In an emergency call 999 and ask for the Coastguard

Whitstable’s Atlantic 85 Lifeboat Lewisco was launched at 16.12pm on Sunday to assist an angling boat with four persons onboard which had broken down with a seized engine in the Swale off Harty Ferry.
The lifeboat crew located the 27-foot craft and took the vessel under tow to a mooring at the Kingsferry Bridge before returning to station at approximately 18.20pm.
This was the lifeboats 13th shout of the year.
Crew: Dave Parry, Rob Judge, Stuart Enderby, Tim Smith
Tractor: Mark Sidders
Launchers: Alex Quin, Neil Pepper