British <a href="https://en.wikipedia.org/wiki/R38-class_airship" id="mw6A" rel="mw:WikiLink" title="R38-class airship">airship R-38</a> experiences structural failure over <a href="https://en.wikipedia.org/wiki/Kingston_upon_Hull" id="mw6Q" rel="mw:WikiLink" title="Kingston upon Hull">Hull</a> in England and crashes in the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Humber_Estuary" id="mw6g" rel="mw:WikiLink" title="Humber Estuary">Humber Estuary</a>; of her 49 British and American training crew, only four survive.