Other things have been known to sink on contact with ice, however. No, Birdie; it was that moustache that prompted me to use Sir Cosmo as my avatar, not his unfortunate Atlantic experiences. I should like to say, though, that he was one of the survivors.
Personally I think that our problem is more likely to be the looming mass of
The Two Towers, which some sharp-eyed lookouts are even now announcing to the Officer of the Watch.
[EDIT: The avatar reference is to an old black-and-white photograph of
Sir Cosmo Edmund Duff-Gordon, fifth baronet, which used to be on
Encyclopaedia Titanica. I'd had no avatar before that, hence the interest.]