Senator Johnston asked the Minister representing the Minister for Defence, upon notice, on 16 January 2012: With reference to the Australian Hydrographic Service: (1) What was the total number of days spent at sea in 2011 by the Leeuwin Class Hydrographic Ships, including how many: (a) of these days related to 'Operation Resolute' (as a number or a percentage of total days at sea); and (b) square nautical miles (or a more convenient unit) were surveyed. (2) What was the total number of days spent at sea in 2011 by the Paluma Class Survey Motor Launches, including how many: (a) of these days specified related to 'Operation Resolute' (as a number or a percentage of total days at sea); and (b) square nautical miles (or a more convenient unit) were surveyed.