During September 2013 the following Maritime Rescue Coordination Centres (MRCC) were staffed below risk assessed levels for the following amount of 'shift time': (a) Humber—408 Hours (34 out of 60 Shifts) (b) Belfast—408 Hours (34 out of 60 Shifts) (c) Liverpool—240 Hours (20 out of 60 Shifts) (d) Swansea—84 Hours (seven out of 60 Shifts) Where there are specific issues at a MRCC Her Majesty's Coastguard are using the current long established pairing arrangements between MRCCs. This enables each MRCC to be connected to at least one other MRCC which is available to provide mutual support.