How does the author's choice to end the poem with Sir Ralph the Rover's ship sinking contribute to its aesthetic impact?
Responses

Since Sir Ralph cannot enjoy the riches he's gained, it ends the poem on a mournful note.
Since Sir Ralph himself is the one who sabotaged the bell, it ends the poem on an ironic note.
Since the Abbot of Aberbrothok cannot do anything to save Sir Ralph, it ends the poem on a despairing note.

Since the other sailors on Sir Ralph's ship were wholly innocent, it ends the poem on a tragic note.