San Francisco ? Nine people suffered minor injuries when a ferry crashed into a pier in a bustling tourist area Saturday, authorities said.

The Baylink ferry, carrying 138 people, plowed into Pier 43 in the city’s Fisherman’s Wharf district about 4:20 p.m., according to city fire officials.

The boat had just left Pier 41 and was heading to Vallejo when it apparently lost control of its steering and veered into the wood pilings of nearby Pier 43.

The exact cause of the crash remained under investigation.