DBWI: What if the Allies hadn't built the ice carrier in WWII

What if the Allies didn't build the ice carrier in WWII? I'm pretty sure they still would have won, but would it have been harder? Or was it just a waste of resources?

OOC: Sorry I couldn't find a good link, I'm hoping enough of you know about this. Also, my first DBWI so I hope I did it right.
 
I dubt the German submarines would have had much influence anyway gien the cracking of the Enigma code.
 
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