From bue&sevencs.com Mon May 5 15:57:24 1997 Date: Mon, 05 May 1997 13:57:24 +0200 To: iana&iana.org Subject: MIME-Registration application/vnd.ecdis-update Subject: Registration of media type application/vnd.ecdis-update MIME media type name: application MIME subtype name: vnd.ecdis-update Description: This MIME-type is intended for distribution of digital Notices to Mariners (NtM). Digital NtMs are used to automatically update machine readable sea charts that are stored to Electronic Navigational Chart and Display Systems (ECDIS). ECDIS is a computer-based navigation system which is specified by the International Maritime Organization (IMO) and the International Hydrographic Organization (IHO). For further information see 'http://www.iho.shom.fr' Required parameters: format = "S-57" IHO format for update information version = "3.0" version of S-57 format in use vendor = "7Cs" vendor of ECDIS software Optional parameters: encoding = "s57stripped" S-57 header is stripped packing = "zip" for now, only "zip" is used Encoding considerations: Because messages of this type may be sent through older and non-standard mail systems, data is uuencoded and sent in 7-bit ASCII. BEGIN keywords are replaced with the START keyword to keep smart systems from processing the data prior to reception by the ECDIS. Security considerations: Since the contents of sea charts are of vital interest in assuring vessel and harbour security, delivery is accompanied by digital signature information by means of PGP. To allow for mass-distribution of valuable data, additional encryption may be used where appropriate. Interoperability considerations: Adherence to MIME-Standards and version-numbering shall ease interoperability of various products from different vendors. Published specification: Published specification available to ECDIS manufacturers through 7Cs (see 'http://home.sevencs.com/7cs/projects/shared/shared.htm') Applications which use this media type: ECDIS Applications of various vendors ENC Messenger (Update Distribution Application manufactured by 7Cs) Additional information: Magic number(s): -none- File extension(s): -none- Macintosh File Type Code: -none- Person & email address to contact for further information: SevenCs - Entwicklungsesellschaft fuer Geo-Informatik mbH Mr. Gert B. Buettgenbach bue&sevencs.com Intended usage: Limited to navigation systems Author/Change controller: SevenCs - Entwicklungsesellschaft fuer Geo-Informatik mbH Mr. Gert B. Buettgenbach bue&sevencs.com