・Last meeting hosted by Oerlikon Contraves in Montreal 23^rd to 27^th Aug.

・Next meeting planned for 15^th to 19^th November at BSH, Hamburg.

・Planned to test prototype units wk 39, 20^th September at BSH.

・Sea trials early October hosted by;

・USCG Groton, Ct. USA.

・NLB Oban, Scotland.

・To achieve CD following Hamburg Nov. 2004 we require inter-sessional work particularly chapter 12 "hardware".

・One further meeting planned for end of January 2005.

　

・WG 8a would like to offer to IALA AIS committee current drafts of the principal sections essential for the operation of CS TDMA.

・Comments and inputs are welcomed by WG8a, particularly if they could be provided as inputs to the up and coming WG8a meeting in Hamburg, 15th Nov.

　

・Proposed draft annex to ITU-R M.1371 on an AIS Class B using CS TDMA technology which is an extract of IEC 62287 version 6.

・This is a working document and is being constantly updated by the work of the group, however the information submitted to date represents a realistic and comprehensive review of the amendments and additions to ITU-R M.1371.

・The performance and operational requirements of chapters 4,5 & 6 are included but might not be part of the final ITU document.

　

・Silent when there is no position fix.

・Cannot synchronise without position as cannot compute propagation delay.

・30 second timeout ie one transmission then silent until position fixed.

・Admin. B "No position always silent"

・Admin. A "Response to all interrogations"

・Applies to message 19.

　

・For manufacturers' identification number

・To track units operating sub-optimally.

・3 Character code

・Who allocates number/ maintains database?

・Inputs to WG 14.

・Input to clarifications prepared and maintained by IALA AIS TWG.

　

・Voluntary SOTDMA Class B users would be detrimental to VDL.

・Given;

・IEC 62287 is the test and performance standard for CS TDMA AIS.

・The proposal for an IEC new work item for Class B SO TDMA has insufficient support at present.

・This would be a separate IEC standard, not part of 62287.