Monday 19th November 2018

Navy Pursues New Long-Range, Stealthy And Precise Mk 48 Heavyweight Attack Torpedo

- June 26, 2018

Navy weapons developers are seeking a high-tech, longer range and more lethal submarine-launched heavyweight Mk 48 that can better destroy enemy ships, submarines and small boats, service officials said.

The service has issued a new solicitation to industry, asking for proposals and information related to pursuing new and upgraded Mk 48 torpedo control systems, guidance, sonar and navigational technology.

“The Mk 48 ADCAP (advanced capability) torpedo is a heavyweight acoustic-homing torpedo with sophisticated sonar, all-digital guidance and control systems, digital fusing systems and propulsion improvements,” William Couch, Naval Sea Systems Command spokesman, told Warrior Maven.

Naturally, having a functional and more high-tech lethal torpedo affords the Navy an opportunity to hit enemies more effectively and at further standoff ranges and therefore better compete with more fully emerging undersea rivals such as Russia and China.

The Mk 48 heavyweight torpedo is used by all classes of U.S. Navy submarines as their anti-submarine warfare and anti-surface warfare weapon, including the Virginia class and the future Columbia class, Couch added.

For several years now, the Navy has been strengthening its developmental emphasis upon the Mk 48 as a way to address its aging arsenal. The service restarted production of the Mk 48 torpedo mod 7 in 2016.

An earlier version, the Mk 48 Mod 6, has been operational since 1997 – and the more recent Mod 7 has been in service since 2006.

Lockheed Martin has been working on upgrades to the Mk 48 torpedo Mod 6 and Mod 7 – which consist of adjustments to the guidance control box, broadband sonar acoustic receiver and amplifier components.

“The latest version of the Mk 48 ADCAP (advanced capability) is the mod 7 Common Broadband Advanced Sonar System. The Mk 48 ADCAP mod 7 CBASS torpedo is the result of a Joint Development Program with the Royal Australian Navy and achieved initial operational capability in 2006,” Couch said.

The new technology also involves adjustments to the electronic circuitry in order to make the acoustic signals that are received from the system that allow the torpedo to better operate in its undersea environment.

Modifications to the weapon have improved the acoustic receiver, replaced the guidance-and-control hardware with updated technology, increased memory, and improved processor throughput to handle the expanded software demands required to improve torpedo performance against evolving threats, according to Navy data on the weapon.

A Military Analysis Network report from the Federation of American Scientists further specifies that the torpedo uses a conventional, high-explosive warhead.

“The MK 48 is propelled by a piston engine with twin, contra-rotating propellers in a pump jet or shrouded configuration. The engine uses a liquid monopropellant fuel,” the FAS analysis states.

Earlier this year, Lockheed Martin Sippican was awarded a new deal to work on guidance and control technology on front end of the torpedo, and SAIC was awarded the contract for the afterbody and propulsion section, Couch explained.

The Mk 48, which is a heavy weapon launched under the surface, is quite different than surface launched, lightweight Mk 54 torpedoes fired from helicopters, aircraft and surface ships.

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