CSS Resolute was a tugboat built in 1858 at Savannah Georgia as the Ajax[1] which served in the Confederate States Navy during the American Civil War.

Resolute entered Confederate service in 1861 and operated as a tow boat, transport, receiving ship, and tender to the sidewheeler CSS Savannah on the coastal and inland waters of Georgia and South Carolina.

On 5–6 November 1861, Resolute, under Lieutenant John Pembroke Jones, CSN, in company with CSS Lady Davis, CSS Sampson, and Savannah, under the overall command of Flag Officer Josiah Tattnall III, CSN, offered harassing resistance to a much larger Union fleet preparing to attack Confederate strongholds at Port Royal Sound, S.C. During November 7, while Resolute had been sent to Savannah with dispatches, the Union fleet under Flag Officer Samuel Francis du Pont, USN, pounded the Confederate Fort Walker and Fort Beauregard until they were abandoned.

On January 28, 1862, accompanied by Sampson and Savannah, she delivered supplies to the fort despite the spirited opposition of Federal ships.

She was captured on the same day by soldiers of Company F of [2] the 3rd Wisconsin Veteran Infantry, commanded by Captain Charles Ransom Barrager, under Colonel W. Hawly, USA, in the army of General William T. Sherman, and destroyed.