When Moynihan decided to ship out in the Merchant Marines during the summer of his junior year at Wesleyan University, his father, Senator Daniel Patrick Moynihan, was not enthusiastic. As the ship sailed, the orders changed, and 45 days became four months across the equator, around Africa, across the Indian Ocean, and up to Japan--a far more perilous voyage than John or his mother had imagined. 256 pp. Buyer's Choice