While the story doesn't explicitly portray him as a "villain" in the traditional sense, his actions and choices directly lead to the tragedy that unfolds. He is responsible for the death of the young boy, Jeremy, and his actions cause significant emotional distress to Brady and his family.
Here's why Mr. Digby is considered the antagonist:
* Negligence and recklessness: Mr. Digby's disregard for safety regulations and his insistence on using his boat even in rough waters lead to the accident that claims Jeremy's life.
* Lack of accountability: He initially tries to deny responsibility for the accident and attempts to shift the blame onto others. This further contributes to the pain and anguish of those involved.
* Impact on Brady: Mr. Digby's actions have a profound impact on Brady's emotional well-being, leaving him with feelings of guilt, anger, and helplessness.
Though Mr. Digby's intentions may not have been malicious, his choices and actions ultimately result in a tragic outcome and make him the central antagonist in the story.