"At Sea", the final act, follows Hudson and a team of irregulars aboard their boat as they track and pursue survivors of a sunken German U-boat along the Jardines del Rey archipelago on the northern coast of Cuba. Hudson becomes intent on finding the fleeing Germans after he finds they massacred an entire village to cover their escape. The novel ends with a shoot-out and the destruction of the Germans in one of the tidal channels surrounding Cayo Guillermo. Hudson is presumably mortally wounded in the gun battle, although the ending is slightly ambiguous. During the chase, Hudson stops questioning the deaths of his children. This chapter rings heavily with influences of Hemingway’s earlier work "For Whom the Bell Tolls".