Description and construction
Vardar was a Sava-class river monitor built for the Austro-Hungarian Navy by Stabilimento Tecnico Triestino, and was laid down as Bosna at Linz in 1914, as part of the Austro-Hungarian 1914–15 Naval Program. She was named after the river Bosna, but was renamed Temes (II) during construction, after the sinking of the original
by a mine on the Sava River on 23 October 1914. Along with her sister ship Sava, she had an overall length of 62 m (203 ft 5 in), a beam of 10.3 m (33 ft 10 in), and a normal draught of 1.3 m (4 ft 3 in). Her displacement was 580 tonnes (570 long tons), and her crew consisted of 91 officers and enlisted men. The ship was powered using steam generated by two Yarrow boilers driving two triple-expansion steam engines, and the ship carried 75 tonnes (74 long tons) of fuel oil. Its engines were rated at 1,750 ihp (1,300 kW) and she was designed to reach a top speed of 13.5 knots (25.0 km/h; 15.5 mph).
Her main armament was a twin gun turret of 120 mm (4.7 in) L/45[a] guns forward of the conning tower and a twin turret of 120 mm (4.7 in) L/10 howitzers aft of the conning tower. She also mounted twin 66 mm (2.6 in) L/26 anti-aircraft guns, two 47 mm (1.9 in) L/44 guns, and seven machine guns. The maximum range of her Škoda 120 mm (4.7 in)L/45 guns was 15 kilometres (9.3 mi), and her howitzers could fire their 20 kg (44 lb) shells a maximum of 6.2 km (3.9 mi). Her armour consisted of belt and bulkheads 40 mm (1.6 in) thick, deck armour 25 mm (0.98 in) thick, and her conning tower, gun turrets and cupolas were 50 mm (2.0 in) thick. Temes (II) was completed on 9 July 1915.