Teshio (PM 15)
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Teshio (PM 15) is an active deep sea icebreaker owned and operated by the Japan Coast Guard.[1][2][3] Classified as a medium-patrol-vessel, the ship is capable of icebreaking and ice navigation in winter waters around Hokkaido and similar seas.[3] The ships ice resistance capability has been studied and published ice model testing made available based on sea trials.[4]