Battle of Portland Harbor

The Battle of Portland Harbor was a naval battle of the American Civil War, fought in June 1863, in the waters off Portland, Maine. Two United States Navy warships engaged two vessels under Confederate States Navy employment.

Background
Around June 24, a Confederate raider named the Tacony, under Captain Charles Read, was being pursued by the Union Navy at sea. To thwart their pursuers, the Confederates captured Archer, a Maine fishing schooner out of Southport. After transferring their supplies and cargo onto Archer, the Confederates set fire to Tacony, hoping the Union Navy would believe the ship was destroyed. On June 26, a raiding party entered the harbor at Portland, sailing past the Portland Head Light. The rebels disguised themselves as fishermen and entered into Portland Harbor late in the evening. They planned to slip back out of the harbor and try to destroy the area's commercial shipping capability.

Battle
When the raiders left the port area on June 27, they proceeded to the federal wharf. Having the advantage of surprise, the crew seized a cutter belonging to the Revenue Service, the USRC Caleb Cushing, named after a Massachusetts congressman. Their original intent was to seize a steamer called the sidewheel steamer Chesapeake, but its boilers were cold. Too much time would be needed to get the steam up in her, so they abandoned it for Cushing. They made their escape and fled out to sea. News spread of the Confederate actions and the Army garrison at Fort Preble in nearby South Portland was informed of the rebel intrusion. They had been observed by several persons while taking over the cutter, and public fury was fanned by the incident. Along with soldiers from Fort Preble went a six pound field piece and a 12 pound howitzer. The soldiers, accompanied by a number of civilian volunteers, commandeered the steamer Forest City, a sidewheel cruise ship, and the Chesapeake, whose steam was finally up. All of the civilians on board were issued muskets to defend against the Confederates. Forest City, a faster boat, caught up to Cushing and Archer first.

Cushing opened fire upon Forest City when it was within the 2 mi range of Cushing. The captain of Forest City was afraid to pursue any further. Cushing, being a revenue cutter, had two secret compartments hidden in the captain's stateroom. Captain Read had not discovered the cache of powder and ammunitions that were stored there. If he had, the outcome could have been very different. Chesapeake, which had left port sometime after Forest City with Portland's Mayor Jacob McLellan in command, finally caught up and continued on toward Cushing. The wind was beginning to blow against the Confederate sailors and the steamers soon caught sight of Cushing. Read ordered Cushing torched so the munitions were destroyed by exploding in the cutter after it was abandoned by her twenty-four crewmen escaped in lifeboats. They surrendered to Mayor McLellan and were held as prisoners of war at Fort Preble. Archer was also soon captured and all the rebels were returned to Portland.

Aftermath
It was discovered that the Confederates were in possession of over $100,000 in bonds. These were to be paid after a treaty for peace was ratified between the North and the South. Public anger against the Southerners was high, and additional troops to safeguard the prisoners were requested. They had to be spirited out of Portland during the night to prevent a riot from breaking in July, when they were removed to Boston Harbor, where they were then held at Fort Warren.