Ravagers (1979)

In the aftermath of a nuclear holocaust, animal-like creatures known as "the ravagers" roam the earth and kill all survivors. A man named Falk (Richard Harris) witnesses his wife's murder by the creatures. Seeking vengeance, Falk becomes a vigilante. He joins a small community, led by Rann (Ernest Borgnine), living aboard a ship anchored off shore. The ship is destroyed in an attack by the ravagers. Falk then leads his fellow survivors on a desperate quest for a place where they can live in peace.