Distressed sailors and struggling swimmers. If you are in trouble at sea - they will be there to help you.
And this summer Kent and Essex had the UK's busiest coastal RNLI lifeboat stations - at Southend on Sea and Ramsgate.
But with the worst summer on record for 100 years - why have call outs soared in some areas? Sarah Saunders has been finding out.
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Monday evening's weather for the east of the region
Monday evening's weather for the west of the region
Monday's lunchtime weather for the east of the region