Engineering:T.991-class patrol boat

Class overview
Builders:	Marson Shipbuilding Mahidol Adulyadej Naval Dockyard
Operators:	Royal Thai Navy
Planned:	3
Completed:	3
General characteristics
Type:	Patrol boat
Displacement:	170 tons, 186 tons (full load) (est)
Length:	38.7m (est)
Beam:	6.49m (est)
Draught:	3.8m (est)
Propulsion:	2 x MTU 16V 4000 R41 R, 2 x diesel generators 140 kW
Speed:	Maximum: 27 knots
Range:	At cruising speed knots: 1,500Nm
Complement:	29
Sensors and processing systems:	Combat System: Navigation: S G Brown Mk 31 Attitude and Heading Reference Systems (AHRS) Fire Control: Thales MIRADOR
Armament:	2 × MSI-DSL 30mm DS-30M , 2 x 12.7mm

The Tor 991 is a class of patrol boats designed and built in Thailand. The design of the patrol boat was initiated by King Bhumibol in 2003. The first vessel, T.991 was launched on April 30, 2007.