A relative tells this story, it's just something to store in the back of the safety side of your brain as we begin another boating season;
His buddies were walking back to the beach after hunting, they watched an iceberg drift into the anchor line of there boat, push the boat completely down, bow first, and proceed to completely drift right over the top of the boat as it disappeared into the abyss. The END.
I have been up west by the glaciers sight seeing, and on the way back there was an iceberg twice the size of my boat that magically appeared. We didn't see it on the way into the area, where did it come from? I have a photo of it I need to post.
DON'T ANCHOR OR MESS AROUND NEAR THE ICE, GET YOUR ICE FOR YOUR BEER AND MOVE ON!