The Serviola-class patrol boats are a series of patrol boats built in 1990 at the shipyard in Ferrol in the former Empresa Nacional Bazan (now NAVANTIA) for the Spanish Navy. They entered service with the Spanish Navy from October 1992.^[1] They are based in the Galician port of Ferrol making most of their patrols along the Galician and Cantabrian coasts.

Spanish Navy patrol ship Centinela
Class overview
Name	Serviola class
Builders	NAVANTIA
Operators	Spanish Navy
Active	4
General characteristics
Type	Patrol boat
Displacement	1200 tons
Length	68 m (223 ft 1 in)
Beam	10.33 m (33 ft 11 in)
Draft	3.36 m (11 ft 0 in)
Propulsion	2 MTU engines, 7,500 hp (5,600 kW), 2 shafts with controllable pitch propellers, 2 stabilizing fins, 3 diesel generators of 195 KW ea
Speed	20 knots (37 km/h; 23 mph)
Sensors and processing systems	Radar and surface / air Consilium RTM Selesmar 30 SIM Consilium Navigation and Radar Selesmar RTM 25 XIM
Armament	2 × 12.7 mm guns 1 × 3"/50 caliber gun

They are designed to remain at sea for long periods of time and withstand rough sea conditions without significant degradation of their capabilities. Each ship is equipped with a flight deck that allows it to operate medium-sized helicopters, a sick bay with six beds, and two rigid inflatable boats.

There are currently four ships in service.

On 3 May 2011 the Spanish patrol boat Atalaya entered waters around Gibraltar and ordered ships to leave the area. She met HMS Scimitar of the Royal Navy and left after about 90 minutes.^[2]