Motor Matt's Defiance; Or, Around the Horn is a juvenile adventure novel by Stanley R. Matthews, first published in 1944. The story follows Motor Matt, a young mechanic skilled in operating submarines, as he embarks on a thrilling journey filled with danger and suspense. After rescuing five Chilean convicts from an overturned boat, Matt and his friends face treachery and challenges from both the convicts and the Chilian Navy, leading to a gripping tale of bravery and cunning on the high seas.
