https://padlet.com/23tinam2/rqhboj0v8m09 Made with charm en-us 2018-08-27 03:20:55 UTC 2025-10-18 15:02:56 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Clouds.png 23tinam2 https://padlet.com/23tinam2/rqhboj0v8m09/wish/275433993 Submarines were most extensively used by Germany, and was used initially against warships and more heavily against merchant shipping as the war progressed. ]]> 2018-08-27 03:37:30 UTC https://padlet.com/23tinam2/rqhboj0v8m09/wish/275433993 23tinam2 https://padlet.com/23tinam2/rqhboj0v8m09/wish/275436132 The Germans only developed 28 submarines when the war broke out in 1914. ]]> 2018-08-27 03:50:55 UTC https://padlet.com/23tinam2/rqhboj0v8m09/wish/275436132 23tinam2 https://padlet.com/23tinam2/rqhboj0v8m09/wish/276079464 Early submarines were small and generally limited in operational capability. By 1900 they had developed into a standard tubular or cigar shape of single or double hull to minimize water pressure when submerged. By the First World War submarines were larger and more effective than their ancestors of only a few years before but were still relatively small at 100–750 tons. They were fitted with an electric engine for submerged travel and a gasoline engine for surface cruising. The gasoline engine gradually gave way to a more reliable and less dangerous diesel engine that did not give off dangerous fumes. Some French and the large British K-class submarines utilized steam power. ]]> 2018-08-29 00:34:50 UTC https://padlet.com/23tinam2/rqhboj0v8m09/wish/276079464