NewsRadio 920 WHJJ and the Associated Press

CRANSTON, R.I. (AP) — Investigators are trying to determine what caused a fire that destroyed six boats over the weekend at the Rhode Island Yacht Club in Cranston.

Seven people had to be rescued by boat from the docks after becoming trapped by the blaze late Saturday night.

The fire started at around 11:30 p.m. off Ocean Avenue and jumped from boat to boat.

Cranston fire officials say 41 firefighters used seawater and foam to fight the fire, which took more than three hours to bring under control.

Cranston Deputy Fire Chief Paul Valletta tells the Providence Journal that firefighters were forced to use their oxygen packs outside to deal with fumes from the burning fiberglass and diesel fuel.