Atlantic Blockading Squadron

Atlantic Blockading Squadron
Unit name	Atlantic Blockading Squadron
Country	United States
Branch	United States Navy
Type	Naval squadron
Active	1861–1862
Role	Blockade operations
Notable commanders	Flag Officer Silas H. Stringham; Flag Officer Louis M. Goldsborough

Atlantic Blockading Squadron was a Union naval formation created early in the American Civil War to enforce the blockade of Confederate Atlantic ports and shipping lanes. Tasked with interdicting commerce, supporting amphibious operations, and cooperating with Union Army forces, the squadron operated along the eastern seaboard from the Chesapeake Bay to Cape Florida. It served as a precursor to later specialized blockading organizations and influenced naval doctrine during the blockade of Confederate maritime outlets.

Origins and Organization

The squadron was formed under orders issued by Gideon Welles and the United States Navy Department in 1861 as part of the blockade strategy advocated by Abraham Lincoln and codified under the Blockade of Confederate States of America proclamation. Initially commanded by Flag Officer Silas H. Stringham, command later passed to Flag Officer Louis M. Goldsborough, reflecting transfers directed from Washington, D.C. and the Atlantic seaboard administrative structure. Its operational area included key maritime approaches such as the Chesapeake Bay, Cape Hatteras, Cape Fear, and the shipping lanes serving Savannah, Georgia, Charleston, South Carolina, and Wilmington, North Carolina. The squadron was organized into detachments responsible for maritime districts and coordinated with shore-based installations like Fort Monroe and naval yards at Portsmouth Navy Yard (Kittery), Norfolk Navy Yard, Charleston Navy Yard, and Philadelphia Naval Shipyard.

Operational History

From its establishment through the spring of 1862, the squadron conducted patrols, reconnaissance, and seizures of blockade runners operating from Bermuda and The Bahamas, particularly Nassau, Bahamas. It executed combined operations with Army of the Potomac detachments and expeditionary forces dispatched from Fortress Monroe and Hampton Roads. The squadron’s activities intersected with major Civil War events including the First Battle of Bull Run aftermath, the Peninsula Campaign, and operations to secure supply lines for the Union blockade. Interaction with international maritime law concerns involved communications with diplomats at London and Paris regarding neutral ports and prize adjudications in courts such as the United States Circuit Court and admiralty proceedings at Philadelphia. The squadron’s experience informed later reorganization into the North Atlantic Blockading Squadron and the South Atlantic Blockading Squadron, aligning command with operational theaters and reflecting lessons from early blockading operations off Hatteras Inlet.

Major Engagements and Campaigns

The squadron participated in or supported operations connected to the Battle of Hatteras Inlet Batteries, the capture of Hatteras Inlet and its use as a Union base, and the Union expedition against Roanoke Island. It maintained stations during the Burnside Expedition and supported assaults that affected the Outer Banks maritime approaches. Actions against blockade runners involved the capture of vessels attempting to reach Savannah and Charleston, and interdiction of trade linked to ports like Wilmington, North Carolina and Beaufort, North Carolina. The squadron’s patrols were active during Confederate commerce raider threats posed by ships fitted out from Bermuda and Nassau, and during diplomatic incidents implicating British neutrality and the Trent Affair–era tensions over belligerent rights at sea.

Ships and Commanders

Command leadership included Flag Officers Silas H. Stringham and Louis M. Goldsborough, both senior officers with prior service in prewar squadrons and in interactions with naval institutions such as the Naval Academy at Annapolis. Vessel types in the squadron comprised steam frigates, screw sloops, sidewheel steamers, and sailing schooners drawn from fleets at Philadelphia Naval Shipyard, Norfolk Navy Yard, and other yards. Notable ships operating under squadron orders included vessels similar to the USS Minnesota (1855), USS Roanoke (1855), and converted steamers akin to the USS Colorado (1856), alongside smaller steamers and sailing craft suitable for inshore work. Captains and commanders serving in squadron detachments had connections to officers later prominent in blockading forces, and many had prior service during the Mexican–American War or in prewar Pacific and Atlantic squadrons.

Logistics and Tactics

Operational logistics relied on coaling stations, repair facilities at navy yards, and supply depots at captured inlets such as Hatteras Inlet and occupied ports like Port Royal, South Carolina. The squadron employed cruising patterns, cordon-line blockades, and inshore reconnaissance using launches and cutters, integrating signals and flag communications practiced at Hampton Roads. Tactics evolved to counter fast sailing and steam blockade runners by deploying steam-powered pursuers, night watches, and cooperation with local pilots familiar with channels to Wilmington and Charleston. Prize crews delivered captured cargoes to admiralty courts in ports including Boston, New York City, and Philadelphia, where adjudication and disposition were influenced by legal figures and institutions in those cities.

Impact and Legacy

Although short-lived as an administrative unit, the squadron shaped Union blockade implementation and doctrinal development that influenced the effective isolation of Confederate ports through organizations like the North Atlantic Blockading Squadron and the South Atlantic Blockading Squadron. Its operations affected Confederate logistics supporting armies engaged at Richmond, Virginia, Fort Sumter, and along the Piedmont and contributed to pressures that factored into later campaigns such as the Vicksburg Campaign indirectly by limiting Confederate trade. The squadron’s early experiences informed naval reform debates involving figures such as Cornelius Vanderbilt in commercial maritime contexts and influenced postwar discussions in the United States Congress regarding naval expansion and the professionalization of the United States Navy.

Category:Union Navy