Several people working on a navy ship at the General Dynamics NASSCO shipyard were taken to local hospitals after suffering smoke inhalation, authorities said Sunday. The USS Harpers Ferry landing ship dock was undergoing maintenance when the incident occurred shortly after 7 p.m. Saturday at the East Harbor Drive facility, adjacent to Naval Base San Diego. Stream San Diego News for free, 24/7, wherever you are with NBC 7. Several personnel were affected with mild to moderate smoke inhalation," a NASSCO spokesman told City News Service on Sunday. The San Diego Fire Department told NBC 7 that 11 people were treated for mild to moderate smoke inhalation.