On December 31, 1862, the U.S.S. Monitor sinks in a storm off Cape Hatteras, North Carolina. Just nine months earlier, the ship had been part of a revolution in naval warfare when the ironclad dueled to a standstill with the C.S.S. Virginia (Merrimack) off Hampton Roads, Virginia, in one of the most famous naval battles in American history—the first time two ironclads faced each other in a naval engagement.

After the famous duel, the Monitor provided gun support on the James River for George B. McClellan’s Peninsular Campaign. By December 1862, it was clear the Monitor was no longer needed in Virginia, so she was sent to Beaufort, North Carolina, to join a fleet being assembled for an attack on Charleston, South Carolina.

The Monitor served well in the sheltered waters of Chesapeake Bay, but the heavy, low-slung ship was a poor craft for the open sea. The U.S.S. Rhode Island towed the ironclad around the rough waters of Cape Hatteras. Since December is a treacherous time for any ship off North Carolina, the decision to move the Monitor could be considered questionable.

As the Monitor pitched and swayed in the rough seas, the caulking around the gun turret loosened and water began to leak into the hull. More leaks developed as the journey continued. High seas tossed the craft, causing the ship’s flat armor bottom to slap the water. Each roll opened more seams, and by nightfall on December 30, the Monitor was in dire straits.

The Monitor’s commander, J.P. Bankhead, signaled the Rhode Island that he wished to abandon ship. The wooden side-wheeler pulled as close as safety allowed to the stricken ironclad, and two lifeboats were lowered to retrieve the crew. Many of the sailors were rescued, but some men were terrified to venture onto the deck in such rough seas. The ironclad’s pumps stopped working and the ship sank before 16 crew members could be rescued.

Although the Monitor’s service was brief, it signaled a new era in naval combat. The Virginia’s arrival off Hampton Roads terrified the U.S. Navy, but the Monitor leveled the playing field. Both sides had ironclads, and the advantage would go to the side that could build more of them. Northern industry would win that battle for the Union.