Because , If you sink the CV, doesn't mean you kill all it's men.
Sheep do act as a floatation device. And one one the first things we ROOKS do is teach our sheep the Sheepstroke, and the breaststroke (for energy conservation) when we sink too far from land. Further more, if we swim to a remote island , we'll... (whispering).. the sheep make fine good viddles. But i agree, there should be alittle more given to the sinker of a CV.\
NUTTZ