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Talk:Icebreaker

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This is an old revision of this page, as edited by 212.30.195.50 (talk) at 20:18, 21 December 2006 (→Heavy- vs Normal vs Light-Icebreaker definition?). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Video

Here is a video from the USCG which demonstrates icebreaking in action. It's from a USCG member while in the course of his duties so it's PD but it's in AVI format and I have no way to reformat it to the codec we are allowed to use here. It's pretty cool though. Nrbelex (talk) 22:07, 29 June 2006 (UTC)[reply]

Heavy- vs Normal vs Light-Icebreaker definition?

When is a icebreaker a heavy breaker and when is it light? Both Canadian and US icebreakers have been categorized in this way, but no other icebreakers. As far as I could tell this has to do with the Ice Class. Heavy meaning it can handle Ice Class 1A Super (extremely difficult ice-conditions) or just 1A (difficult ice-conditions) and light meaning it can only handle Ice Class II (very easy ice-conditions). I've been unable to find any good sources to confirm this though, but I think it would be nice to definition the Ice Classes.

By merging the above page and this SAFETY OF WINTER NAVIGATION IN THE BALTIC SEA AREA, I've come up with this table. I want to better sources and shrink it down before putting it in though.
Ice Class Extremely difficult ice-conditions Difficult ice-conditions Moderately difficult ice-conditions Easy ice-conditions Very easy ice-conditions
Finnish-Swedish Ice Class Rules IА Super IА IB IC Category II
Russian Maritime Register of Shipping (Rules 1995) UL L1 L2 L3 L4
Russian Maritime Register of Shipping (Rules 1999) LU5 LU4 LU3 LU2 LU1
American Bureau of Shipping IАА IА IB IC D0
Bureau Veritas IA SUPER IА IВ IC ID
CASPPR, 1972 А В С D E
China Classification Society Ice Class B1* Ice Class B1 Ice Class B2 Ice Class B3 Ice Class B
Det Norske Veritas ICE-1А* ICE-1А ICE-1B ICE-1С ICE-C
Germanischer Lloyd Е4 Е3 E2 E1 E
Korean Register of Shipping ISS IS1 IS2 IS3 IS4
Lloyd’s Register of Shipping 1АS 1A 1B 1C 1D
Nippon Kaiji Kyokai IA Super IA IB IC ID
Registro Italiano Navale IAS IA IB IC ID
Approximate correspondence between Ice Classes of the Finnish-Swedish Ice Class Rules (Baltic Ice Classes) and the Ice Classes of other Classification Societies
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