Before our friendship parted, I held private correspondence with Eric Sauder, perhaps, along with his brother Bill, the most knowledgeable LUSITANIA historians alive today. I recall Mr. Sauder sharing with me...the DELTA submersible was trapped on the wreck by a fishing net, the LUSITANIA is strewn with these, anyhow they had to eject the propellor cowling so as to regain ascent to the surface w/DELTA submarine. Subsequently, if I recall correctly, divers recovered the cowling. It resides as part of Mr. E. Sauder's LUSITANIA collection.
Yeah, but there wouldn't be anything especially unusual or even sinister about finding them around the wreck. It's been mentioned that the Royal Navy frequently used the wreck as a target during anti-submarine warfare exercises during the Second World War. I wouldn't be surprised if they did the same with a few other wrecks as well.
Since the ship is a notible historic wreck and since much of it has been bombed and collapsed by the natural force of the ocean, I would suggest a sane, efficient peeling away of the hul and recovery of anything recognizable for a traveling exhibit, such as "Titanic's". Cargo, furnishings, ship fittings, are all of key interest to the general public. I see no historic value nor respect for the dead, by letting it settle into a mass of iron oxide on the seabed. If there were people inside her when she sank, I guarantee you, they are no longer sitting around having a mid-afternoon tea. Tell their story; it's their ship.