Harry O (1973)

Harry Orwell is a world-weary private investigator who was forced to leave the San Diego Police Department after a bullet became lodged near his spine. He lives on the beach, and when he's not working on cases he spends his time fixing up his boat, "The Answer." Harry O is unusual in that he doesn't own a flashy car in which to conduct high-speed chases, preferring to ride the bus.