Firefighters extinguished a fire that heavily damaged an unattended 22-foot Boston Whaler at the Waikiki Yacht Club.

Six companies and 23 firefighters responded to the yacht club at 1599 Ala Moana Boulevard shortly after 7:30 a.m. today. When they arrived, firefighters observed the motorboat moored to the dock and engulfed in flames.

Firefighters used compressed foam and brought the blaze under control by 7:58 a.m. and extinguished by 8:04 a.m., said Honolulu Fire Spokesman Capt. David Jenkins.

No injuries were reported. Jenkins said the boat was considered to be a “total loss.”

No damage was reported to other vessels and no fuel leaks were detected.

The cause of the fire is under investigation and a damage estimate has yet to be determined.

The Department of Land and Natural Resources which has jurisdiction of the Ala Wai Boat Harbor used by the yacht club has also responded.