Press release: UKHO supports safe arrival of HMS Queen Elizabeth into Portsmouth

MoD_RSS

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The United Kingdom Hydrographic Office (UKHO) helped with preparations for the arrival of HMS Queen Elizabeth into Portsmouth by providing specialist marine geospatial expertise and validating hydrographic survey data.

Following initial dredging operations to make Portsmouth’s navigation channel and entrance deeper, hydrographic data was collected by the survey launch HMS Gleaner using modern multibeam echosounder technology to confirm the available water depth.

As well as providing advice during data collection, the final dataset was then validated by the UKHO to ensure it was the to the highest Category Zone of Confidence - a criteria used to determine the accuracy and data quality of seafloor coverage for safe navigation purposes. The UKHO then used this information to update ADMIRALTY chart coverage of Portsmouth Harbour and Approaches, to support the safe arrival of HMS Queen Elizabeth.

Working in close collaboration with the Royal Navy, Queen’s Harbour Master and the Defence Infrastructure Organisation, the UKHO also provided its wider marine geospatial expertise to prepare for the arrival, by providing detailed tidal stream predictions and supporting the placement of navigational aids.

Portsmouth fly-through

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That Portsmouth fly-through (at 15 seconds!) should interest anyone navigating the newly-dredged approach channel leading into Portsmouth harbour.

Best viewed at least a couple of times by stepping through frame-by-frame to enable you to orientate & distinguish the shore line features.

What caught my eye was that series of 'pockmarks' close inshore to the west of Clarence pier,. Their shape and pattern appeared similar to a series of WW2 craters caused by the heavy bombing suffered here in 1941: http://portsmouthblitz.co.uk/?page=raids/blitz
 
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