Mark 54 lightweight torpedo
| Mark 54 lightweight torpedo | |
|---|---|
| Mark 54 torpedo aboard the USS Ross (DDG-71) in March 2008. | |
| Type | Lightweight ASW torpedo | 
| Place of origin | United States | 
| Service history | |
| In service | 2004–present | 
| Used by | United States Navy Royal Australian Navy Royal Canadian Navy Royal Air Force Royal Thai Navy Royal Netherlands Navy Republic of China Navy | 
| Production history | |
| Designer | Raytheon Systems | 
| Designed | 1999 | 
| Unit cost | US$839,320 (FY2014) | 
| Produced | 2003 | 
| Specifications | |
| Mass | 608 lb (276 kg) | 
| Length | 106.9 in (2.72 m) | 
| Diameter | 12.75 in (324 mm) | 
| Warhead | PBXN-103 | 
| Warhead weight | 96.8 lb (43.9 kg) | 
| Blast yield | 238 lb (108 kg) TNT | 
| Engine | Reciprocating external combustion | 
| Propellant | Otto II (liquid) | 
| Operational range | 10,000 yd (9.1 km) | 
| Maximum depth | >450 metres (1,480 ft) (estimate) | 
| Maximum speed | >40 kn (74.1 km/h; 46.0 mph) | 
| Guidance system | Active or passive/active acoustic homing | 
| Launch platform | Mark 32 Surface Vessel Torpedo Tubes, ASW Aircraft, RUM-139 VL-ASROC | 
The Mark 54 lightweight torpedo (formerly known as lightweight hybrid torpedo, or LHT) is a standard 12.75-inch (324 mm) anti-submarine warfare (ASW) torpedo used by the United States Navy and several other nations armed forces.