World War II: The <i id="mw0g"><a class="mw-redirect" href="https://en.wikipedia.org/wiki/KdF_Ship_Wilhelm_Gustloff" id="mw0w" rel="mw:WikiLink" title="KdF Ship Wilhelm Gustloff">Wilhelm Gustloff</a></i>, overfilled with German <a href="https://en.wikipedia.org/wiki/Refugee" id="mw1A" rel="mw:WikiLink" title="Refugee">refugees</a>, sinks in the <a href="https://en.wikipedia.org/wiki/Baltic_Sea" id="mw1Q" rel="mw:WikiLink" title="Baltic Sea">Baltic Sea</a> after being <a href="https://en.wikipedia.org/wiki/Torpedo" id="mw1g" rel="mw:WikiLink" title="Torpedo">torpedoed</a> by a <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mw1w" rel="mw:WikiLink" title="Soviet Union">Soviet</a> <a href="https://en.wikipedia.org/wiki/Soviet_submarine_S-13" id="mw2A" rel="mw:WikiLink" title="Soviet submarine S-13">submarine</a>, killing approximately 9,500 people.