HMS G5
HMS "G5" was a British G-class submarine built for the Royal Navy during World War I. Description. The G-class submarines were designed by the Admiralty in response to a rumour that the Germans were building double-hulled submarines for overseas duties. The submarines had a length of overall, a beam of and a mean draft of . They displaced on the surface and submerged. The G-class submarines had a crew of 30 officers and ratings. They had a partial double hull. For surface running, the boats were powered by two Vickers two-stroke diesel engines, each  driving one propeller shaft. When submerged each propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, the G class had a range of at . The boats were intended to be armed with one 21-inch (53.3 cm) torpedo tube in the bow and two 18-inch (45 cm) torpedo tubes on the beam. This was revised, however, while they were under construction, the 21-inch tube was moved to the stern and two additional 18-inch tubes were added in the bow. They carried two 21-inch and eight 18-inch  torpedoes. The G-class submarines were also armed with a single deck gun. Career. Like the rest of her class, "G5"s role was to patrol an area of the North Sea in search of German U-boats. She survived the war, and was sold for scrap in 1922.