Storm Warning by Jack Higgins
The Deutschland was a nineteenth century three-masted saling ship. In August 1944, with Germany on the verge of defeat, she set off from Brazil to cross the enemy-infested Atlantic. Aboard were a twenty-two man crew and a party of fleeing nuns. This is the true story of her last voyage and the harrowing chain of events that briefly united friend and foe against man's oldest enemy - the sea.