HMS G7 was a British G-class submarine built for the Royal Navy during World War I.

[1] For surface running, the boats were powered by two 800-brake-horsepower (597 kW) Vickers two-stroke diesel engines, each driving one propeller shaft.

[1] Like the rest of her class, G7's role was to patrol an area of the North Sea in search of German U-boats.

One, Svanfos, which still had a boarding party from U-30 aboard, returned to Bergen under her own steam, while the second, the Borgila, had been abandoned by her crew.

G7 put a salvage party aboard Borgila until the Norwegian destroyer Draug arrived to take over.