SAN FRANCISCO (KCBS) — Police are investigating a boat crash that happened early Wednesday morning along a pier in San Francisco’s Mission Bay neighborhood that left one man dead.

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An emergency dispatcher told KCBS that a call was received at 6:13 a.m. that a boat was in distress at Pier 52, south of AT&T Park,

Upon their arrival, fire department crews were only able to find a floating debris field and the man’s body, the dispatcher said.

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Police said that witnesses told them the boater was trying to motor up to the pier but accidentally hit the throttle slamming the 18-foot boat into the abandoned pier and then spun out of control. The boat, a 1959 Dorsett, then disintegrated and sunk..

A friend of the victim said the man was a longtime boater, who liked having big engines in his boats, but didn’t have a kill-switch aboard.

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At about 7:30 a.m., the fire department retrieved the man’s body and the police department’s marine unit was on the scene to gather debris and investigate.