. . . . . . . . "medium Arctic icebreaker" . . "research icebreaker" . . . . . . . . . . . . . . . "Light Icebreaker" . "ice-strengthened" . . . . . . . . . . . . . . . . . . "ice breaking vessels" . . . . . . . "Icebreaker ship" . . . . . . . "icebreaking steamer" . . . . . . . . . . . . "Icebreaking" . . . "icebreaking tug" . . . "Heavy icebreaker" . . . . . . . . . . . . . "icebreaker ship" . . . . . . . "Light icebreaker" . . . "icebreaking ship" . . . . . . . . . . "Heavy Arctic Icebreaker" . . . . . . . . . "Modern icebreaker" . "ice-breaking" . . . . . . . . . . . . . . . "ice-capable" . "icebreaker" . . . . . . . . . . . . . . . . . "icrebreaking" . . . . . . . . . "icebreaking" . . . . . "ice operations" . . . . . . . . . . . . . "Shallow-draught icebreaker" . . "Icebreaker/support vessel/offshore patrol" . . "icebreaking steamers" . . . . . "Icebreaker" . . . . . . . "Medium icebreaker" . . . . . "Ice breaker" . . . . . . . . . . . . "icebreakers" . "ice breaking" . . . . . . . . . "Ice-breaking" . . . "icebreaking ships" . . . . "water deluge system" . . . . "Icebreaker" . "ice-breaking bow" . . . . . . . . . . "Ice Breaker" . . . . . . . . . "Ice operations" . . . . . "icebreaking hull" . . . . . . . . . . . . . . . "light icebreaker" . "Ice Breakers" . . "ice patrol ship" . . "Icebreakers" . .