SMS G85[a][b] was a 1913 Type Large Torpedo Boat (Großes Torpedoboot) of the Imperial German Navy (Kaiserliche Marine) during World War I. G85 was built by Germaniawerft at their Kiel shipyard, with the ship being launched on 24 July 1915 and completed in December that year.

She was sunk in the Battle of Dover Strait on 21 April 1917, after being torpedoed by the British Flotilla leader Swift.

[5][6] Three oil-fired water-tube boilers fed steam at 18 standard atmospheres (260 psi) to two sets of Germania direct-drive steam turbines, each of which drove a single propeller shaft with a 2.50 m (8 ft 2 in) diameter, three-bladed propeller fitted.

[8][9] The machinery was rated at 24,000 PS (24,000 shp; 18,000 kW), giving a design speed of 33.5 kn (38.6 mph; 62.0 km/h).

[14] On 25 March 1916, the British seaplane carrier HMS Vindex, escorted by the cruisers and destroyers of the Harwich Force, launched an air attack against a Zeppelin base believed to be at Hoyer on the coast of Schleswig.

[14] S22 struck a mine about 35 nmi (40 mi; 65 km) west of the Borkum Riff Lightship, with the explosion sinking the torpedo boat.

[31][32] At about 23:30 hr on 20 April Gruppe Gautier encountered the trawler Sabreur and attacked with gunfire, scoring two hits.

Gruppe Gautier, now split into two sub-divisions of three ships each, moved off down the Channel to attack the Dover Barrage, but encountered the British Flotilla Leaders Broke and Swift.

The two British ships clashed with the first subdivision, with an exchange of torpedoes and shellfire resulting in a single shell hitting Swift before contact was lost.