RENDERS BY URBANSLICK

The River class is a class of offshore patrol vessels built primarily for the Royal Navy of the United Kingdom. A total of nine are planned for the Royal Navy; four Batch 1 and five Batch 2. The Batch 1 ships of the class replaced the seven ships of the Island class and the two Castle-class patrol vessels. HTMS Krabi is a variation of the River design built in Thailand for the Royal Thai Navy. The three ships of the Amazonas-class corvette in service with the Brazilian Navy are also a variation of the River design.

Class overview
Name:	River class
Builders:	Batch 1: Vosper Thornycroft[nb 1] Batch 2: BAE Systems Maritime – Naval Ships
Operators:	Royal Navy
Preceded by:	Castle class
Subclasses:	HTMS Krabi Amazonas-class corvette
Built:	2001–2019
In commission:	2003–present
Building:	5
Planned:	9
Completed:	4
Active:	3
Retired:	1
General characteristics
Type:	Offshore patrol vessel
Displacement:	Batch 1: 1,700 t (1,700 long tons; 1,900 short tons)[1][2] Batch 2: 2,000 t (2,000 long tons; 2,200 short tons)[3][4]
Length:	Batch 1: 79.5 m (260 ft 10 in)[2][5] Batch 2: 90.5 m (296 ft 11 in)[1][3][4]
Beam:	Batch 1: 13.5 m (44 ft 3 in)[1][2] Batch 2: 13.5 m (44 ft 3 in)[1][3]
Draught:	Batch 1: 3.8 m (12 ft 6 in)[2]
Propulsion:	Batch 2: 2 × MAN 16V28/33D diesel engines, 14,700kW/10,950HP, 2 shafts 2 × controllable-pitch propellers
Speed:	Batch 1: 20 kn (37 km/h)[1][2][5] Batch 2: 25 kn (46 km/h)[1][3][4]
Range:	Batch 1: 5,500 nmi (10,200 km)[1][5] Batch 2: 5,500 nmi (10,200 km)[1][3][4]
Endurance:	Batch 1: 21 days[1] Batch 2: 35 days[1][3][4]
Boats & landing craft carried:	Two Pacific 24 RIBs[4]
Troops:	Batch 1: 18–20[1][2] Batch 2: 26–50[1][4]
Complement:	Batch 1: 30[2] Batch 2: 58[6]
Sensors and processing systems:	Batch 2: Kelvin Hughes Ltd SharpEye navigation radar[7] Terma Scanter 4100 2D radar[8] BAE CMS-1[4][9] Shared Infrastructure operating system[4]
Armament:	Batch 1:[2] 1 × Oerlikon 20 mm cannon 2 × General purpose machine guns Batch 2:[3][4] 1 × 30 mm cannon 2 × Miniguns 2 × General purpose machine guns
Aviation facilities:	Batch 2: Merlin-capable flight deck[3][4]
Notes:	Batch 2: 16 tonne crane[4]