sentences:  Bristow S61N's were responsible to carry out SAR tasks, operating from Den Helder Airport on behalf of the oil and gas industry.On 26 March 2013, Bristow was awarded a 10-year contract to operate the search and rescue operations in the United Kingdom, at the time being provided by CHC Helicopter (on behalf of Her Majesty's Coastguard), the Royal Air Force and the Royal Navy.Bristow is currently operating AgustaWestland AW189 and Sikorsky S-92 helicopters in support of this contract.