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Ship's Diary  During her time at sea, HMS Endurance will be sending back regular diaries to keep us all up to date with what is happening on this deployment. Use the links below to read extracts from the diary. Trafalgar Celebrations Multi Beam Trials Summer Highlights Sonar Investigations A Stormy Life Some Interesting Facts Time Zone Changes Eye of the Storm Remembrance Sunday NBCD Its A Knockout Estrela Visit to HMS Endurance Endurance Encounters QE2 Again! St Ippolyts CE Primary School The Engineering Department News from the Flight Department Photos from the Flight Department Communications in Antarctica Kevin Schafer Christmas Message Endurance meets Ellen MacArthur Photos from the Flight Department Coachhouse Publications Update by Nick Lambert, Captain, HMS Endurance Hydrographic Survey Progress Update from Endurance's Hydrographic Surveyors New Year update from the Flight Department BSES Members’ Expedition to South Georgia A Christmas Day Outing Boat Camp South Georgia Update from the Engineering Department BSES Expedition Summary HMS Endurance contributing to World Meteorology BBC Film Crew Feature BBC – Aerial Filming with HMS Endurance Vertical Photography by Lt Scott ‘Stimpy’ Simpson Endurance Enters Port Foster - Deception Island Loadlifting by the Flight Dept February update from the Flight Department HMS Endurance and the 'Ghost Ship' Maxwell Bay Andy Rouse – Wildlife Photographer Site Guidelines Review Team Antarctic Gallery 2005/6 Deployment Gallery by CMEM(M) Pete Morewood HMS ENDURANCE help Norwegians Restore the South Georgia Husvik Villa 2005/6 Deployment Gallery by POAC Andy Johnson 2005/6 Deployment Gallery Part 2 CMEM(M) P Morewood HMS ENDURANCE Lends a Helping Hand Update from Nick Lambert, the Captain of HMS ENDURANCE Engineering Department Update from Lt Matt Liddell, Engineer Officer 2005/6 Deployment Gallery Part 2 by POAC Andy Johnson Warfare Journal by Lt Russ Abbot Penguin Racing Night Deployment Cup April Update from the Flight Department Sonar Investigations During our recent transit from Portsmouth to Madeira we took the opportunity to investigate the performance of the newly fitted Multi Beam Echo Sounding (MBES) system. We were particularly interested in seeing how the system performed in rougher weather, and given the bumper passage we were not disappointed. Despite an out of date sound velocity profile (note red warning highlights in bottom left window), and some noise caused by bubbles introduced by pitching (light blue blooms in bottom central window showing water column activity and in right hand display showing stave profile) the waterfall display, and geographical display are showing a lot less interference than previously experienced. AN EXAMPLE OF DATA COLLECTION FROM THE ENGLISH CHANNEL This is due to the co-ordination engineered between the two hydrographic echo sounders. Previously they were transmitting independently which resulted in unwanted noise from the powerful EA600 Single Beam Echo Sounder (SBES) drastically impacting on the EM710S MBES. An analogy might be trying to hear a loud brass instrument and a quieter piano, both playing different tunes, but simultaneously – resulting in a cacophony. Now the MBES can trigger the SBES to integrate the 2 systems, thus reducing unwanted noise. This would be like the 2 instruments playing their different parts under the direction of a conductor resulting in harmonious music! An example of the performance in deeper water is shown below. SWATHE DATA RECOVERED OVER LION BANK In the main window the data is a little ‘ragged’ from the North until just below the ‘zoom’ icons (the magnifying glasses). This is coincident with the time an up to date Sound Velocity Profile (shown in right hand window) was inputted into the system, and the data quality markedly improves from then on (e.g. further South). The lower (Calibration) window shows a cross section across the 3 selected lines in the main (Geographical) window, shown in blue, red and orange. It is particularly pleasing to see all the dots from different lines largely lying on top of each other, indicating that the quality is reliable. We can thus have confidence in the features detected in the geographical window and can extract the critical data digitally to render to the UK Hydrographic Office to update navigational charts. Although we are still experiencing interference from bubble caused during pitching, the MBES is now groomed and performing most satisfactorily. The team are looking forward to using it in Antarctica, to gather high quality data in previously unsurveyed or scantily investigated areas. George Tabeart, Charge Surveyor, HMS ENDURANCE.
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