FORCETALLY
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At a glance
Japanese icebreaker Shirase (AGB-5003)larger figure on 1 of 1
Rigid Raiderlarger figure on 0 of 1
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
Length
Single source138 m (452 ft 9 in)[source]
Length
Single sourceConfiguration
| Specification | Japanese icebreaker Shirase (AGB-5003) | Rigid Raider |
|---|---|---|
| Displacement | Approx. 20,000 tons[source] | — |
| Name | Shirase (しらせ)[source] | — |
| Namesake | Shirase Glacier[source] | — |
| Laid down | 15 March 2007[source] | — |
| Launched | 16 April 2008[source] | — |
| Commissioned | 20 May 2009 |
6.5 m (21 ft 4 in)[source]
Maximum
Single sourceMaximum; in 1.5 m (4.9 ft) ice
Single source19.5 knots (36.1 km/h; 22.4 mph) (maximum) 3 knots (5.6 km/h; 3.5 mph) in 1.5 m (4.9 ft) ice[source]
In excess of
Single sourceIn excess of 120 nautical miles (220 km)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| — |
| Home port | Yokosuka[source] | — |
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| Identification | Hull number: AGB-5003 MMSI number : 431999533 Callsign : JSNJ[source] | — |
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| Status | Active[source] | — |
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| Preceded by | Shirase class (1981)[source] | — |
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| Succeeded by | N/A[source] | — |
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| Type | Icebreaker[source] | — |
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| Capacity | 80 scientists 1,100 tons of cargo[source] | — |
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| Aircraft carried | 3 helicopters[source] | — |
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| National origin | Japan[source] | — |
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| Troops | — | 10 Royal Marines (2 crew, 8 fully equipped troops)[source] |
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| Role | — | fast raiding and assault craft[source]Exact source equipment subject, not its payload or a supported platform |
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| Country of origin | — | United Kingdom[source]Inventory Origin column; table 2, row 3, cell 2; revision 1373375989; retrieved 2026-09-30 |
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