The IRCG also operate a number of contracted Sikorsky Search and Rescue helicopters from bases in Dublin, Waterford, Shannon and Sligo. These helicopters are contracted from CHC Helicopter - a contract which was controversial and costs the state €50 million per year. A similar SAR contract involving CHC was cancelled in the UK in 2012 as a result of alleged 'irregularities'. Under the €500 million contract, from 2010, a previous fleet of Sikorsky S-61N helicopters were replaced with five newer Sikorsky S-92 helicopters. One of the new S-92 helicopters is located at each of the four IRCG bases, with one additional aircraft being rotated between bases.