British forces arrived on May 4, 1945. In early May 1945, the SS loaded some 9,000-10,000 prisoners -- most of them evacuated from Neuengamme and its subcamps onto three ships anchored in the Baltic Sea off the coast of Neustadt in Schleswig-Holstein. Some 7,000 lost their lives when the British attacked two of the ships in the course of a raid on the harbor on May 3. The Thielbek, carrying about 2,000 prisoners, sank quickly. The Cap Arcona, carrying more than 4,500 prisoners, burned and capsized during the attack. Only about 600 prisoners from both ships survived.