Inshore lifeboat launched at 1318 to a Jet Ski broken down and aground in Horse Reach in the Swale, 2 persons on board. ILB located the casualty, a towline was passed and the Jet Ski with the two persons on board, was towed back to the causeway in Queenborough harbour, where it was recovered to its trailer. Both person were checked out by Ambulance crew. ILB returned to station at 1523. SW 4/5.