Shipbreaker (creature)

Shipbreaker is a unquiet version of the Fog crawler creatures, which appear in the Fallout 4 add-on Far Harbor.

Characteristics
It is a legendary version of the Fog crawler, and is only appears during the quest Shipbreaker (quest). After the quest is complete, Old Longfellow will award you with Skipper's Last Stand a unique version of the Harpoon gun.