Get involved Dive Trails Bartholomew Ledges Dive Trail The first phase of the Bartholomew Ledges project involved recording high resolution multi-beam data (by MSDS Marine) which was used to model the topography around the site. Phase two of the project involved the collection of photographs and videos to illustrate the virtual tours. This work was undertaken by the Cornwall and Isles of Scilly Maritime Archaeology Society (CIMAS). Public access to the Bartholomew Ledges site is achieved by licence under the Protection of Wrecks Act. This licensing is currently administered by Historic England. The three dive charter boats operating in Scilly have annual licences to visit the protected wreck sites. The Bartholomew Ledge is a granite reef in St Mary's Sound, situated about 600 metres to the south-west of the island of St Mary's in the Isles of Scilly. The top of the reef is less than one metre below chart datum so its location within a busy shipping channel makes it a hazard to shipping. Explore the 3D site plan here and watch the dive videos below. For more information about the site visit the CIMAS webpages and read the Historic England list entry here.