YORKTOWN, Va. - Coast Guard crewmembers train aboard a 38-foot Special Purpose Craft - Training Boat while at Training Center Yorktown's Boatswain's Mate Apprentice School, here Jan. 20, 2011. The SPC-TBs have replaced 41-foot Utility Boats as a training platform for the base's students. U.S. Coast Guard photo by Petty Officer 1st Class Mike Sanborn.