Operation Hannibal was the naval evacuation of German troops and civilians from
East Prussia and the
German-occupied Baltic states as the
Red Army advanced from the east.
Wilhelm Gustloffs final voyage was to evacuate civilians, German military personnel, and technicians from
Courland,
East Prussia, and
Danzig-West Prussia. Many had worked at advanced weapon bases in the Baltic from Gotenhafen to
Kiel. The ship's complement and passenger lists cited 6,050 people on board, but these did not include the many individuals who boarded the ship without being listed in the official embarkation records. Heinz Schön, a German
archivist and
Gustloff survivor, researched the sinking during the 1980s and 1990s. He concluded that the ship was carrying a crew of 173 (naval armed forces auxiliaries); 918 officers,
NCOs, and men of the 2nd Submarine Training Division; 373 female naval auxiliary helpers; 162 wounded soldiers; and 8,956 civilians, for a total of 10,582 passengers and crew. The ship was overcrowded, and due to the high temperature and humidity inside, many passengers defied orders not to remove their
life jackets. Besides ethnic Germans, the people on board included Lithuanians, Latvians, Poles, Estonians, and Croatians, some of whom had been victims of Nazi aggression. The ship left
Gotenhafen at 12:30 pm on 30 January 1945, accompanied by two
torpedo boats and another evacuation transport,
Hansa.
Hansa and one torpedo boat were soon disabled by mechanical problems, leaving
Wilhelm Gustloff with just one torpedo boat escort,
Löwe (ex-). The ship had four captains on board (the
Wilhelm Gustloff's captain, two
merchant marine captains, and the captain of the U-boat complement housed on the vessel); this resulted in heated arguments about how to guard the ship against Soviet submarines. Against the advice of the U-boat commander,
Lieutenant Commander Wilhelm Zahn (an experienced submariner who argued for a course in shallow waters close to shore and without lights),
Wilhelm Gustloff's captain, Friedrich Petersen, turned the ship into deep waters. Upon being informed by radio of an oncoming German
minesweeper convoy, Petersen ordered that the ship's red and green
navigation lights should be turned on so as to avoid a collision in the dark, making
Wilhelm Gustloff easy to spot. As
Wilhelm Gustloff had been fitted with
anti-aircraft guns, and the Germans did not mark her as a hospital ship, no notification of her operating in a hospital capacity had been given. Since she was transporting military personnel, she did not have any protection as a hospital ship under international accords.
Sinking Wilhelm Gustloff was soon sighted by the , under the command of Captain
Alexander Marinesko. The submarine sensor on board the escorting torpedo boat had frozen, rendering it inoperable, as had her anti-aircraft guns, leaving the vessels defenseless. Marinesko followed the ships to their
starboard (seaward) side for two hours before making a move, surfacing his submarine and steering it around
Wilhelm Gustloffs stern, to attack it from the port side closer to shore, from where the attack would be less expected. At around 9:00 pm (
CET), Marinesko ordered his crew to launch four torpedoes at
Wilhelm Gustloffs port side, about offshore, between
Großendorf and
Leba. The three torpedoes that were fired successfully all struck
Wilhelm Gustloff on her port side. The first struck the ship's
bow; this caused the ship's watertight doors to lock before the sleeping off-duty crew could escape. The second hit the accommodations for the women's naval auxiliary, located in the ship's drained swimming pool. It dislodged the pool tiles at high velocity, which caused high casualties; only three of the 373 women quartered there survived. The third torpedo scored a direct hit on the
engine room located , disabling all power and communications. Reportedly, only nine lifeboats could be lowered; the rest had frozen in their
davits and had to be freed with tools. About twenty minutes after the torpedoes' impact,
Wilhelm Gustloff suddenly
listed so dramatically to port that the lifeboats lowered on the high starboard side crashed into the ship's tilting side, sending their occupants into the sea. Less than forty minutes after being struck,
Wilhelm Gustloff was lying on her side. She sank bow-first ten minutes later, in of water. German forces were able to rescue 1,252 people: the torpedo boat rescued 564; the torpedo boat
Löwe, 472; the minesweeper
M387, 98; the minesweeper
M375, 43; the minesweeper
M341, 37; the steamer
Göttingen, 28; the torpedo recovery boat (
Torpedofangboot)
TF19, 7; the freighter
Gotenland, two; and the patrol boat (
Vorpostenboot)
V1703, one baby.
Losses The figures from Heinz Schön's research make the loss in the
Wilhelm Gustloff sinking to be "9,343 men, women and children". His more recent research is backed up by estimates arrived at by a different method. An
Unsolved History episode that aired in March 2003, it estimated that 9,600 people died of the more than 10,600 on board, by taking into account passenger density based on witness reports, and a simulation of escape routes and survivability with the timeline of the sinking. ==Aftermath==