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Times and heights of high and low waters
Times and heights of high and low waters, split into morning and afternoon, one month per page, with a table drawn around the data (A4 portrait)
Timetable for withdrawal of Standard Nautical Charts and Thematic Charts to be extended beyond 2026 in response to user feedback
Times and heights of high and low waters – alternative structure to Format 8
Times and heights of high water only, split into morning and afternoon, one month per page, with a table drawn around the data (A4 portrait)
High water-only format, split into morning and afternoon, four months per page (A4 landscape)
Marking the first time the UKHO supplies data directly to GEBCO, this initiative aims to advance the understanding of ocean bathymetry and support the Decade of Ocean Science for Sustainable Development
Beta Seabed Mapping Service now available on the ADMIRALTY Marine Data Portal
New ADMIRALTY EasyTide website to provide seamless access to tidal prediction services
Routine resurveys are undertaken in areas where the seabed itself is highly mobile.
An assessment of the 2021 hydrographic survey
The Seabed Mapping App is now available on the ADMIRALTY Marine Data Portal
Times and heights of high and low waters, split into morning and afternoon, one month per page, without a table drawn around the data (A4 portrait)
Bespoke Security of Navigation, Stabilisation Advice and Training (SONSAT) to support maritime security and safety of navigation
Hourly heights
Times and heights of high and low waters as in Format 12, but accompanied by interval heights (any time interval from a minimum of 1 minute to a maximum of 120 minutes)
Times of high water for each day of the year, contained on one page (A4 portrait)
Tidal API replaces UK Tidal API to strengthen UKHO’s tidal prediction services
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