There have been a number of 18 inch torpedoes in service with the United Kingdom.
The British E-class submarines started out as improved versions of the British D-class submarine.
Chatham Dockyard was a Royal Navy Dockyard located on the River Medway in Kent.
The Dardanelles (Çanakkale Boğazı, translit), also known from Classical Antiquity as the Hellespont (Ἑλλήσποντος, Hellespontos, literally "Sea of Helle"), is a narrow, natural strait and internationally-significant waterway in northwestern Turkey that forms part of the continental boundary between Europe and Asia, and separates Asian Turkey from European Turkey.
A Fessenden oscillator is an electro-acoustic transducer invented by Reginald Fessenden, with development starting in 1912 at the Submarine Signal Company of Boston.
Malta, officially known as the Republic of Malta (Repubblika ta' Malta), is a Southern European island country consisting of an archipelago in the Mediterranean Sea.
A ship's company comprises all officers, non-commissioned officers and enlisted personnel aboard a naval vessel.
A submarine (or simply sub) is a watercraft capable of independent operation underwater.
A torpedo tube is a cylinder shaped device for launching torpedoes.