When a torpedo locks onto a warship, the crew may have less than a minute to respond. That window is shrinking as adversary nations field weapons with quieter propulsion and smarter guidance systems. Ultra Maritime, a defense electronics firm with deep roots in undersea warfare, is now building two distinct countermeasure systems for the U.S. Navy and Canada’s Royal Canadian Navy, arguing that only a layered defense, combining acoustic decoys with automated detect-and-defeat hardware, can keep pace with the threat.
Two contracts announced in recent months anchor that strategy and position Ultra Maritime as a central supplier of torpedo defense technology to North American fleets.
A new decoy for the U.S. Navy
The U.S. Navy awarded Ultra Maritime a development contract for a next-generation Acoustic Device Countermeasure designated the ADC MK6. The system is a standalone acoustic decoy: once launched from a ship, it generates sound signatures designed to confuse or redirect an incoming torpedo away from the hull.
Ultra Maritime says the MK6 will deliver improved acoustic output and remain compatible with existing fleet launcher hardware, meaning ships could swap in the new decoy without major structural changes. The company frames the effort as a direct answer to torpedoes that can now slip past older decoy technology. However, no specific performance benchmarks, test data, or comparisons to earlier ADC variants have been released. The contract is a development award, placing it early in the acquisition pipeline and well before any production decision.
An integrated defense suite for Canada’s destroyers
Separately, Ultra Maritime secured a CA$89 million contract from Lockheed Martin Canada to supply three shipsets of its Surface Ship Torpedo Defense (SSTD) system for Canada’s River-class destroyer program. Where the ADC MK6 is a single decoy, the SSTD is a full kill-chain package. Ultra Maritime describes it as a “sense to effect” system: it detects an incoming torpedo, classifies the threat, and deploys a countermeasure through a single in-line tow, all with automatic threat detection that removes the need for a human operator to identify the weapon before the ship reacts.
That distinction matters operationally. A warship equipped only with decoys still depends on sonar operators to spot the threat, classify it, and manually launch the right countermeasure. The SSTD compresses that sequence, potentially cutting response time from tens of seconds to something far shorter. Pairing both systems on a single hull would, in theory, give a ship multiple independent chances to defeat a torpedo while providing redundancy if one layer is degraded by cluttered acoustic conditions or equipment failure.
Why the timing matters
The push for better torpedo defense reflects a broader shift in undersea warfare that has accelerated through the mid-2020s. Submarine fleets are expanding in the Indo-Pacific, and several nations are fielding heavyweight torpedoes with wake-homing or fiber-optic guidance that can adapt mid-run. The U.S. Navy’s existing towed countermeasure, the AN/SLQ-25 Nixie, has been in service in various forms since the 1970s. While it has received upgrades, naval analysts have long argued that the system’s fundamental design was not built to handle the speed and sophistication of modern weapons.
Ultra Maritime’s two contracts suggest the Navy and its Canadian counterpart agree the current toolkit needs reinforcement. But the gap between contract award and operational capability remains wide, and neither announcement includes a delivery timeline or a target date for at-sea testing.
Open questions and missing details
Several significant unknowns surround both programs. The ADC MK6 development contract does not specify when the device might enter fleet service, whether in 2028, 2030, or later. The SSTD contract is tied to Canada’s River-class destroyer program, a shipbuilding effort that, like many Canadian defense procurements, carries its own schedule risk. The CA$89 million covers three shipsets, but per-unit costs, spare parts, and lifecycle support figures have not been disclosed.
No independent test data or third-party evaluations of either system are publicly available as of April 2026. All performance claims originate from Ultra Maritime’s own press releases distributed through PR Newswire. The U.S. Navy has not issued a separate statement on the ADC MK6 contract scope, and Canada’s Department of National Defence has not publicly detailed how the SSTD will integrate with the River-class combat management system. Readers should treat the stated capabilities as design goals, not proven battlefield performance.
The SSTD’s automation raises its own set of questions. Ultra Maritime touts automatic threat detection and response but has not specified whether operators can override the system, how false alarms are filtered, or what level of human confirmation is required before a countermeasure fires. Those details carry real weight for safety and rules-of-engagement compliance, particularly when warships operate near civilian traffic or in congested shipping lanes.
What the contracts actually prove
Both key sources are company-issued press releases, primary in the sense that they come directly from the contracting party but promotional by nature. Defense contractor announcements typically spotlight capability and strategic relevance while omitting technical risks and schedule uncertainty. The contracts confirm that Ultra Maritime is the selected vendor and that real money is committed, but they do not independently validate how well either system will perform against a live torpedo.
For the SSTD, the involvement of Lockheed Martin Canada as prime contractor adds a layer of indirect quality assurance. As the integrator for the River-class program, Lockheed Martin has its own incentive to verify the SSTD’s technical readiness before accepting delivery. Still, Lockheed Martin Canada has not issued its own detailed public statement on the subsystem.
The evidence as of late April 2026 supports a narrow but important conclusion: Ultra Maritime has positioned itself as a key supplier of both decoy and integrated torpedo defense systems to two allied navies. The ADC MK6 and SSTD concepts align with widely recognized trends in undersea warfare. Whether they actually close the gap between threat and protection will remain an open question until governments release operational test results or detailed program updates. For now, these contracts mark the starting line, not the finish.
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*This article was researched with the help of AI, with human editors creating the final content.
