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  2. Admiralty chart - Wikipedia

    en.wikipedia.org/wiki/Admiralty_chart

    Admiralty charts have been produced by UKHO for over 200 years, with the primary aim of saving and protecting lives at sea. The core market for these charts includes over 40,000 defence and merchant ships globally. Today, their products are used by over 90% of ships trading internationally.

  3. Electronic navigational chart - Wikipedia

    en.wikipedia.org/wiki/Electronic_navigational_chart

    An Electronic Navigational Chart (ENC) is a digital representation of a real-world geographical area for the purpose of Marine navigation.Real-world objects and areas of navigational significance, or to a lesser degree - informational significance, are portrayed through Raster facsimiles of traditional paper charts; or more commonly through vector images, which are able to scale their relative ...

  4. Notice to mariners - Wikipedia

    en.wikipedia.org/wiki/Notice_to_Mariners

    The NOTMAR web site also includes the historical Chart corrections and historical Sailing Direction corrections; as well, it provides access to downloadable Chart Patches, contains links to CHS’s Chart Number 1, instructions for applying Notices to mariners to manually update their paper charts, and other useful information. [citation needed]

  5. Hydrographic office - Wikipedia

    en.wikipedia.org/wiki/Hydrographic_office

    The United Kingdom Hydrographic Office (UKHO) is now a part of the Ministry of Defence rather than a naval department and is located in Taunton, Somerset, near Creechbarrow hill. It is best known for producing the well-known Admiralty chart series of nautical charts that covers almost every navigable stretch of water on Earth. The UKHO also ...

  6. S-63 (encryption standard) - Wikipedia

    en.wikipedia.org/wiki/S-63_(encryption_standard)

    S-63 is an International Hydrographic Organization (IHO) standard for encrypting, securing and compressing electronic navigational chart (ENC) data.. The Data Protection Scheme was prepared by the IHO Data Protection Scheme Advisory Group, and was based on the protection scheme developed and operated by Primar as part of providing their protected ENC service.

  7. Nautical publications - Wikipedia

    en.wikipedia.org/wiki/Nautical_publications

    In the UK, the United Kingdom Hydrographic Office, the Witherby Publishing Group and the Nautical Institute provide numerous navigational publications, including charts, publications on how to navigate and passage planning publications. [1] [2] In the US, publications are issued by the US government and US Coast Guard.

  8. Chart datum - Wikipedia

    en.wikipedia.org/wiki/Chart_datum

    Many national charting agencies, including the United Kingdom Hydrographic Office and the Australian Hydrographic Service, [4] use the LAT to define chart datums. One advantage of using LAT for chart datums is that all predicted tidal heights must then be positive (or zero) avoiding possible ambiguity and the need to explicitly state sign.

  9. United Kingdom Hydrographic Office - Wikipedia

    en.wikipedia.org/wiki/United_Kingdom...

    The United Kingdom Hydrographic Office (UKHO) is the UK's agency for providing hydrographic and marine geospatial data to mariners and maritime organisations across the world. The UKHO is a trading fund of the Ministry of Defence (MoD) and is located in Taunton , Somerset , with a workforce of approximately 900 staff.