“…They can allow an icebreaker to make observations otherwise impossible, for example resolving horizontal ocean structure in high resolution, or making measurements under multi-year ice, where an ice-breaker cannot penetrate. However, prior to the ALTEX cruise, Arctic AUV operations under ice had been conducted from ice camps not from ice-breakers [5,6,7,8]. \The ALTEX AUV was conceived as a platform capable of operating independent of a ship over ranges up to 1500 km in the Arctic basin [1].…”