BPS-500 missile boat vs Knox-class frigate

FORCETALLY

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AWarships

BPS-500 missile boat

Guided-missile corvette

Knox-class frigate — licensed reference photograph

BWarships

Knox-class frigate

Ocean escort (1964–1975) Frigate (1975–1994)

Credit

panza.rayada · CC BY-SA 3.0 · Resized · CC BY-SA 3.0 · Source ↗ · Modified

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

BPS-500 missile boatLength

62 m

Length source ↗

Knox-class frigateLength

134 m

Length source ↗

Lengths retain their source configuration and measurement scope.

BPS-500 missile boatlarger figure on 1 of 3

Speed+18%

Knox-class frigatelarger figure on 2 of 3

Length+116%
Beam+30%

Counts only measures both sources give with the same scope. A larger figure is not a better system.

Measured figures

Head to head

17 of 34 rows sourced on both sides

62m

134m

Length+116%

All recorded figures & sources

62 m

Length

Single source

62 metres (203.4 ft )^[source]

134 m

Length

Single source

Configuration

Details

BPS-500 missile boat and Knox-class frigate configuration
Specification	BPS-500 missile boat	Knox-class frigate
Name	BPS-500 class^[source]	—
Operators	Vietnam People's Navy^[source]	United States Navy Republic of China Navy Egyptian Navy Hellenic Navy Mexican Navy Royal Thai Navy Turkish Naval Forces^[source]
Built	1998–2001, 2025–present^[source]	1965–1974^[source]
In commission	2001–present^[source]	1969–1994 (USN)^[source]

Planned	4^[source]	55^[source]

On order	3^[source]	—

Building	3^[source]	—

Completed	1^[source]	46^[source]

Active	1^[source]	2 (Egypt) 5 (Taiwan)^[source]

Laid up	2^[source]	—

Retired	0^[source]	46 (USN), some were transferred to other countries where they are in active service^[source]

Type	Guided-missile corvette^[source]	Ocean escort (1964–1975) Frigate (1975–1994)^[source]

Tonnage	850 tons (full load)^[source]	—

Sensors & processing systems	MR-352 ("Cross Dome") search radar MR-123 ("Bass Tilt") fire control radar^[source]	AN/SPS-10 Surface Search Radar AN/SPS-40 Air Search Radar AN/SPS-67 Surface Search Radar AN/SQS-26 active/passive Sonar AN/SQS-35 active/passive towed Sonar AN/SQR-18 Towed array sonar system AN/SPG-53 Mk68 Gun Fire Control System^[source]

Armament	1 x AK-176 76 mm gun 1 x AK-630 30 mm CIWS 2 x 12.7 mm machine guns Anti-ship missiles 8 x Kh-35 Uran anti-ship missiles ( Ship 381 ) 8 x VCM-01 anti-ship missiles (from A2 onward) 1 x 9K38 Igla MANPADS^[source]	As built: 1 × 5 in (127 mm)/54 caliber Mark 42 gun 1 × Mk-16 8–cell ASROC launcher 2 × dual Mark 32 Mark 46 torpedo launchers First refit: 1 × Mk-25 8–cell RIM-7 Sea Sparrow (BPDMS) (DE-1052–1069 and 1071–1083) 1 × Mk-29 8–cell RIM-7H Improved Sea Sparrow (IBPDMS) (DE-1070) Mk-16 2 cells converted to launch HARPOON Second refit: 1 × Phalanx CIWS (RIM-7/7H Sea Sparrow removed)^[source]