D-ring shackle made of iron, used to support the spar boom as part of the spar torpedo system, uncovered from suction pile excavation area about 2.3 m forward and to starboard of bow. Images show shackle following excavation with thick and compact shell and sediment concretion, x-ray photograph of shackle, and shackle following deconcretion, conservation treatment with caustic solution, and cleaning.
Bull's eye lantern, made of iron, with convex glass lens. Images show concreted lantern during excavation of the submarine interior, x-ray photograph of the lantern, and lantern following and extensive cleaning and conservation treatment.
Iron tool handle cast in a T-shape, with a square end. Images show the tool following removal from the submarine but prior to deconcretion, x-ray photograph of the tool, and the tool following deconcretion and conservation treatment with subcritical fluid technology.
