250t-class torpedo boat

250t-class
torpedo boat

One of the T-group boats of the 250t class, 81 T
Class overview
Builders:	T-group Stabilimento Tecnico Triestino F-group Ganz & Danubius M-group Cantiere Navale Triestino
Operators:	Austro-Hungarian Navy Navy of the Kingdom of Serbs, Croats and Slovenes Romanian Naval Forces  Portuguese Navy  Hellenic Navy  Royal Yugoslav Navy  Regia Marina  Kriegsmarine  Navy of the Independent State of Croatia  Soviet Navy  Yugoslav Navy
Preceded by:	110t-class torpedo boat
Built:	1913–16
In commission:	1914–63
Completed:	27
Lost:	15
Scrapped:	12
General characteristics
Type:	Sea-going torpedo boat
Displacement:	262–270 t (258–266 long tons) 320–330 t (315–325 long tons) (full load)
Length:	58.2–60.5 m (190 ft 11 in–198 ft 6 in)
Beam:	5.6–5.8 m (18 ft 4 in–19 ft 0 in)
Draught:	1.5 m (4 ft 11 in) (all groups)
Installed power:	2 × Yarrow boilers 5,000–6,000 shp (3,700–4,500 kW)
Propulsion:	2 × shafts 2 × steam turbines
Speed:	28–28.5 knots (51.9–52.8 km/h; 32.2–32.8 mph)
Endurance:	T-group 980 nmi (1,810 km; 1,130 mi) at 16 knots (30 km/h; 18 mph) F-group and M-group 1,200 nmi (2,200 km; 1,400 mi) at 16 knots (30 km/h; 18 mph)
Complement:	38–39
Armament:	2 × Škoda 66 mm (2.6 in) L/30 guns 4 × 450 mm (17.7 in) torpedo tubes 10–12 naval mines

The 250t class were high-seas torpedo boats built for the Austro-Hungarian Navy between 1913 and 1916. A total of 27 boats were built by three shipbuilding companies, with the letter after the boat number indicating the manufacturer. There were small variations between manufacturers, mainly in the steam turbines used, and whether they had one or two funnels. The eight boats of the T-group, designated 74 T – 81 T, were built by Stabilimento Tecnico Triestino, located at Trieste. The sixteen boats of the F-group, 82 F – 97 F, were built by Ganz & Danubius at their shipyards at Fiume and Porto Re. The three M-group boats, 98 M – 100 M, were manufactured by Cantiere Navale Triestino at Monfalcone.

All 27 boats saw service in World War I, performing anti-submarine operations in the Adriatic Sea, shore bombardment missions along its Italian coastline, and convoy, and escort and minesweeping tasks. Although widely used during the war, the class suffered no losses, despite taking hits during surface engagements and damage from accidents. In 1917, one of the 66 mm (2.6 in) guns on each boat was placed on an anti-aircraft mount. Under the terms of the post-war Treaty of Saint-Germain-en-Laye, the boats were transferred to various countries, including seven to Romania, six to Portugal, six to Greece, and eight to the newly created Kingdom of Serbs, Croats and Slovenes (later Yugoslavia). By 1940, thirteen boats of the class had been lost or scrapped, including all six Portuguese boats.