Eastern Sea Frontier
The Eastern Sea Frontier (EASTSEAFRON) was a United States Navy operational command during World War II, that was responsible for the coastal waters from Canada to Jacksonville, Florida, extending out for a nominal distance of two hundred miles. The Commander was designated Commander, Eastern Sea Frontier (COMEASTSEAFRON). COMEASTSEAFRON had vessels for convoy use or other uses determined by the commander. In addition to providing escorts for convoys within its frontier, the frontier was responsible for sea-air rescue, harbor defense, shipping lane patrol, minesweeping, and air operations.
On 14 January 1941, orders were issued to transfer Rear Admiral Andrews from his command as Commander, Scouting Force, United States Fleet to a new command as Commandant, Third Naval District. These orders were modified under date of 1 March 1941, giving Admiral Andrews additional duties as Commander, North Atlantic Naval Coastal Frontier. When he relieved Rear Admiral C. H. Woodward on 10 March 1941 for the first time the Commandant, Third Naval District was also designated as Commander, North Atlantic Naval Coastal Frontier.
The preparation of operation plans, which had been laid down in WPL-42 and in Navy Basic War Plan, RAINBOW No. 3 (PL-44), the latter having been promulgated in December 1940 was continued and on 16 March 1941 the first Operation Plan: North Atlantic Naval Coastal Frontier Plan 0–4 (RAINBOW 3), with the short title, NA-NCF-44 was issued. This Plan set up the proposed Staff of the Commander, North Atlantic Naval Coastal Frontier, which consisted of the following: Chief of Staff, Operations Officer, Shipping Control Officer, Air Officer, First Army Liaison Officer Intelligence Officer and Communication Officer. It also provided for the Command Relations and the plans for coordination with the Army Commander. Nevertheless, at this time, no officers were immediately available to fill these commands.
On 3 April 1941, a second plan was issued to modify NA-NCF-44 in such a way as to make it applicable to the concept of war outlined in "RAINBOW No. 1." This modification was entitled, North Atlantic Naval Coastal Frontier Plan O-4 (RAINBOW No. 1), with the short title, NA-NCF-42. On 22 April 1941, a third plan was issued: the original Operation Plan for the Forces of the North Atlantic Naval Coastal Frontier. This plan was designated, "Operation Plan, NA-NCF-1-41." Because of the restricted nature of problems concerned with the organization of task forces and task groups within a naval coastal frontier, this aspect is considered in a separate section. It may suffice to state briefly, here, that at this time, task forces were not created. When the Navy Basic War Plan, RAINBOW No. 2 (WPL-46) was issued in May 1941, important directives were contained therein as to the eventual organization of task forces and command relations in the naval coastal frontiers; nevertheless, these directives merely outline the structure of an organization which would not be created until a later order was issued.
WPL-46 had incorporated the structure of task forces as they had been ordered by General Order No. 143, issued 3 February 1941. On 1 July 1941, the Chief of Naval Operations formally ordered the establishment of naval coastal frontiers, thus transforming them from their theoretical status; but added in the same dispatch, "For the present, Naval Coastal Frontier Forces, as prescribed in General Order No. 143, will not be formed."
On 6 February 1942, the Secretary of the Navy formally changed the names of the coastal frontiers to sea frontiers; thereafter, the North Atlantic Naval Coastal Frontier was designated the Eastern Sea Frontier.
Eastern Sea Frontier's headquarters were located at 90 Church Street in Lower Manhattan. The commander of the Eastern Sea Frontier, until the closing months of 1943, was then-Rear Admiral Adolphus Andrews.
COMEASTSEAFRON had control and responsibility for convoys within its defined area. Convoys from adjacent sea frontiers would continue across sea frontier boundaries. Since the Eastern Sea Frontier coordinated with the Royal Canadian Navy for convoys crossing into the Canadian Coastal Zone, the Eastern Sea Frontier was the "parent" of the contiguous sea frontiers to the south, and COMEASTSEAFRON authority extended beyond its own frontier. COMEASTSEAFRON operational orders could only be appealed to Admiral Ernest King.
COMEASTSEAFRON resources included a blimp airship group at Naval Air Engineering Station Lakehurst, a special convoy air escort group at Naval Air Station Quonset Point, and the Northern, Narragansett, New York, Delaware, Chesapeake, and Southern Air Groups operating from sixteen airfields from Bar Harbor NAAF to Naval Air Station Jacksonville. COMEASTSEAFRON worked closely with the U.S. Army Air Force in the defense of the frontier. Usually, offices of the U.S. Navy and U.S. Army Air Force officers assigned to the frontier, had their offices side by side in order to create effective two-way communications and expedited reaction to reports of enemy presence.
Vice Admiral John S. McCain, Jr. served as Commander, Eastern Sea Frontier, 1965–67, and he was relieved by Admiral Andrew McBurney Jackson, who retired in 1969.
- The Code of federal regulations of the United States of America having general applicability and legal effect in force 1 June 1938: 1st ed., published by the Division of the Federal register, the National archives, pursuant to section 11 of the Federal register act as amended 19 June 1937 (Google eBook)
- Morison, pp.207&208
- Morison, p.248
- Admiral Ernest King, First Report to the Secretary of the Navy: Covering our Peacetime Navy and our Wartime Navy and including combat operations up to 1 March 1944. April 1944, pp. 75–88.
- Samuel Eliot Morison, History of United States Naval Operations in World War II, The Battle of the Atlantic, 1939–1943. ISBN 0-7858-1302-0
- U-boat Archive – Eastern Sea Frontier
- U-boat Archive – Eastern Sea Frontier – War Diary March 1942
- Glossary of U.S. Naval Abbreviations (OPNAV 29-P1000)
- Naval Operations in the Atlantic and Mediterranean to March 1944
- The Battle of the Atlantic
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