A class torpedo boat

SMS A 68
Class overview
Operators:	Kaiserliche Marine
Built:	1914–1918
In service:	1914–1950
Planned:	113
Completed:	92
Cancelled:	21
Lost:	30

General characteristics (A1–A25)
Displacement:	109 t (107 long tons)
Length:	41 m (134 ft 6 in) LWL
Beam:	4.6 m (15 ft 1 in)
Draught:	1.52 m (5 ft 0 in)
Installed power:	Coal-fired, single-shaft, triple-expansion steam engine, 1,200 ihp (895 kW)
Propulsion:	1 shaft 1 × 1.8 m (5 ft 11 in) propeller
Speed:	20 knots (37 km/h; 23 mph)
Range:	900 nautical miles (1,700 km; 1,000 mi) at 12.5 knots (23.2 km/h; 14.4 mph)
Complement:	28
Armament:	1 × 5 cm (2.0 in) SK L/40 or 5.2 cm (2 in) SK L/55 deck gun 2 × 45 cm (18 in) torpedo tubes 4 × mines

General characteristics (A26–A55)
Displacement:	227–229 t (223–225 long tons)
Length:	49 m (160 ft 9 in) LWL
Beam:	5.32–5.62 m (17 ft 5 in–18 ft 5 in)
Draught:	2.34 m (7 ft 8 in)
Installed power:	Oil-fired, single-shaft, geared turbine steam engine, 3,250 hp (2,424 kW)
Propulsion:	1 × shafts 1 × 1.88 m (6 ft 2 in)
Speed:	25 knots (46 km/h; 29 mph)
Range:	690 nautical miles (1,280 km; 790 mi) at 20 knots (37 km/h; 23 mph)
Complement:	29
Armament:	2 × 8.8 cm (3.5 in) guns 1 × 45 cm (18 in) torpedo tube Minelaying capability

General characteristics (A56–A79)
Displacement:	330–335 t (325–330 long tons)
Length:	59.3–60.12 m (194 ft 7 in–197 ft 3 in) LWL
Beam:	6.42 m (21 ft 1 in)
Draught:	2.21–2.34 m (7 ft 3 in–7 ft 8 in)
Installed power:	Oil-fired, geared turbine steam engine, 6,000 shp (4,474 kW)
Propulsion:	2 × shafts 2 × 1.7 m (5 ft 7 in) propeller
Speed:	28 knots (52 km/h; 32 mph)
Range:	800 nautical miles (1,500 km; 920 mi) at 20 knots (37 km/h; 23 mph)
Complement:	50
Armament:	2 × 8.8 cm (3.5 in) guns 1 × 45 cm (18 in) torpedo tube

General characteristics (A80–A91)
Displacement:	330 t (325 long tons)
Length:	60.2 m (197 ft 6 in) LWL
Beam:	6.41 m (21 ft 0 in)
Draught:	2.11 m (6 ft 11 in)
Installed power:	Oil-fired, geared turbine steam engine, 5,700 shp (4,250 kW)
Propulsion:	2 × shafts 2 × 1.6 m (5 ft 3 in)
Speed:	26 knots (48 km/h; 30 mph)
Range:	800 nautical miles (1,500 km; 920 mi) at 20 knots (37 km/h; 23 mph)
Complement:	50
Armament:	2 × 8.8 cm (3.5 in) guns 1 × 45 cm (18 in) torpedo tube

General characteristics (A92–A113)
Displacement:	330–335 t (325–330 long tons)
Length:	59.4–60.2 m (194 ft 11 in–197 ft 6 in) LWL
Beam:	6.42 m (21 ft 1 in)
Draught:	2.12 m (6 ft 11 in)
Installed power:	Oil-fired, geared turbine steam engine, 5,700–6,000 shp (4,250–4,474 kW)
Propulsion:	2 × shafts 2 × 1.6 m (5 ft 3 in) propellers
Speed:	26.5 knots (49.1 km/h; 30.5 mph)
Range:	800 nautical miles (1,500 km; 920 mi) at 20 knots (37 km/h; 23 mph)
Complement:	50
Armament:	2 × 8.8 cm (3.5 in) guns 1 × 45 cm (18 in) torpedo tube

The A-class torpedo boats were a class of German single-funnelled torpedo boat/light destroyer designed by the Reichsmarineamt for operations off the coast of occupied Flanders in the First World War. The A designation was to avoid confusion with older classes and designs. They were known as "coastal torpedo boats" (German: Küstentorpedoboote) to differentiate from larger, ocean-going torpedo boats.

Six groups of vessels were built under the class between 1914 and 1918, increasing in displacement from 109 tons to 335 tons. All had a raised forecastle, shallow draught, and carried one (for most) or two (for A1-A25) 45 cm (18 in) torpedo tubes amidships.

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