LOS ANGELES (AP) _ An 80-foot fishing boat collided with a Navy oil tanker nearly seven times its size, injuring seven people on the smaller vessel and causing a small oil spill, officials said today.

The fishing vessel Shogun, a charter boat based in San Pedro, remained afloat despite a 3 1/2 -foot dent in its bow from the collision with the 538- foot tanker Antarctica, said Coast Guard Petty Officer Robert Beals.

The accident occurred about two miles off Los Angeles Harbor Thursday night.

Lifeguards from Long Beach took the 43 people aboard the charter, including six crew members, to shore in rescue boats, said Chief Petty Officer Mark Kennedy. One woman was knocked overboard by the collision, but was picked up by a passing vessel, said Petty Officer Steven Dickerson.

Shogun second mate Tim Filson, who injured his neck while at the helm, was in good condition at St. Mary's Hospital in Long Beach today, said nursing supervisor Todd Brabbin. He said three others were treated and released.

Three people who suffered minor injuries were treated at the scene, Kennedy said.

The collision caused a 1,680-gallon fuel spill about 100 yards square that Beals said was quickly contained.

The Antarctica, owned by the Irving Trust Co. of New York, operates under charter to the Navy to transport jet fuel, Kennedy said. It was headed for San Francisco with a merchant marine crew of 24 and carrying 7.8 million gallons of jet fuel.

After the crash, the tanker returned to Long Beach Harbor, Kennedy said. The damaged Shogun also was returned to port.

Coast Guard investigators were dispatched to determine why the two vessels collided, Kennedy said. He said seas were calm and visibility was good at the time.

The Shogun is owned and operated by Richard Rogers of Torrance and is chartered by Shogun Sports Fishing of San Diego, he said.