Bay-class patrol boat vs Kaivan-class patrol craft

Bay-class patrol boat — licensed reference photograph

APatrol & mine warfare vessels

Bay-class patrol boat

Patrol boat

Credit

Ken Hodge · CC BY 2.0 · Resized · CC BY 2.0 · Source ↗ · Modified

Kaivan-class patrol craft — licensed reference photograph

BPatrol & mine warfare vessels

Kaivan-class patrol craft

Large patrol craft

Credit

Mehdi Marizad · CC BY 4.0 · Resized · CC BY 4.0 · Source ↗ · Modified

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

Bay-class patrol boatLength

38.2 m

Length source ↗

Kaivan-class patrol craftLength

28.9 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Bay-class patrol boatlarger figure on 4 of 4

Length+32%
Beam+16%
Draught+26%
Speed+10%

Kaivan-class patrol craftlarger figure on 0 of 4

None

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

Measured figures

Head to head

14 of 22 rows sourced on both sides

38.2m

28.9m

Length+32%

All recorded figures & sources

38.2 m

Length

Single source

38.2 m (125 ft 4 in)^[source]

28.9 m

Length

Single source

28.9 m (94 ft 10 in)^[source]

7.2m

6.2m

Beam+16%

All recorded figures & sources

7.2 m

Beam

Single source

7.2 m (23 ft 7 in)^[source]

6.2 m

Beam

Single source

6.2 m (20 ft 4 in)^[source]

2.4m

1.8–2m

Draught

All recorded figures & sources

2.4 m

Draught

Single source

2.4 m (7 ft 10 in)^[source]

1.8–2 m

Draught

Single source

1.8–2 m (5.9–6.6 ft)^[source]

134 tons

150tFull load · Jane’s cited

Displacement

All recorded figures & sources

134 tons^[source]

148 tonnes

Full load · Conway’s cited

Single source

150 tonnes

Full load · Jane’s cited

Single source

85 tonnes

Load unspecified · Combat Fleets cited

Single source

98 tonnes

Standard · Conway’s cited

Single source

100 tonnes

Standard · Jane’s cited

Single source

98/100 tons standard 148/150 tons full load^[source]

100 tonnes (98 long tons )^[source]

150 t (150 long tons) at full load^[source]

98 tonnes (96 long tons )^[source]

148 tonnes (146 long tons )^[source]

85 tonnes (84 long tons )^[source]

12crew

Complement

All recorded figures & sources

12 people

crew

Single source

12 crew^[source]

15 people

Complement

Single source

15^[source]

37km/hMaximum; Speed

28–39km/hMaximum; Speed

Speed

All recorded figures & sources

37 km/h

Maximum; Speed

Single source

20 knots (37 km/h; 23 mph)^[source]

28–39 km/h

Maximum; Speed

Single source

15–21 kn (28–39 km/h)^[source]

1,900kmat 20 knots (37 km/h; 23 mph)

4,304kmat 8 knots (15 km/h)

RangeScopes differ

All recorded figures & sources

1,900 km

at 20 knots (37 km/h; 23 mph)

Single source

1,000 nmi (1,900 km; 1,200 mi) at 20 knots (37 km/h; 23 mph)^[source]

2,800 km

at 15 knots (28 km/h)

Single source

4,304 km

at 8 knots (15 km/h)

Single source

2,324 nmi (4,304 km) at 8 knots (15 km/h) 1,500 nmi (2,800 km) at 15 knots (28 km/h)^[source]

Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.

Configuration

Details

Bay-class patrol boat and Kaivan-class patrol craft configuration
Specification	Bay-class patrol boat	Kaivan-class patrol craft
Power	—	Diesel^[source] 2 or 4 × NYHMS-1200 engines, 2,120 horsepower (1.58 MW) 2 × shafts^[source]
Name	Bay class^[source]	—
Builders	Austal^[source]	USCG, Curtis Bay^[source]
Operators	Australian Border Force Marine Unit Sri Lanka Navy Malaysian Maritime Enforcement Agency^[source]	Islamic Republic of Iran Navy^[source]
In service	1999–present^[source]	1956–present^[source]
Completed	8^[source]	4^[source]
Active	2^[source]	3^[source]
Retired	6^[source]	—
Type	Patrol boat^[source]	Large patrol craft^[source]
Propulsion	2 × MTU 16V 2000 M70 diesel engines 1 VosperThornycroft bow thruster^[source]	—
Boats & landing craft carried	2 × Wiltrading Pursuit 640 vessels (USLC-2C Survey)^[source]	—
Sensors & processing systems	Radar: Surface search: Racal Decca; E/F and I bands Sonar: Wesmar SS 390E dipping sonar^[source]	—
Armament	1 × 7.62 mm general purpose machine gun^[source]	—
Country of origin	Australia^[source]Bay-class patrol boat · origin explicitly stated in the linked current national-inventory row; no inference from operator or shipyard	United States^[source]
Lost	—	1^[source]

FORCETALLY

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Preparing your view.

Bay-class patrol boat

Kaivan-class patrol craft

Power

—

Diesel^[source]

2 or 4 × NYHMS-1200 engines, 2,120 horsepower (1.58 MW) 2 × shafts^[source]

Name

Bay class^[source]

—

Builders

Austal^[source]

USCG, Curtis Bay^[source]

Operators

Australian Border Force Marine Unit Sri Lanka Navy Malaysian Maritime Enforcement Agency^[source]

Islamic Republic of Iran Navy^[source]

In service

1999–present^[source]

1956–present^[source]

Completed

Active

Retired

—

Type

Patrol boat^[source]

Large patrol craft^[source]

Propulsion

2 × MTU 16V 2000 M70 diesel engines 1 VosperThornycroft bow thruster^[source]

—

Boats & landing craft carried

2 × Wiltrading Pursuit 640 vessels (USLC-2C Survey)^[source]

—

Sensors & processing systems

Radar: Surface search: Racal Decca; E/F and I bands Sonar: Wesmar SS 390E dipping sonar^[source]

—

Armament

1 × 7.62 mm general purpose machine gun^[source]

—

Country of origin

Australia^[source]Bay-class patrol boat · origin explicitly stated in the linked current national-inventory row; no inference from operator or shipyard

United States^[source]

Lost

—

1^[source]