Sirio-class patrol vessel

Orione (P 410)
Class overview
Name:	Sirio class
Operators:	Marina Militare
In commission:	2002
Completed:	2
Active:	2
General characteristics
Type:	Patrol vessel
Displacement:	1580 tonnes
Length:	88.6 m (291 ft)
Beam:	12.2 m (40 ft)
Draught:	3.84 m (12.6 ft)
Propulsion:	2 Diesel Wärtsilä-NSD W12-V-26 XN
Speed:	22 knots (41 km/h; 25 mph)
Range:	3,300 nautical miles (6,100 km; 3,800 mi) at 17 knots (31 km/h; 20 mph)
Complement:	70
Armament:	2 OTO Breda-Oerlikon KBA 25/80 guns
Aircraft carried:	1×NH-90

The Sirio class of patrol vessels consists of two units operated by the Italian Marina Militare.

Features

The construction of these units is based largely on that of the Nuove Unità Minori Combattenti (NUMC) with the hull and superstructure built with stealth features. The NUMC and Nuove Unità di Pattugliamento d'Altura (NUPA) share logistics, interoperability, features of the combat system and integrated telecommunications systems.

The engines are two Wärtsilä NSD- W12-26 V-XN diesel engines providing 8,640 kW (11,590 hp) to two propellers with variable-pitch drives that allows a top speed of 22 knots (41 km/h; 25 mph) and a range of 3,300 nautical miles (6,100 km; 3,800 mi) at 14 knots (26 km/h; 16 mph).

Three Isotta Fraschini 1708 T2 M2 600 kW (800 hp) diesel generators each power the on-board electronics.

The armament consists of two Oerlikon KBA-Alenia Oto Melara 25/80 machine guns with the provision to bow mount an OTO Melara 76/62 Super Rapid.

The unit can embark a helicopter, either an AB-212 ASW or NH-90 NFH.

Ships

The two units, built in Muggiano and Riva Trigoso bear the names of two World War II torpedo boats of the Italian Royal Navy after the war served as a spare unit in the Navy.

These units operate in conjunction with NUMC COMSQUAPAT1 of COMFORPAT, the Forces Command patrol for surveillance and Coastal Defence and have their operational base in Augusta. They serve as coastal patrol and traffic control, cargo and surveillance in immigration control.

Sirio (P 409)

Sirio was built in Muggiano, christened 11 May 2002 and delivered on 30 May 2003.

Orione (P 410)

Orione was built in Riva Trigoso, launched on 27 July 2002 and Navy on 1 August 2003.