(U.S. Coast Guard Photograph.) black-and-white photos Hall PH-2 Flying Boat March 11, 2017by Lone_Sentry_Admin1 min read A Hall PH-2 flying boat operated by the U.S. Coast Guard before and during World War II for search and rescue, patrol, anti-submarine missions. (U.S. Coast Guard Photograph.) (U.S. Coast Guard Photograph.)