 1997

The "Merchant Shipping (Crew Accommodation) Regulations 1997 will enter into force on 1 December 1997. The Regulations are based on the ILO Convention No. 92 and contain provisions setting minimum standards for the location, construction, arrangement, equipment and facilities of crew accommodations on board ships. The Regulations will apply to new ships (of which keels are laid or which are at a similar stage of construction on or after 1 December 1997) of 500 gross tons and above, and existing ships (which are not new ships) of 500 gross tons and above of which the crew accommodations are substantially altered or reconstructed on or after 1 December 1997. The Society has now been authorized by the Singapore Government to survey the crew accommodation

This Technical Information became null and void on 21 Aug 2007.

Guidance for IACS Auditors to the ISM Code

Tec No.:TEC- 229 (2625kb)

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Issued:1 Oct 1997

"Guidance for IACS Auditors to the ISM Code (April 1997)" has been established by the IACS (International Association of Classification Societies). ClassNK has followed these guidance together with IMO Guidelines (Resolution A.788(19) for the ISM Code Certification. These IACS Guidance shall be attached your reference. If you need more information about these matters, please do not hesitate to contact us. (ClassNK Ship Management Assessing Division, Head Office, Tokyo, Tel: 81-3-5226-2034, Fax: 81-3-5226-2030) Attached 1. Guidance for IACS Auditors to the ISM Code (April 1997)

This Technical Information became null and void on 21 Aug 2007.

Guidelines for a Structure of an Integrated System of Contingency Planning for Shipboard Emergencies

Tec No.:TEC- 227 (1787kb)

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Issued:2 Oct 1997

According to the requirements of ISM Code, the Company should establish procedures to identify, describe and respond to potential emergency shipboard situation, and the Company should establish programmes for drills and exercises to prepare for emergency actions. For the purpose of assisting to establish such procedures by the Company, the "Guidelines for a Structure of an Integrated System of Contingency Planning for Shipboard Emergencies" has been prepared and issued by IMO. Marine Department of Hong Kong has issued the Merchant Shipping Notice which the Owners, ship managements and Masters are invited to take note of these Guidelines. We would inform you of these Guidelines for your reference. If you need more information about these mat