电子海图显示与信息系统（ ECDIS-Electronic Chart Display and InFORMation System） ECDIS是指符合有关国际标准的船用电子海图系统。
它以计算机为核心，连接定位、测深、雷达等设备，综合反映船舶行驶状态，为船舶驾驶人员提供各种信息查询、量算和航海记录专门工具。
ECDIS还可以与船舶自动控制系统连接，实现船舶的自动驾驶。
1995年11月IMO讨论通过了ECDIS的性能标准，此标准明文规定，ECDIS可以做为“1974海上人命安全公约（SOLAS）”所要求的纸海图的等价物，换言之，ECDIS可以取代传统的纸海图。
目前，能够提供符合国际标准的ECDIS的厂家不下十几家。
到目前为止还没有国产的符合国际标准的ECDIS产品。
IMO ECDIS performance standard states:“Electronic Chart Display and Information System (ECDIS) means a navigation information system which, with adequate back up arrangements, can be accepted as complying with the up to date chart required by regulationV/19 and V/27 of the 1974 Safety of Lives at Sea (SOLAS) Convention, by displaying selected information from a System Electronic Navigational Chart (SENC) with positional information from navigation sensors to assist the mariner in route planning and route monitoring, and by displaying additional navigation-related information if required.” (IMO Resolution A.817 (19))IMO SOLAS V/192.1 All ships irrespective of size shallhave:2.1.4 Nautical charts and nauticalpublications to plan and display theship’s route for the intended voyageand to plot and monitor positionsthroughout the voyage; an ElectronicChart Display and InformationSystem (ECDIS) may be accepted asmeeting the chart carriagerequirements of this subparagraph;2.1.5 Back-up arrangements to meetthe functional requirements ofsubparagraph 2.1.4, if this function is partly or fully fulfilled by electronic means.Suitable back-up arrangements are defined in Appendix 6 to resolution A.817(19), as amended, and for example include an appropriate folio of paper nautical charts or a second ECDIS system.IMO SOLAS V/27Nautical charts and nautical publications, such as Sailing Directions, Lists of Lights, Notices to Mariners, Tide tables and all other nautical publications necessary for the intended voyage, shall be adequate and up to date.Meeting carriage requirements with ECDISOnly a type approved ECDIS operating with up to date official ENCs and with appropriate back up may be used to replace all paper charts on a vessel.size shall have back-uparrangements to meet thefunctional requirementsof subparagraph 4 if thisfunction is partly or fullyfulfilled by electronicmeans. An appropriatefolio of paper nauticalcharts may be used as aback-up arrangement forECDIS. Other back-uparrangements for ECDISare acceptable.”Back-up“Adequate back-uparrangements should beprovided to ensure safenavigation in case of anECDIS failure. Facilitiesenabling a safe take-overof the ECDIS functionsshould be provided in order to ensure that an ECDIS failure does not result in critical situation. A back-uparrangement should be provided facilitating means for safe navigation of the remaining part of the voyage in caseof an ECDIS failure. It should be possible to operate ECDIS and all equipment necessary for its normalfunctioning when supplied by an emergency source. Changing from one source of power supply to another, or anyinterruption of the supply for a period of up to 45 seconds, should not require the equipment to be re-initializedmanually.”。
