Gw mau tau USCG Designations dari Simbol pengelasan badan kapal. Jelasin dalam bahasa melayu

Naval History and Heritage Command Online Library of Selected Images: U.S. Navy Ships – Listed by Hull Number: "SP" #s and "ID" #s — World War I Era Patrol Vessels and other Acquired Ships and Craft

Wertheim, Eric. The Naval Institute Guide to Combat Fleets of the World, 15th Edition: Their Ships, Aircraft, and Systems. Annapolis, Maryland: Naval Institute Press, 2007. . .