Credit
U.S. Marine Corps photo by Lance Cpl. Antonio Garcia · Public domain · Resized · Public domain · Source ↗ · Modified
FORCETALLY
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At a glance
Measured figures
Length
Single source63 m (206 ft 8 in)[source]
Batch 1
Single sourceConfiguration
| Specification | Ambassador MK III missile boat | River-class patrol vessel |
|---|---|---|
| Complement | 36 (8 officers, 10 chief petty officers, and 18 ratings), 38[source] | Batch 1: 28-30 Batch 2: 34-50[source] |
| Name | Ambassador MK III[source] | River class[source] |
| Builders | VT Halter Marine[source] | Batch 1: Vosper Thornycroft Batch 2: BAE Systems Maritime – Naval Ships[source] |
| Operators | Egyptian Navy[source] |
Batch 2
Single sourceBatch 1: 79.5 m (260 ft 10 in) Batch 2: 90.5 m (296 ft 11 in)[source]
4× MTU diesels
Single source4× MTU diesels, 30,000 hp (22 MW)[source]
Batch 1: 2 × Ruston 12R270 diesel engines, 8,250 kW (11,060 hp ), 2 shafts 2 × controllable-pitch propellers Batch 2: 2 × MAN 16V28/33D diesel engines, 14,700 kW (19,700 hp), 2 shafts 2 × controllable-pitch propellers[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
Royal Navy Brazilian Navy Royal Thai Navy Royal Bahrain Naval Force[source] |
| Cost | US$1.290 billion (total program in 2009) US$240m (marginal cost of fourth hull in 2009)[source] | — |
|---|
| Built | 2008–2013[source] | 2001–present[source] |
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| In commission | 2013–[source] | 2003–present[source] |
|---|
| Planned | 14[source] |
|---|
| Active | 8 (Royal Navy) 3 (Brazilian Navy) 2 (Royal Thai Navy) 1 (Royal Bahrain Naval Force)[source] |
|---|
| Type | Missile boat[source] | Offshore patrol vessel[source] |
|---|
| Propulsion | 4 shafts[source] | — |
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| Endurance | 8 days at sea[source] | Batch 1: 21 days Batch 2: 35 days[source] |
|---|
| Sensors & processing systems | Thales MRR-3D NG G band multi-role radar Thales Scout ( I / J band ) Maritime Surveillance Radar Thales STING-EO Mk2 fire control Radar Link ASN 150, LinkYE, Link 14 and Link 11 data links IFF TACTICOS Combat Management System with Model 033-2T/066-2T Tracking Pedestals.[source] | Batch 2: Kelvin Hughes Ltd SharpEye navigation radar Terma Scanter 4100 2D radar BAE CMS-1 Shared Infrastructure operating system[source] |
|---|
| Electronic warfare & decoys | 4 × chaff/IR Decoy launchers ESM / ECM[source] | — |
|---|
| Armament | 8 × RGM-84 Boeing Harpoon SSM Block 1G in 2 quad canister launchers 1 × OTO Melara Mk 75 76 mm/62 Super Rapid DP gun 1 × Mk 31 Mod 3 RIM-116 RAM (21 missiles) 1 × Raytheon Mk 15 Mod 21 Phalanx (Block 1B) 20 mm Phalanx CIWS 2 × deck-mounted 7.62 mm M60 machine guns[source] | Batch 1: 1 × Oerlikon 20 mm cannon 2 × General purpose machine guns Batch 2: 1 × Bushmaster 30 mm cannon 2 × Miniguns (replaced by Browning .50 caliber heavy machine guns as of 2023) 2 × general purpose machine guns[source] |
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| Country of origin | United States[source]Ambassador MK III missile boat · origin explicitly stated in the linked current national-inventory row; no inference from operator or shipyard | United Kingdom[source] |
|---|
| Preceded by | — | Castle class[source] |
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| Subclasses | — | Krabi -class patrol vessel Amazonas -class corvette[source] |
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| Completed | — | 14[source] |
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| Boats & landing craft carried | — | Two Pacific 24 RIBs; Batch 2: Small Unmanned underwater vehicles may be embarked for mine countermeasures[source] |
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| Troops | — | Batch 1: c. 18 Batch 2: up to 50[source] |
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| Aviation facilities | — | Batch 2: Merlin -capable flight deck; small UAVs may be embarked[source] |
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| Notes | — | Batch 1: 25-tonne crane Batch 2: 16-tonne crane[source] |
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