The lifeboat helped the crew onboard and towed the RIB to St Peter Port.
Guernsey Coastguard were alerted that a 24 foot RIB had broken down 40 miles west of the island just after 3pm yesterday afternoon (16 August).
The French Maritime Rescue Centre on the Cherbourg peninsula co-ordinated the response.
They used the RNLI's Spirit of Guernsey lifeboat to locate the craft and get its crew onboard - none were hurt.

Image courtesy of Jason Norman, coxswain.
A tow was attached to the RIB and the vessels headed back to Guernsey.
The entire rescue took around six hours.

Guernsey Museums report a 3% increase in visitor numbers
Sewage outfall fixed on Guernsey's east coast
Successful start to Guernsey Ports renewable heating oil conversion
Guernsey's Animal Shelter nurses oiled seabird
Home Affairs needs millions to maintain Guernsey's frontline services
New savings scheme for Guernsey children in care
Alderney celebrates two awards at Britain in Bloom
Guernsey reservoir walk closes due to storm damage