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Underwater Photographs, Page 2: Once the site had been located, the next task was to conduct a geophysical survey. During the field school, an AX2000 Proton Magnetometer made by Aquascan International Ltd, was used to survey the site. ADMAT owns one, and an additional back up proton magnetometer was loaned to the project by Aquascan International Ltd. Dr Spooner has been using this proton magnetometer for the last 10 years on projects world wide. This is one of the fundamental tools, and is designed to detect ferrous objects, whether they be on the surface or buried under the seabed. Items such as cannons, anchors and rigging can be detected and pinpointed.
A rectangular area of 500 metres by 600 meters was surveyed, as well as an area to the north of the site. In this survey area there were only two magnetometer hits. The first one was the gudgeons which gave an excellent sign wave. The second was unknown as it is buried under the sand.
The grid was then deployed and constructed underwater by the entire team. |
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| Patrica hand fanning. | Great sea life. | The floors can be seen under the sea grass. |
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| David hand fanning a metal detector hit. | David showing Simon his artefact. | Simon hand fanning. |
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| Jeremy photographs an iron bolt. | The concretion. | Patrica and Guillaume measuring in the find |
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| Patrick ready with the shot buoys | Simon and Roberto with the Magnetometer | David waiting for the survey to start. |
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| David almost ready. | Patrick and Davis with the AX2000. | Karen joins in. |
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| The three launch the fish. | Patrick tunes the AX2000. | Karen starts recording the data. |
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| Karen realises you cant see the screen with polarised glasses on. | Patrick adjusting the settings. | Watching, watching. |
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| The Proton Magnetometer survey begins. | Patrick radioing Capt. "JJ" to launch the buoys. | Capt. Hyatt skilfully helms a parallel grid search box. |
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| Patrick monitoring the Magnetometer cable | A hit! | The display shows the reading for the gudgeon. |
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| Roberto with the second mag. | Patrick and Karen recording the data | Jessica waiting to dive on the hits. |
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| Patrick and Karen running the Proton Magnetometer survey. | ||
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| One of the two gudgeons | Karen with the AC-CESS ROV on the site | Roberto ready to start work. |
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| The two gudgeons were found. | Frank and Guillaume organise the grid deployment. | The 1 metre squares are lowered to the sea bed. |
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| The centre section of the grid mounted on the bow. | Frank having fun undoing all the lashings. | Frank and Guillaume lowing the grid sections on site. |
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| Each square has to be lowered in the numbered order | All hands to the pump. | The final row. |
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| Frank lowers the last square. | Simon and Andy confirm the first section of the grid is in position. | David back on board watches the progress. |
| For the next page, please click on the red arrow below. |
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ADMAT USA's Maritime Archaeological Field School Project Equipment Sponsors & Contributors. We are grateful to the following companies who are assisting with equipment sponsorship for this exciting project. |
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