ABOVE: A small laboratory area established on shore permitted us to carry out simple measurements such as eH and pH on samples soon after their recovery.

To investigate the processes occurring on the site we employed a number of techniques:

• Bottom drifters were manufactured to standard designs to respond to light or stronger currents.
• Corrosion Potential measurements determine the thermodynamic stability of iron or other metallic artefacts found on the site.
• Stakes monitor oxidation rates of standard steel rods, and can also monitor sedimentation (deposition or erosion). Stakes are long term in all but the most dynamic environments - results from these had to wait until they were recovered in 2003 by the RAF team.
• A small lab set-up allowed us to look at water and sediment quality.