ok....Rubber had an awesome day

 So its just an ordinary ship then Big O ?
Yep, I believe a ice breaker wouldn't have one (a bulb) so they would slide up on the ice, then the weight of the ship breaks the ice.  Maybe.
yer right Big O...I remember seein' a documentary on them.
 I always thought that the ship cut thru the ice, but thats not the case .
you been watchin too many cartoons... btw, revisit your spacely space sprockets thread.
OK Not my best work by any means...Watch this space for somthin better...

Haybusa.org, like this...