Similar story I remember from the GC, probably in the 70s.
This particular day was a very low tide, & there's a bloke working on one of the trawlers, moored near where SeaWorld is now.
He has a look over the side & spots a long, skinny shape on the bottom. Nobody can work out what it is, so one of them dives in & finds that it's a 500lb (250kg) bomb!
![Shocked :o](http://www.myswag.org/Smileys/classic/shocked.gif)
Called the
![police :police:](http://www.myswag.org/Smileys/classic/police.gif)
, who called Air Force bomb disposal, who came down, lifted it into a rubber raft, towed it out to the middle of the Broadwater, sank it again & blew it. Water spout a couple of 00' high!
Best guess is that a trawler had picked it up out off Straddie, brought it back tangled in their net, eventually got it free, then just dropped it over the side!
![Roll Eyes ::)](http://www.myswag.org/Smileys/classic/rolleyes.gif)
Anybody's guess as to how long it had been sitting there though.