What are the pirates chewing in Captain Phillips?

Excuse me, could you elaborate on the specific reference made in the paragraph about Captain Phillips? Are you referring to a scene where pirates are depicted chewing on something specific? If so, could you clarify what it is they are chewing? Is it a type of tobacco, gum, or perhaps something more symbolic or cultural in nature? I'm curious to know if this detail plays any significant role in the story or if it's merely a fleeting moment that adds to the overall atmosphere.