Mashū-class replenishment ship vs Offshore Raiding Craft

Mashū-class replenishment ship — licensed reference photograph

ANaval support & landing craft

Mashū-class replenishment ship

Fast combat support ship

Credit

Christopher L. Clark, U.S. Navy · Public domain · Resized · Public domain · Source ↗ · Modified

BNaval support & landing craft

Offshore Raiding Craft

small, fast boat used by the Royal Marines for troop insertion, and patrols

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

Mashū-class replenishment shipLength

221 m

Length source ↗

Offshore Raiding CraftLength

9.1 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Mashū-class replenishment shiplarger figure on 2 of 2

Length+2329%
Beam+831%

Offshore Raiding Craftlarger figure on 0 of 2

None

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

Measured figures

Head to head

13 of 23 rows sourced on both sides

221m

9.1m

Length+2329%

All recorded figures & sources

221 m

Length

Single source

221 m (725 ft)^[source]

9.1 m

Length

Single source

9.1m^[source]

27m

2.9m

Beam+831%

All recorded figures & sources

27 m

Beam

Single source

27.0 m (88.6 ft)^[source]

2.9 m

Beam

Single source

2.9m^[source]

690mmLoaded

Draught

All recorded figures & sources

8 m

Draught

Single source

8.0 m (26.2 ft)^[source]

0.56 m

Light

Single source

0.69 m

Loaded

Single source

Light 0.56 m, Loaded 0.69 m^[source]

25,000tfull load

Displacement

All recorded figures & sources

25,000 tonnes

full load

Single source

13,500 tonnes

standard

Single source

13,500 tonnes standard 25,000 tonnes full load^[source]

6 tonnes

Displacement

Single source

4.76 tonnes

Light Load inc fuel & 2 crew & armour, Full load

Single source

Light Load 4760 kg inc fuel & 2 crew & armour, Full load 6000 kg^[source]

150

Complement

All recorded figures & sources

150 people

Complement

Single source

150^[source]

12 people

Royal Marines (1 driver, 3 gunners, 8 fully equipped troops)

Single source

12 Royal Marines (1 driver, 3 gunners, 8 fully equipped troops)^[source]

44km/hMaximum; Speed

74km/hMaximum; " (CRC)

SpeedScopes differ

All recorded figures & sources

44 km/h

Maximum; Speed

Single source

24 knots (44 km/h; 28 mph)^[source]

74.08 km/h

Maximum; " (CRC)

Single source

72.228 km/h

Maximum; Light load Full load

Single source

59.264 km/h

Maximum; (ORC); "up to

Single source

Light load 39 knots, Full load 32 knots (ORC); "up to 40 knots" (CRC)^[source]

17,594kmat 20 knots (37 km/h; 23 mph)

> 370kmIn excess of ORC and CRC

RangeScopes differ

All recorded figures & sources

17,594 km

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

Single source

9,500 nmi (17,594 km; 10,932 mi) at 20 knots (37 km/h; 23 mph)^[source]

> 370 km

In excess of ORC and CRC

Single source

In excess of 200 nautical miles (370 km) (ORC and CRC)^[source]

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

Configuration

Details

Mashū-class replenishment ship and Offshore Raiding Craft configuration
Specification	Mashū-class replenishment ship	Offshore Raiding Craft
Power	2 × Kawasaki Rolls-Royce Spey SM1C gas turbines 40,000 shp (29,828 kW) each 2 × shafts^[source]	Twin Steyr M0256K43 high speed diesel engines each developing 250Hp/184Kw at 4300rpm.^[source]
Builders	Hitachi Shipbuilding Corporation , Maizuru Ishikawajima-Harima Heavy Industries , Tokyo^[source]	Holyhead Marine Services^[source]
Operators	Japan Maritime Self-Defense Force^[source]	—
Preceded by	Towada class^[source]	—
Planned	2^[source]	—
Completed	2^[source]	—
Active	2^[source]	Several dozen CRC/ORC as of 2024 (troop-carrying and fire-support variants)^[source]
Type	Fast combat support ship^[source]	Fast Assault Craft^[source]
Sensors & processing systems	OPS-28 Surface Search RDF OPS-20 Navigation RDF^[source]	—
Electronic warfare & decoys	NOLR-8 RDF Interceptor Mk.137 decoy launchers^[source]	—
Armament	2 × Phalanx CIWS^[source]	Fwd; single or twin GPMG. Aft 2 off; .50 cal, GPMG or 40mm grenade launchers , Gau mini gun^[source]
Aircraft carried	1 × helicopter^[source]	—
Aviation facilities	Helicopter deck and enclosed hangar^[source]	—
Country of origin	Japan^[source]	United Kingdom^[source]Inventory Origin column; table 2, row 4, cell 2; revision 1373375989; retrieved 2026-09-30
Armour	—	Dynema ballistic protection to defeat 7.62mm x 39 Ball at 20m. (optional)^[source]
Role	—	small, fast boat used by the Royal Marines for troop insertion, and patrols^[source]Exact source equipment subject, not its payload or a supported platform

FORCETALLY

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Mashū-class replenishment ship

Offshore Raiding Craft

Power

2 × Kawasaki Rolls-Royce Spey SM1C gas turbines 40,000 shp (29,828 kW) each 2 × shafts^[source]

Twin Steyr M0256K43 high speed diesel engines each developing 250Hp/184Kw at 4300rpm.^[source]

Builders

Hitachi Shipbuilding Corporation , Maizuru Ishikawajima-Harima Heavy Industries , Tokyo^[source]

Holyhead Marine Services^[source]

Operators

Japan Maritime Self-Defense Force^[source]

—

Preceded by

Towada class^[source]

—

Planned

2^[source]

—

Completed

2^[source]

—

Active

2^[source]

Several dozen CRC/ORC as of 2024 (troop-carrying and fire-support variants)^[source]

Type

Fast combat support ship^[source]

Fast Assault Craft^[source]

Sensors & processing systems

OPS-28 Surface Search RDF OPS-20 Navigation RDF^[source]

—

Electronic warfare & decoys

NOLR-8 RDF Interceptor Mk.137 decoy launchers^[source]

—

Armament

2 × Phalanx CIWS^[source]

Fwd; single or twin GPMG. Aft 2 off; .50 cal, GPMG or 40mm grenade launchers , Gau mini gun^[source]

Aircraft carried

1 × helicopter^[source]

—

Aviation facilities

Helicopter deck and enclosed hangar^[source]

—

Country of origin

Japan^[source]

United Kingdom^[source]Inventory Origin column; table 2, row 4, cell 2; revision 1373375989; retrieved 2026-09-30

Armour

—

Dynema ballistic protection to defeat 7.62mm x 39 Ball at 20m. (optional)^[source]

Role

—

small, fast boat used by the Royal Marines for troop insertion, and patrols^[source]Exact source equipment subject, not its payload or a supported platform