SUB-COMMITTEE ON SAFETY OF
NAVIGATION
44th session
Agenda item 7.2

NAVIGATIONAL AIDS AND RELATED MATTERS

Performance Standard for Raster Chart Display Systems (RCDS) and advice on the use and production of Electronic Chart Systems (ECS)

Submission by the International Hydrographic Organization (IHO)

1　　　　NAV 43 requested that the IM0/IHO Harmonising Group on ECDIS (HGE) reconsider proposals made to the Meeting dealing with above matters (paragraphs 7,15 to 7.29 of NAV 43/15). At the HGE Meeting, held at the IMO on 15-16 September 1997, HGE was unable to obtain consensus on the Issues and have now advised IMO accordingly. In an effort to resolve these important matters, and to attempt to prevent further delays in their consideration an IHO meeting on HGE matters was held at the International Hydrographic Bureau (IHB) in Monaco from 23-7-4 February 1998. The intention was to make recommendations to IMO. Thereafter the Member States of the International Hydrographic Organization (IHO) were polled for their views on a Performance Standard for RCDS (IHO Circular Letter 15/1998) and the results have been analysed and, with the proposals of the Meeting, submitted for consideration by NAV 44.

2　　　　The IH0/IMO HGE was responsible for the development of the Performance Standards for ECDIS which were accepted as the standards by IMO at its Assembly in November 1995 [Resolution A.817(19)]. Member States of the IHO, and some commercial organizations, have been developing the Electronic Nautical Charts (ENC) for some considerable time and the IHO Member States are committed to the completion of world-wide coverage of ENCs as soon as possible. While much progress has been made, large areas of the major intemational shipping routes have not, as yet. ENC coverage at the required scales and those that are available may not have been fully quality assured.

3　　　　As the demand to provide ENCs for ECDIS is increasing, some Hydrographic Offices of IHO Member States have proposed an interim solution in the form of the Raster Chart Display System (RCDS) making use of Raster Navigational Charts (RNC). This system is designed to fuel ECDIS when ENCs are not available and are intended to be used in conjunction with the relevant paper charts. The Member States involved in the production of Raster Navigational Charts have not proposed that this should be the only interim solution but that as RCDS is based on verified information held by Government authorised

For reasons of economy, this document is printed in a limited number. Delegates are kindly asked to bring their copies to meetings and not to request additional copies.

I:/NAV/44/7-8.WPD

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