Yes!
At one time QE2 carried a "Stem" anchor. If you do not know that is the pointy end of the ship where port and starboard sides meet. It was carried as a spare with only a short length of cable attached.
The idea being if you lost one of others then you could do a bit of rigging and still have 2 as required by law.
During a T/A to NY, about 2am during a very stormy night, the OOW saw an awesome fireworks display coming from that area! The stem anchor came loose and away it went. On the way down it punctured 2 holes in the bulbous bow. The bulbous bow was actually used as a ballast tank and was full at the time. The holes were found by divers and repaired temporarily in NY.
Some time after that in Nassau, the ship found an uncharted reef that came out of nowhere and attacked the bulbous bow. More holes!!!!
Bulbous bow was empty for that one. Technically at one point we were sinking after that one, because we were taking on water faster than it could be pumped out. Speed was reduced the bulbous bow filled and we carried on to Everglades where the bow was raised out of the water, pumped out and filled with concrete. Emergency docking in Norfolk to get the holes welded over.
Incidentally, we were in the dry dock next to the Carrier JFK which was being fitted out. No pics please you will be shot!
At our annual dry dock in Southampton, the bulbous bow was cut off and a new one fitted. The old bow was then used for test cranes at Vospers! They estimated it weighed over 100 tons! The stem anchor hawse pipe was covered over and the "spare" spare anchor positioned on 1 deck forward!