Firefighters tackled a blaze on two boats in Dockyard last night.Video footage from the fire showed both boats in flames and billowing smoke.Firefighters fought the blaze until both of the fire-damaged boats sank. A spokesman for the Bermuda Fire & Rescue Service said: “At 6.27pm, the BFRS received a call reporting a houseboat on fire at the Dockyard in Sandys.“The BFRS responded with six appliances and a total of 14 firefighters. “On arrival, firefighters found two vessels approximately 50 feet in length completely involved in flames.”It was not known if anyone was on board either of the boats.The spokesman said the cause of the fire was under investigation.The Bermuda Police Service said the it was believed the fire started on one of the boats and spread to the second, which was moored next to it.