Description
The MK 54 Lightweight Torpedo, previously known as the Lightweight Hybrid Torpedo (LHT), is a surface ship and aircraft-launched anti-submarine weapon.

The MK 54 MOD 0 Lightweight Torpedo integrates existing torpedo hardware and software from the MK 46 and MK 50 torpedo programs with state-of-the-art commercial-off-the-shelf (COTS) digital signal-processing technology. It incorporates an advanced guidance and control (G&C) section employing COTS processing technologies and tactical software improvements to significantly increase torpedo performance in challenging scenarios at reduced lifecycle costs. Continues software improvements will be delivered through the Torpedo Advanced Processor Build (TAPB) process.  The MK 54 MOD 1 provides a hardware upgrade to the sonar array assembly and associated electronics. The MK 54 MOD 0 Lightweight Torpedo reached Initial Operational Capability (IOC) in 2004. The MK 54 Vertical Launched Anti-Submarine (ASW) Rocket (ASROC) (VLA) system reached IOC in 2010.

 
General Characteristics, MK 54
Primary Function: Lightweight Torpedo
Contractor: Raytheon, Ultra Electronics, Progeny Systems
Propulsion: Liquid propellant
Length: 106.9 inch
Diameter: 12.75 inch
Weight: 607 pounds
Warhead: 100 pounds, high-explosive