Admiralty Chart 2878, Approaches to Milford Haven. Ordnance Survey Map 157, St David's and Haverfordwest Area. Shipwrecks Around Wales, Volume 1, by Tom Bennett. Divers' handout from the marine reserve office at Martin's Haven gives essential information on slack water and rules of the marine reserve. Deep and dark.
Good visibility is very uncommon.
There is usually a buoy attached to the bows which makes finding the Lucy easy. Otherwise it is not too hard to locate using transits. The stern rises more than 20m from the seabed, which gives a nice echo, but current, depth and a small target make it difficult to hit with a shot.