HMS E25 was a British E class submarine

British E class submarine

The British E class submarines started out as improved versions of the British D class submarine. All of the first group and some of the second group were completed before the outbreak of World War I....

 built by William Beardmore and Company

William Beardmore and Company

William Beardmore and Company was a Scottish engineering and shipbuilding conglomerate based in Glasgow and the surrounding Clydeside area. It was active between about 1890 and 1930 and at its peak employed about 40,000 people...

, Dalmuir

Dalmuir

Dalmuir is an area on the western side of Clydebank, in West Dunbartonshire, Scotland.-Location:It is neighboured by the village of Old Kilpatrick, the Mountblow and Parkhall areas of Clydebank, as well as the town centre...

. She was, along with the future , one of a pair of submarines ordered by the Ottoman Navy

Ottoman Navy

The Ottoman Navy was established in the early 14th century. During its long existence it was involved in many conflicts; refer to list of Ottoman sieges and landings and list of Admirals in the Ottoman Empire for a brief chronology.- Pre-Ottoman:...

 on 29 April 1914, but was taken over by the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 and assigned the E25 name. She was laid down in November 1914, launched on 23 August 1915, and was commissioned on 4 October 1915.

HMS E25 was sold on 14 December 1921.