FORCETALLY
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At a glance
Mark 46 torpedolarger figure on 0 of 4
Spearfish torpedolarger figure on 4 of 4
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
Length
Single source8 ft 6 in (2.59 m )[source]
Length
Single sourceConfiguration
| Specification | Mark 46 torpedo | Spearfish torpedo |
|---|---|---|
| Type | Lightweight anti-submarine torpedo[source] | Heavyweight dual-purpose ASW and ASuW torpedo[source] |
| Place of origin | United States[source] | United Kingdom[source] |
| In service | • Mod 0: 1963 • Mod 5: 1979[source] | 1992–present[source] |
| Used by | See operators[source] | Royal Navy |
7 m (23 ft)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Designer | Naval Ordnance Test Station Pasadena Aerojet Alliant Techsystems[source] | — |
|---|
| Designed | 1960[source] | — |
|---|
| Manufacturer | Aerojet Naval Ordnance Station Forest Park Honeywell Raytheon[source] | BAE Systems Underwater Systems[source] |
|---|
| Variants | Mod 0 Mod 1 Mod 2 Mod 5 Mod 5A Mod 5A(S) Mod 5A(SW)[source] | — |
|---|
| Warhead | PBXN-103 high explosive (bulk charge)[source] | Aluminised PBX explosive[source] |
|---|
| Engine | Two-speed, reciprocating external combustion[source] | Sundstrand gas-turbine with pump-jet[source] |
|---|
| Propellant | Otto fuel II[source] | HAP / Otto fuel II[source] |
|---|
| Maximum depth | >1,200 ft (370 m)[source] | — |
|---|
| Guidance system | Active or passive/active acoustic homing[source] | Wire-guided with autonomous active terminal homing sonar[source] |
|---|
| Launch platform | Mark 32 Surface Vessel Torpedo Tubes , ASW Aircraft, RUM-139 VL-ASROC[source] | submarine[source] |
|---|
| Produced | — | 1988–2003, 2020- present[source] |
|---|
| No. built | — | 550 produced[source] |
|---|
| Detonation mechanism | — | Proximity or contact detonation[source] |
|---|
| Reported operators |
| — |
|---|