ARCTIC OCEAN (March 18, 2007) - Los Angeles-class fast attack submarine USS Alexandria (SSN 757) is submerged after surfacing through two feet of ice during ICEX-07, a U.S. Navy and Royal Navy exercise conducted on and under a drifting ice floe about 180 nautical miles off the north coast of Alaska. U.S. Navy photo by Chief Mass Communication Specialist Shawn P. Eklund (RELEASED)
Перевод не требуется?
дело было в 180 морских милях от северного побережья Аляски - лед был 2 фута, что есть 60 см.