1939年,HMS橡树在Scapa Flow的德国潜艇上沉没

1939年,HMS橡树在Scapa Flow的德国潜艇上沉没,833人的生命丢失了。 这会促使温斯顿丘吉尔命令在东部进入的突厥流中创建混凝土障碍。
原文:1939 The HMS Oak was sunk by a German submarine in the Scapa Flow and 833 lives were lost. This prompted Winston Churchill to order the creation of concrete barriers at the eastern entrance of Scapa Flow.