Well not exactly that, but it was part of a ship that ran itself aground in a storm to avoid sinking. It was carrying rice and the rice got wet and expanded and ruind the ship. Then they ended up blowing the ship up to get rid of it and these are the remains. I guess when they blew it up, someone was a little dynomite happy and peices went flying into town too.
A little info I copied off the internet
CALLIE
The Callie was said to have been carrying a cargo of grain when she ran aground in1944. As the grain absorbed sea water that was leaking in, it quickly expanded and caused the doom of the ship. Since the Callie had become a serious hazard to navigation in the area, it was decided in 1957 that the British Army Corp of Engineers would blow her up. The Callie now lies scattered over a very large area just inshore from the Balboa and about 100 feet from shore in 20 feet of water.