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Mk 54 Torpedo

The Mk 54 is a lighweight torpedo, which integrates existing torpedo hardware and software from the Mk 46, Mk 50 and Mk 48 torpedo programs with state-of-the-art commercial-off-the-shelf (COTS) digital signal-processing technology, resulting in a highly cost-effective weapon system. It combines the homing portion of the Mk 50 with the warhead and propulsion sections of the Mk 46, while it uses some software and computer hardware of the Mk 48 ADCAP. The torpedo features an advanced guidance and control (G&C) section and tactical software improvements which significantly increases its shallow water counter-countermeasure capability. It was previously known as the Lightweight Hybrid Torpedo (LHT).
Mk 54 Torpedo Copyright © Mass Communication Specialist 2nd Class Justin Wolpert, U.S. Navy


In active service


Manufacturer: Raytheon Integrated Defense Systems - Tewksbury, Massachusetts, USA


April 2003 - Raytheon awarded a first procurement contract by the U.S. Navy
June 2004 - Second procurement contract awarded to Raytheon
2004 - Initial Operational Capability for the Mk 54 Mod 0
October 2004 - Full-rate production began
2010 - Initial Operational Capability for the VL-ASROC version

Mod 0

The Mk 54 Mod 0 is the original version of the Mk 54 Lightweight Torpedo.


Length: 2.71 meters 8.9 feet
Diameter: 32.4 centimeters 12.75 inches
Weight: 275.8 kilograms 608 pounds
Warhead weight: 43.9 kilograms 96.8 pounds
Speed: approximately 74 kilometers per hour approximately 46 miles per hour
Propulsion: Liquid propellant
Warhead: High explosive

Mod 1

The Mk 54 Mod 1 adds a new sonar array assembly and improved processing capability.