The Thesis is a wreck of a 19th-century steamship that sank in 1889 in the Sound of Mull. From 1994 to 2005 the Sound of Mull archaeological Project run by the Nautical Archaeology Society planned the wreck out in detail and undertook a sidescan sonar survey.
Wessex Archaeology visited the wreck briefly during the 2014 and 2015 fieldwork season of project SAMPHIRE and noted that the external hull of the bow structure had collapsed inwards. After some investigation it was decided that this was mainly due to natural degradation rather than dredging damage!
You can read all about the wreck in the Project SAMPHIRE report and on the Lochaline dive centre page about the wreck!