.1 to be completed by Autumn 1999 for input to the twenty-first session of the IMO Assembly, involving a reassessment of the resolution, if necessary, as a result of unforeseen developments on specific proposed future GNSSs; and
.2 to be completed by Autumn 2001 for input to the twenty-second session of the IMO Assembly, involving the consideration of the proposed future GNSS, including the related agreements between interested Governments, other international organizations and/or system providers.
Members had been invited to provide their comments and proposals thereon to NAV 45.
7.3 The Sub-Committee further noted that the Technical Working Group at NAV 44 was of the opinion (NAV 45/7, paragraph 2.12) that there had been no unforeseen developments and that there was nothing to add at that stage.
7.4 The Sub-Committee considered NAV 45/7/4 (Denmark, Finland, Germany, the Netherlands, Norway and Spain) outlining discussions on a future GNSS within the European GNSS Maritime Advisory Forum - specifically identifying potential maritime applications and associated user requirements relevant to a future GNSS. The "List of minimum maritime user requirements for a GNSS (Appendix 2 to the Annex of resolution A.860(20)) had been reviewed and extended, in particular for non-general maritime navigation applications.
In document NAV 45/7/4 the Organization was invited to make an assessment of the contribution to navigation performance of vessel technical error, charts and a future GNSS. It was recommended that urgent consideration be given to producing charts, cost-effectively, to an accuracy consistent with a GNSS and to a common datum.
7.5 The Sub-Committee was of the opinion that developments reflected in the attached report to NAV 45/7/4 could be used, to some extent, for review of resolution A.860(20) and invited Members to consider the report and submit their comments and proposals to NAV 46 for consideration with a view to revising resolution A.860(20).
