USS Crux (AK-115) was a Crater-class cargo ship, converted from a Liberty Ship, commissioned by the US Navy for service in World War II. She was first named after Peter Stuyvesant, a Dutch politician that served as the last Dutch director-general of the colony of New Netherland from 1647 until it was ceded provisionally to the English in 1664. She was renamed and commissioned after Crux, a constellation centered on four stars in the southern sky in a bright portion of the Milky Way. She was responsible for delivering troops, goods and equipment to locations in the war zone.

The St. Johns River Shipbuilding Company was created in Jacksonville, Florida during World War II to build Liberty ships.