 Complete the following phrase:  After commissioning, Marblehead departed Boston for shakedown in the English Channel and Mediterranean. In 1925, she visited Australia, stopping en route in the Samoan and Society Islands and, on her return, in the Galápagos Islands. A year after her return, Marblehead was underway again on an extended voyage. Early in 1927, she cruised off Bluefields and Bragmans Bluffs, Nicaragua, her mission there to aid 