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Italian submarine Nereide

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Title: Italian submarine Nereide  
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Italian submarine Nereide

Regia Marina Nereide
Career (Italy)
Name: Nereide
Builder: Venice Navy Yard, Venice[1]
Launched: 12 July 1913[1]
Fate: sunk 5 August 1915 by U-5 (Austria-Hungary)[1]
General characteristics
Class & type:
Displacement: 225 t (248 short tons) surfaced[1]
320 t (350 short tons) submerged
Length: 134 ft 4 in (40.94 m)[1]
Beam: 14 ft 1 in (4.29 m)[1]
Draft: 9 ft 4 in (2.84 m)[1]
Propulsion: 2 × shafts[1]
2 × Sulzer diesel engines, 600 bhp (450 kW) total
2 × Ansaldo electric motors, 320 hp (240 kW) total[1]
Speed: 13.2 knots (24.4 km/h) surfaced[1]
8 knots (15 km/h) submerged
Complement: 2 officers, 17 enlisted[1]
Armament: 2 × 17.7 in (450 mm) bow torpedo tubes; 4 torpedoes[1]

Nereide was a in the Italian Royal Navy (Italian: Règia Marina) during World War I. She was built 1911–1913 at the navy yard at Venice and was sunk in 1915 by the Austro-Hungarian submarine U-5 under the command of Georg Ritter von Trapp. Nereide's captain, Carlo del Greco posthumously received the Medaglia d'Oro al Valore Militare for his actions when Nereide was sunk.

Design and construction

The Italian was designed by Curio Bernardis, later a well-known submarine designer. Nereide's hull, like that of her sister ship Nautilus, was shaped similar to a torpedo boat. She was 134 feet 4 inches (40.94 m) long with a beam of 14 feet 1 inch (4.29 m) and a draft of 9 feet 4 inches (2.84 m). She was outfitted with two shafts powered by twin 300 bhp (220 kW) Sulzer diesel engines for surface running at up to 13.2 knots (24.4 km/h), and twin 160 hp (120 kW) Ansaldo electric motors for a maximum of 8 knots (15 km/h) when submerged. Nereide was armed with two 17.7-inch (450 mm) bow torpedo tubes and could carry up to 4 torpedoes. She was designed for a complement of 19—2 officers and 17 sailors.[1]

Nereide was laid down at the Venice Navy Yard on 1 August 1911, and was launched on 12 July 1913. It is not known when Nereide was commissioned, but it was most likely after her completion on 20 December 1913.[2] Little is known about Nereide's service career in the Règia Marina before August 1915.


After Italy's entry into World War I, the country's armed forces occupied the island of Pelagosa in the central Adriatic.[3] After scouting reports from the German submarine UB-14 and from an Austro-Hungarian reconnaissance aircraft reported a French or Italian submarine—which was, in fact, Nereide—at Pelagosa in early August 1915, the Austro-Hungarian Navy dispatched its submarine U-5, under the command of Georg Ritter von Trapp,[Note 1] from nearby Lissa.[3][4] On the morning of 5 August, Nereide was on the surface, moored under a cliff in the island's harbor.[3]

When U-5 surfaced just offshore, Nereide's commanding officer, Capitano di Corvetta Carlo del Greco, cast off the lines and maneuvered to get a shot at von Trapp's boat. Nereide launched a torpedo at U-5 but missed, after which del Greco ordered his boat down. U-5 lined up a shot and launched a single torpedo at the slowly submerging target, striking her, and sending her to the bottom with all hands.
Italian submarine Nereide
Location of the wreck

Nereide's wreck was located in 1972 at position 42°23′N 16°16′E / 42.383°N 16.267°E / 42.383; 16.267 (Italian submarine Nereide)Coordinates: 42°23′N 16°16′E / 42.383°N 16.267°E / 42.383; 16.267 (Italian submarine Nereide).[2][7]




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