HMHS Britannic, the largest ship lost during the First World War, sank after striking a mine on November 21, 1916. The ship was a notable sister of the ill-fated RMS Titanic and served primarily as a hospital ship during the war. It was designed with advanced safety features, but its fate was sealed when it struck a mine laid by the German submarine SM U-73 in the Aegean Sea. As the Britannic was making its way to serve medical needs in the Mediterranean, the mine detonated, causing catastrophic damage to the ship's hull. The disaster occurred while navigating near the island of Kea, Greece.The sinking of Britannic was marked by the swift and commendable response from its crew. Despite its size and the chaos of the explosion, they managed to organize an orderly evacuation. Lifeboats were deployed, and crew members directed passengers to safety. In what could have been a much higher casualty event, 1,065 individuals were aboard, and the majority were successfully rescued, showcasing the effectiveness of maritime evacuation procedures. The ship sank within an hour, emphasizing the perilous conditions of naval operations during the conflict.As a hospital ship, Britannic's destruction raised concerns about the protection of medical vessels and contributed to debates about maritime law and warfare ethics. Its loss was a significant blow to both the British naval fleet and the medical support system during World War I, leading to further changes in hospital ship protocols and naval strategy in the region.