2 NAVIGATIONAL AIDS AND RELATED MATTERS
Shipborne Satellite Radionavigational Receivers
2.1 The group considered NAV 45/7/5 (IEC) which suggested various amendments to the performance standards for shipborne satellite radionavigational receivers. Based on the IEC suggestions the group prepared draft revisions to Resolution A. 819(19) (Performance standards for shipborne global positioning system (GPS) receiver equipment), Resolution MSC.53(66) (Performance standards for shipborne GLONASS receiver equipment) and Resolution MSC.64(67) Annex 2 (Performance standards for shipborne DGPS and DGLONASS maritime radio beacon receiver equipment) given in annexes 1,2 and 3.
2.2 Members were invited to provide their comments and proposals thereon to NAV46 and also to consider whether the work should be extended to include a revision of Resolution MSC.74(69) Annex 1 (Performance standards shipborne combined GPS/GLONASS receiver equipment)
User requirements for Heading Systems
2.3 At NAV 44 the Group prepared two tables (given in NAV 45/7 Annex 3) which provided a first analysis of the instruments available to produce heading information and the instruments which require to be supplied with heading information, together with the accuracies attainable. The object of the tables was to facilitate a study with the object of ensuring that IMO had specified sufficient heading devices to meet all the needs of the carriage requirements. There was insufficient time to continue with the work at NAV 45.
2.4 Members were therefore invited to provide any further comments to NAV 46 and to consider whether a similar exercise would be useful for speed indicating devices.
3 ERGONOMIC CRITERIA FOR BRIDGE EQUIPMENT AND LAYOUT
3.1 The Group considered NAV 45/6 (Germany) which reported on the work of the Correspondence Group on Ergonomic Criteria for Bridge Equipment and Layout, and NAV 45/6/1 (IEC) which reported on progress made by the IEC in revising IEC 60945 to incorporate ergonomic criteria. The Group was tasked with producing Guidelines on Ergonomic Criteria for Bridge Equipment and Layout in support of regulation 15 of the draft Chapter V of SOLAS.
3.2 The Group raised various comments with regard to NAV 45/6, particularly:
NAV 45/6 included a lot of detail. There could be a problem of overlap between NAV 45/6 and other standards used by the shipping industry. Annex 4 gives some examples of other relevant instruments. These documents should be available for use in any subsequent discussion.
