ANNEX 4
DRAFT AMENDMENTS TO THE ANNEX TO RESOLUTION A.817(19) -
PERFORMANCE STANDARS FOR ELECTRONIC CHART DISPLAY AND INFORMATION SYSTEMS (ECDISs)
Add a new paragraph 1.9
1.9 When the relevant chart information is not available in the appropriate form (see section 4), some ECDIS equipment may operate in the Raster Chart Display System (RCDS) mode as defined in Appendix 7. Unless otherwise specified in Appendix 7, the RCDS mode of operation should conform to performance standards not inferior to those set out in this Annex.
Modify paragraph 10.5.7 as follows：
10.5.7 ECDIS should provide an indication alarm when the input from the position-fixing system is lost. ECDIS should also repeat, but only as an indication, any alarm or indication passed to it from a position-fixing system.
In Appendix 5, paragraph 10.5.7 change "indication" to "alarm".
Add a new Appendix 7 to the Annex to the resolution：
APPENDIX 7
RCDS MODE OF OPERATION
Whenever in this appendix reference is made to provisions of the Annex related to ECDIS, ECDIS should be substituted by RCDS, SENC by SRNC and ENC by RNC, as appropriate.
All paras of the Annex related to ECDIS are indicated as to whether they apply to RCDS, do not apply to RCDS, or are modified in order to apply to RCDS. These paras are followed by additional requirements for ECDIS equipment in the RCDS mode.
1 INTRODUCTION
1.1 Para applies to RCDS.
1.2 When operating in the RCDS mode, ECDIS equipment should be used together with an appropriate folio of up-to-date paper charts.
