Deployment of ITPs 1 and 3

ITP numbers 1 and 3 were deployed in August 2005 in the Beaufort Gyre, as part of the Beaufort Gyre Exploration Program from the Canadian Coast Guard Icebreaker Louis S. St-Laurent. The deployments are described here: "Cruise – 2005 Dispatches – Dispatch 15" and"Cruise - 2005 Dispatches - Dispatch 23".

ITP 1 was deployed on August 15, 2005 at 78.9 N, 150.3 W.  ITP 1 and US Army Cold Regions Research and Engineering Laboratory (CRREL) Ice Mass Balance Buoy (IMB 07949) were deployed on a 4.6 m thick multiyear ice floe. The ITP operated on a sample schedule of 4 one-way profiles between 10 and 760 m depth each day until 8 January 2007, when the profiler memory was filled with 2042 profiles. The unit was retrieved on 8 August 2007 at 74.7 N, 151.4 W.

ITP 3 was deployed on August 23, 2005 at 77.6 N, 142.2 W. ITP 3 and US Army Cold Regions Research and Engineering Laboratory (CRREL) Ice Mass Balance Buoy (IMB 07950) were deployed on a 3.5 m thick multiyear ice floe. The ITP operated on a sample schedule of 4 one-way profiles between 10 and 760 m depth each day until 10 September 2006 when the unit was damaged during an attempted recovery operation near 74.3 N, 135.2 W.