Ecdis licensing and updating of chart data and system software

If an ENC is not available for any area, the service will notify the navigator (during route planning or navigation) and add in C-Map Professional chart data.Weekly updating is included in the annual licensing costs.Charts for use with ECDIS on SOLAS vessels must have been produced by a national hydrographic office using these standards.With regard to ECDIS the most important of these standards are S-52 presentation library which contains all the symbols colours and lines styles required to recreate the ENC on the ECDIS screen and S-57 which includes a description of the data format, product specification for the production of ENC data, and an updating profile.These standards have been amended and added to since.

In September 2014, IHO produced a new draft version (4.0) of its presentation library that covers the symbology used in ENCs and which ECDIS equipment must be able to display.SENC format delivers the charts in ready-to-run format, which speeds up and simplifies installation of charts and updates.CM-ENCs meet ECDIS regulations and provide Real Time Updating via email, internet or on DVD.Another IHO standard, S-63 covering security of data, became a requirement in 2009.Each ECDIS maker has developed their own means of displaying ENCs which must adhere to the rules contained in IHO S-52.

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