Ultra Maritime

Ultra Maritime

Braintree, MA, United States

Naval SystemsRadar & SensorsUnmanned SystemsWeapons
1001-5000 employeesSubsystem Manufacturer, Component SupplierSupplies Naval Forces, Air Forces, Defense Industry
Profile last updated: June 6, 2026

About

Ultra Maritime is a defense subsystem manufacturer based in Braintree, United States working in naval systems, radar & sensors, unmanned systems +3 more.

Ultra Maritime is a global undersea warfare and anti-submarine warfare (ASW) company that designs, develops and manufactures maritime defense systems. Its portfolio includes sonobuoys, sonobuoy receivers, towed sonar arrays, hull mounted sonar and transducers, torpedo nose arrays and deployable and unmanned sonar systems such as the Sea Lancer, Sea Tracker, Sea Spear and Sea Striker families. The company supplies U.S., UK, Canadian and Australian navies and allied forces, and states it produces around 250,000 sonobuoys annually. It operates manufacturing and engineering sites across the United States, United Kingdom, Canada and Australia, with approximately 2,000 employees. Ultra Maritime is owned by Advent International, which acquired it in 2022 and took it private. Its work spans air-launched, surface, undersea and unmanned ASW capabilities.

Location

Braintree, United States

Employees

1001-5000

Company type

Private company

Focus areas

anti-submarine warfareundersea warfaresonobuoyssonartorpedo nose arraystowed arrayshull mounted sonarunmanned systems

Languages

EN

Products & capabilities

Defense domains

Naval SystemsRadar & SensorsUnmanned SystemsWeaponsDefense Software & AIMRO & Logistics

Supply-chain role

Subsystem ManufacturerComponent SupplierMRO & Services

What they offer

HardwareComponentsSoftwareEngineering ServicesMaintenance & Repair

Products

Sonobuoys

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Sonobuoy

Sonobuoys for submarine detection, tracking and anti-submarine warfare, including US, UK and Canadian specification variants.

Sonobuoy Receivers

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Sonobuoy receiver

Receivers that receive and command sonobuoys after deployment from maritime patrol aircraft, including software-defined and UAV-ready variants.

Towed Sonar Arrays

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Towed sonar array

Towed arrays providing long-range undersea detection, acoustic data collection and tracking.

Hull Mounted Sonar

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Hull mounted sonar

Digital hull mounted sonar arrays and transducers for continuous underwater detection and tracking on surface combatants and submarines.

Torpedo Nose Arrays

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Torpedo sensor

Acoustic nose arrays for torpedo target discrimination, guidance and tracking across heavyweight, lightweight and very lightweight classes.

Sea Lancer

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Modular towed array

Open, modular family of towed sonar arrays for surface and subsurface, manned and unmanned platforms.

Sea Tracker

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Containerized sonar system

Modular, containerized low SWaP sonar for optionally-manned and unmanned ASW applications, fitted with Sea Lancer towed arrays.

Sea Spear

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Deployable sonar array

Compact UUV/USV-deployable array with extendable packaging and edge processing, providing towed-array-class sensing.

Sea Striker

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Acoustic array

Family of next-generation acoustic arrays for detecting stealthy submarine threats.

End users

Naval ForcesAir ForcesDefense Industry

Standards, platforms & customers

Platforms & programmes

MK 48 MOD 7Hunter Class frigateType 26River Class

Named customers

U.S. NavyUK Ministry of DefenceRoyal Australian NavyRoyal Canadian NavyLockheed Martin Canada

People

Management & team (10)

+ 6 more

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