The D-class diesel-electric submarines were the first British deep water patrol boats taken into the Royal Navy inventory. This addition now provided warplanners with considerable tactical flexibility as the underwater force was no longer confined to coastal areas and could venture much further out in meeting the enemy. Compared to previous Royal Navy boats, the D-class offered up much more in the way of displacement, more powerful diesel engines and were outfitted with wireless sets for sending / receiving communications in-the-field. Eight such boats were laid down from the period of 1907 and 1910 (two more were planned but launched as E-class boats) and named rather appropriately as HMS D1 through HMS D8. Vickers Limited was involved in their construction.
The group superseded the earlier C-class and was itself succeeded by the E-class.
The boats were in active service when World War 1 (1914-1918) broke out in August of 1914. The force was assigned to convoy protection duty in Channel Waters as British ground forces made their way to France by ship for the fighting that lay ahead. There were also general patrols involving these boats in North Sea waters and around the Heligoland Bight (the bay located between Norway and Britain) in an effort to keep German forces contained. Before the cessation of hostilities, the boats were arranged as training platforms at Portsmouth for future submariners.
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.
The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content; site is 100% curated by humans.