Book excerpt: Under New York City's Throgs Neck Bridge lies a spit of land dominated by a pentagonal, 19th-century fortress that today houses a school that has trained mariners since the age of sail. Within Fort Schuyler's walls are stories of heroism and mutinies, shipwrecks and desertions. In Four Years Before the Mast, author Joseph A. Williams uses his access to archival materials to tell the tale of that institution known today as SUNY Maritime College.