Totalwar,
My apologies, you are quite correct, should have seen the black nose. Doh!
Should have figured it out by the fact that t'was in colour! Wastelands piccies were black and white, bless 'em (I think??? Who cares!).
However, the theory still stands, calm conditions on a blue blue day and it might, with the help of a few dolphins, jelly fish and any other aquatic beast helping, stay afloat for a few nano seconds