This geophysical survey has been carried out by British Geological Survey (BGS) for BGS, the survey took place in July 1989 off the coast of East Anglia on board the MV Shorething. The purpose was to collect data as part of the UK mapping programme for 1:50k special sheets. Sea floor data were collected using echosounder. Sub-bottom profiling data were collected using surface tow boomer and sidescan sonar. These data are archived by BGS. No BGS survey report currently available.

This geophysical magnetic survey has been carried out by, Institute of Geological Sciences (IGS) now British Geological Survey (BGS) in cooperation with Hydrogrphic Department of the Navy for BGS, the survey took place from spring/summer 1972 in the western English Channel on board the MV Researcher. The purpose was to collect data as part of a regional geophysical survey programme. Details of the survey are contained in IGS Annual Report 1972.

Wessex Archaeology (WA) was commissioned by English Heritage (EH) to undertake geophysical surveys as part of the project entitled ‘Wrecks on the Seabed: Assessing, Evaluating and Recording’, supported by Round 2 of the Aggregate Levy Sustainability Fund (ALSF). The specific aim of this project was to provide industry, regulators and contractors with guidance on the archaeological assessment, evaluation and recording of wreck sites. ‘Assessment, evaluation and recording’ are taken to include various methods of archaeological investigation that are intended to improve the understanding, preservation and appreciation of the historic environment. Geophysical surveys were conducted over five wreck site areas. This archive relates to the geophysical survey over the Liberator, an unknown wreck, and the submarine U86. Sidescan sonar and magnetometer data were acquired from the vessel Wessex Explorer on the 9th and 12th August 2005 and the multibeam echosounder data were acquired on the 15th and 19th August 2005. The geology and geophysics component of the data are archived at British Geological Survey (BGS) MEDIN Data Archive Centre (DAC) for Geology and Geophysics. Data were also provided to other archive centres as appropriate.

Wessex Archaeology (WA) was commissioned by Cadw to acquire, process and interpret marine geophysical data over a number of known and suspected wreck site locations off the coast of Wales. This survey was conducted under the Protection of Wrecks Act (1973) contract and the data is Crown Copyright©. The data were acquired and processed by Wessex Archaeology. The marine geophysical surveys targeted a total of nine suspected wreck locations in Milford Haven area, off the coast of South Wales, seven of which represent the locations for the remains of 19th century Welsh vessels associated with the coal mining industry. Additional survey data were acquired over two 20th century sites within the Milford Haven, the Thor and the Sunderland. The acquisition of these data aimed to assist RCAHMW maritime team and the Sunderland Trust with on-going archaeological research and fund-raising. The marine geophysical surveys also targeted a total of ten suspected and known wreck site locations off the coast of Lleyn peninsula in North Wales. These included eight unconfirmed positions of 19th century Welsh vessels associated with the slate mining industry, two designated sites the Diamond and the Tal-Y-Bont, and the marine hazard of St Patrick’s Causeway with the aim of discovering new wreck sites. The project aimed to acquire marine geophysical data consisting of high resolution sidescan sonar and magnetic gradiometer data over a total of total of 21 known and suspected wreck positions and along the known marine hazard of St. Patrick’s Causeway. Since the sites were located in two different areas, they were surveyed during two separate surveys from the Pembroke based vessel Blue Shark. The first session surveyed sites mostly off Milford Haven in south Wales between 17th and 18th April 2010. The second session surveyed sites off the coast of Lleyn peninsula and along St. Patrick’s Causeway in north Wales between 23rd April 2010 and 2nd May 2010 with a day of mobilisation and a day of demobilisation at the start and end of the survey session. The geology and geophysics component of the data are archived at British Geological Survey (BGS) MEDIN Data Archive Centre (DAC) for Geology and Geophysics. Data were also provided to other archive centres as appropriate.

Wessex Archaeology was commissioned by English Heritage to undertake a project entitled ‘Wrecks on the Seabed: Assessment, Evaluation and Recording’. The project was supported by that part of the Aggregate Levy Sustainability Fund (ALSF) distributed by English Heritage. The specific aim of this project was to provide industry, regulators and contractors with guidance on the archaeological assessment, evaluation and recording of wreck sites. ‘Assessment, evaluation and recording’ are taken to include various methods of archaeological investigation that are intended to improve the understanding, preservation and appreciation of the historic environment. The term ‘wreck site’ is taken to include the remains on the seabed of both watercraft and aircraft. As part of a variation of this project Wessex Archaeology was commissioned by English Heritage to undertake a geophysical survey of four designated historic wrecks (A1 submarine, Hazardous, Invincible and Mary Rose) which focussed on the development and testing of methodology for rapid in situ recording using geophysical techniques. The geophysical survey included the use of multibeam echosounder, magnetometer and sub bottom profiler. The survey was undertaken from the 12.5 m Aquastar survey vessel Emu Surveyor belonging to Emu Ltd between 11th and 26th June 2003. The geology and geophysics component of the data are archived at British Geological Survey (BGS) MEDIN Data Archive Centre (DAC) for Geology and Geophysics. Data were also provided to other archive centres as appropriate.

Not Entered

The Institute of Geological Sciences now British Geological Survey (BGS) were invited by French institutes BRGM and CNEXO to participate in a magnetic and shallow seismic survey in the English channel between Cherbourg and Falmouth on the first operational cruise of the new French oceanographic ship Noroit in August 1971.

Report: Deegan, SE. 1975. Cruise Report for survey of the Brent area. MV Aqua Star. MGU Project 75/06. (IGS Report No 61) Navigation: Principal fixing method was by Decca Main Chain, Hordaland Hi-fix and IGS Sat/Nav system. Equipment: Nova Scotia Deep Tow Sparker and IGS multi-tip sparker. Edo Western pinger. Atlas Deso echo sounder.

This British Geological Survey (BGS) marine geophysical and sampling survey took place from May to June 1977 in Northern North Sea on board the RRS John Murray. Seabed samples and cores were collected using Shipek grab, Gravity corer and cone dredge. Seafloor data was collected using Transit Sonar (MS47). Subsurface seismic data were collected using a Pingerand Sparker. A geochemical eel was also used. Towed seabed Gamma-ray spectometer demonstation - Report by Miller & Roberts. These data are archived by BGS. Technical details of the survey are contained in BGS Internal Report ??.

Report: Brett, CP. 1981. Operations Report on Project 81/05. A Geophysical Survey in the Eastern English Channel. (IGS Report No 121) There were two objectives of this project, the first being to complete the regional survey of the Dungeness-Boulogne sheet of the IGS 1:250000 map series. The second objective was to carry out a gravity and megnetic survey in the Caen and Rouen sheets, in order to complete the gravity coverage of the entire English Channel. A secondary objective was to run a few isolated gravity lines in Bournemouth Bay and off Dartmouth to fill in small gaps in the existing data.