The Motor Rangers on Blue Water: The Secret of the Derelict

In The Motor Rangers on Blue Water: The Secret of the Derelict by John Henry Goldfrap, Nat Trevor and his companions plan to transport valuable sapphires by motorboat, unaware they are being watched by outlaws. As they sail aboard the Nomad, danger mounts with pursuit, storms, and a mysterious derelict vessel. Courage and teamwork guide them through intrigue and peril at sea.