(1) Maintaining listening watch on maritime radio frequencies at Maritime Rescue Co-ordination Centres (MRCCs) and Maritime Rescue Sub-Centres (MRSCs) around the UK coast, and by satellite communications at MRCC Falmouth;
(2) co-ordinating maritime search and rescue within the UK Search and Rescue Region; (3) deploying resources to aid persons in distress at sea or on the UK shoreline, including SAR helicopters, RNLI lifeboats and Coastguard Rescue Service volunteers; (4) providing Maritime Safety Information by radio; (5) linking vessels at sea with medical authorities for radio medical advice; and (6) operating the Channel Navigation Information Service (CNIS).