North America Sonobuoy Market Size, Share, Growth and Forecast, 2025-2035

Navy restocking and Canada's P-8A shape regional buying

The North America sonobuoy market was valued at USD 289.5 million in 2025 and is projected to increase from USD 305.3 million in 2026 to USD 491.4 million by 2035, registering a CAGR of 5.43% during 2026–2035. Demand comes from the U.S. Navy, which buys expendable acoustic buoys for P-8 and H-60 crews, and from Canada as it moves from the CP-140 Aurora to the P-8A. The United States held the largest country share, 92.7% in 2025, because Navy procurement line 4048 received about $311 million in fiscal 2024 before more than doubling in fiscal 2025. Canada is the faster-growing country at 6.63% a year, since production of its first P-8A began in Wichita on Feb. 18, 2026. Supply is changing as well, because the Navy moved production of multistatic sources to the AN/SSQ-125B and Lockheed Martin agreed in July 2026 to acquire Ultra Maritime.

What does this acoustic buoy market count, and who buys it?

The estimate counts the value of air-launched sonobuoys sold for military use in the United States and Canada, including passive listening buoys, active pinging buoys and special-purpose types such as bathythermographs. Buyers purchase through Naval Air Systems Command delivery orders and Canadian government procurement. Each buoy is expendable, so consumption continues whenever crews train or patrol.

The estimate excludes aircraft, onboard acoustic processors, torpedoes and sonar fitted to ships, and it does not size Mexico separately. The value chain runs from electronics and battery suppliers through final assembly in Florida, Indiana, Virginia and Nova Scotia to Navy and air force stocks.

Passive buoys and fixed-wing patrols anchor value

Why do passive buoys lead product value?

Based on product type, the market is categorized into passive acoustic sonobuoys, active acoustic sonobuoys and special-purpose sonobuoys. Passive acoustic sonobuoys led with 52.0% of 2025 value because a Navy order reported by Military & Aerospace Electronics in October 2016 listed up to 95,000 AN/SSQ-53 buoys among 141,500 units. Active acoustic sonobuoys grow fastest at 6.02% a year as higher-priced types gain weight, with the same publication reporting a Sparton order in January 2025 for up to 20,000 AN/SSQ-125 buoys at $107.1 million, about $5,355 each.

Which missions consume the most buoys?

Based on application, the market is categorized into operational search and tracking, reserve inventory replenishment, aircrew training and development and acceptance testing. Operational search and tracking led with 46.0% of 2025 value because the Navy budget justification ties this line to forward anti-submarine presence by P-8 and H-60 crews. Reserve inventory replenishment grows fastest at 6.18% a year as an October 2022 Navy contract, reported by Defense Daily, names inventory for major combat operations among its purposes, and fiscal 2027 adds a separate out-of-cycle request to replace buoys expended in operations.

How do aircraft types shape buying?

Based on deployment platform, the market is categorized into fixed-wing aircraft, rotary-wing aircraft and unmanned aircraft. Fixed-wing aircraft led with 72.0% of 2025 value because each P-8A can carry a large load, with the Government of Canada listing capacity for 129 A-size sonobuoys on its aircraft. Unmanned aircraft grow fastest at 9.44% a year from a small base, as General Atomics dropped DIFAR, DICASS and bathythermograph buoys from pods on an MQ-9B during tests on Jan. 20-30, 2025, according to its Feb. 25, 2025 release.

Where does competition end and sole-source begin?

Based on sales channel, the market is categorized into United States competitive delivery orders, United States sole-source production awards and Canadian defence procurement. United States competitive delivery orders led with 64.7% of 2025 value because the Navy's 2022 contract, with a $5.1 billion ceiling according to Defense Daily, lets three producers compete for individual orders. Canadian defence procurement grows fastest at 6.63% a year as 14 P-8A aircraft, with options for two more, replace a CP-140 fleet whose life expectancy ends in 2030, according to Public Services and Procurement Canada.

Replenishment, new buoys and Canada lift orders

Recurring readiness replenishment keeps orders flowing

Readiness buying gives this market a steady base because every buoy dropped in training or on patrol has to be replaced. The Navy budget line 4048 on HigherGov shows actual funding between about $297 million and $311 million a year from fiscal 2021 through fiscal 2024, then about $707 million in fiscal 2025 and $700 million enacted for fiscal 2026. That line also pays for acceptance testing and production engineering, and orders are delivered over later years, so appropriations do not become market value dollar for dollar. An October 2022 Navy contract with a $5.1 billion ceiling, reported by Defense Daily, covers annual training, peacetime operations, testing and inventory for major combat operations, with work running through September 2027.

Next-generation acoustic buoys replace older designs

Replacement of older designs lifts value because newer buoys cost more and hunt quieter targets. The Navy moved multistatic source production solely to the AN/SSQ-125B from fiscal 2026, according to its budget justification, and Ultra Maritime won a sole-source low-rate production contract for that buoy, as The Defense Post reported on April 7, 2026. FW-Mag reported the same month that the buoy forms part of the P-8 Increment 3 Block 2 upgrades. The budget text also schedules a new receiver, the AN/SSQ-145, to complement AN/SSQ-101 stocks from fiscal 2029. As a result, Active acoustic sonobuoys grow at 6.02% a year in the Credence Research model.

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Canadian maritime patrol transition opens a new buyer

Canada adds a distinct demand step as it replaces the CP-140 Aurora with the P-8A, a change in the country's maritime patrol aircraft that alters buoy requirements. The Government of Canada project page lists up to 16 aircraft, each able to carry 129 A-size sonobuoys, at 14 Wing Greenwood and 19 Wing Comox. Production of the first aircraft began on Feb. 18, 2026, and the same page estimates first delivery in 2027 and final deliveries in 2027-2028. Canadian Defence Review reported in October 2024 that Ultra Maritime plans to supply these aircraft with significant made-in-Canada content. Canada therefore grows faster than the United States in the Credence Research model through 2035.

Canada's submarine plan and export scale support capacity

Allied programs support regional plants even when the buoys are not bought for North American fleets. Ultra Maritime says up to 20 countries are procuring or expected to procure the SSQ-62G, according to its Oct. 2, 2025 statement, and it reports more than 150 suppliers across 24 U.S. states. Canada's Department of National Defence said in July 2026 that it had begun negotiations with Thyssenkrupp Marine Systems for up to 12 submarines, with the first four due in 2034, which keeps undersea warfare high in planning for Canadian naval vessels. The Navy budget text for fiscal 2025 also cites economies of scale across domestic and foreign military sales funds, so allied volume can spread fixed plant costs.

Competition, drones and consolidation reshape supply

Shift from a joint venture to rival production lines

Competition among separate designs is replacing the old shared supply model. The Navy budget justification says independent Sparton and Ultra Undersea Sensor Systems designs replaced the former ERAPSCO joint venture, while Defense Daily named Lockheed Martin as a third contract holder in October 2022. Ultra Maritime then announced a competitive SSQ-53H delivery order on June 20, 2025, and an SSQ-62G order on Oct. 2, 2025. Fiscal 2027 offers the first competitive opportunity for the DICASS buoy after single-source production through fiscal 2026. Competitive orders therefore held 64.7% of 2025 value in the Credence Research estimate, while the Navy accepts higher qualification and learning costs for a broader supplier base.

Rise of pod-launched buoys on unmanned aircraft

Unmanned launch is moving from concept to tested capability, which widens where buoys can be used. General Atomics tested sonobuoy dispensing pods on an MQ-9B SeaGuardian on Jan. 20-30, 2025, with support from the Naval Air Warfare Center Aircraft Division, according to its Feb. 25, 2025 release. The company tied that work to earlier cooperation at the RIMPAC exercise in July 2024. The test covered DIFAR, DICASS and bathythermograph types, the same families bought by the Navy. Buyers of military drones can therefore treat sonobuoys as a mission load rather than a separate fleet. Unmanned aircraft grow at 9.44% a year in the Credence Research model, although from a small base.

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Opportunity in a Canadian-content supply chain

Canada offers an opening for suppliers that can build to U.S. Navy specifications inside the country. Ultra Maritime invested more than $20 million in its Dartmouth site, according to Canadian Defence Review, which also counted about 350 company employees in Atlantic Canada. A March 2021 company statement carried by EDR Magazine described the firm as Canada's sovereign sonobuoy supplier. High North News reported in December 2023 that the P-8A fleet reaches full operating capability by 2033, so stocking decisions will run for years. Component makers in defense electronics could therefore compete for work on Canadian lines as Canadian defence procurement grows fastest among sales channels in the Credence Research model.

Opportunity in test services after the P-3 retires

Acceptance testing is an opening because the aircraft traditionally used for it are leaving service. The Navy budget justification for fiscal 2027 funds a new contractor-operated air-launch test capability, stating that the P-3 is being retired and suitable aircraft are difficult to schedule. The same document lists acceptance testing and production engineering within a line requesting about $300 million for that year. The Navy also plans a first AN/SSQ-101B competition in fiscal 2027, combining three years of requirements, which adds qualification work for new sources in a market worth USD 305.3 million in 2026. Service providers with instrumented ranges and drop aircraft can therefore bid on recurring work outside the buoy production lines in Florida and Indiana.

Budget swings and split orders test suppliers

Budget swings make capacity planning harder

Funding volatility is the largest planning risk for regional buoy producers. The Navy line moved from about $311 million in fiscal 2024 to about $707 million in fiscal 2025, and the fiscal 2027 request falls to about $300 million before forecasts return above $640 million in fiscal 2028. Plants that add shifts for peak years can face idle capacity in the next one. Producers therefore rely on export orders and multi-year contract ceilings to steady their lines.

Split awards raise the cost of each buoy

Dual sourcing protects supply but costs money, since the Navy budget text states that splitting orders reduces economical ordering quantities and contributes to higher unit costs. The AN/SSQ-53 is one type named in that passage, and unit prices already vary widely, with published ceilings near $5,355 for AN/SSQ-125 buoys in the December 2024 Sparton order. Navy budget offices therefore get fewer buoys for each dollar spent. The Navy accepts this trade to keep at least two qualified producers.

Consolidation narrows the supplier base

Consolidation could reduce the competition the Navy has worked to build. The October 2022 contract named Lockheed Martin, Undersea Sensor Systems and Sparton, while Lockheed Martin's 10-Q for the quarter ended Sept. 27, 2026 confirms a definitive agreement for Ultra Maritime, which owns the second of those lines. That leaves Sparton, owned by Elbit America since April 2021, as the other independent source. Navy buyers may respond by watching pricing closely and maintaining qualified second sources for each type.

Canadian timing leaves a transition risk

Canada faces a tight handover between aircraft fleets, with supply consequences for buoy planners. A Public Services and Procurement Canada note placed the first P-8A delivery as early as 2026, while the current project page estimates 2027, and the CP-140 life expectancy is 2030. Buoy stocks must suit both fleets during that overlap, and overordering older types risks waste. Canadian planners can reduce the risk by timing orders to confirmed aircraft deliveries at Greenwood and Comox.

The United States dominates while Canada grows faster

The United States buys through one Navy line

The United States held 92.7% of 2025 value and grows at 5.33% a year, a pace close to the regional total because it sets that total. Naval Air Systems Command at Patuxent River buys for P-8 and H-60 crews, with plants named in the 2022 contract at Manassas, Virginia, Columbia City, Indiana and De Leon Springs, Florida. Ultra Maritime also reports hundreds of jobs added at Columbia City over two years, which shows how Navy orders shape regional employment.

Canada moves to P-8A aircraft and Atlantic production

Canada held 7.3% of 2025 value and grows faster than the regional average because a new aircraft brings new buoy requirements. The first P-8A entered fuselage assembly in Wichita in February 2026, and bases at Greenwood and Comox will operate the fleet on both coasts. Dartmouth, Nova Scotia, provides domestic production, since Canadian Defence Review reported sonobuoy production areas there. Arctic security and NATO duties, cited by High North News, add patrol demand over a wide ocean area.

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Dated orders and deals from 2025 to 2026

SSQ-125B, SSQ-145 and G-size buoys define the next phase

• AN/SSQ-125B is a coherent source buoy that generates varied waveforms for other buoys to record, and it can change depth or parameters after deployment.
• AN/SSQ-145 is a planned multistatic receiver that the Navy expects to complement AN/SSQ-101 inventories from fiscal 2029.
• G-size buoys are smaller formats offered by Ultra Maritime, which described itself in September 2026 as the only company offering them.
• Pod dispensing allows unmanned aircraft without internal launch tubes to carry buoys, as the January 2025 MQ-9B tests showed.

Two U.S. production bases and one pending merger

Competition centers on qualification, plant capacity and price per delivery order rather than brand. Ultra Maritime reports more than 1,000 sonobuoys a day across the United States, the United Kingdom and Canada, with Columbia City, Indiana, as its modernized U.S. plant. Sparton builds at De Leon Springs, Florida and has held Navy orders for AN/SSQ-125 multistatic buoys since at least March 2024. Lockheed Martin, a third holder of the 2022 Navy contract, agreed to buy Ultra Maritime for $3.45 billion in July 2026, a deal that would place Ultra Maritime inside its Rotary and Mission Systems business once it closes. That business also held AN/SSQ-125A work with sites at Manassas and Clearwater, according to Military & Aerospace Electronics in April 2022. Sparton therefore remains the main independent U.S. line, backed by Elbit America since April 2021. Aircraft makers such as Boeing and General Atomics do not make buoys, but their launch systems and aircraft integration decide which formats buyers can use.

Companies profiled and their roles in this market

Inventory policy matters more than fleet size

Credence Research's view is that inventory policy will matter more than fleet size in the North America sonobuoy market through 2035. Navy budget text now separates training, operational replenishment and stocks for major combat operations, and the jump to about $707 million in fiscal 2025 suggests stocks are the swing factor. The North America sonobuoy forecast to 2035 could prove conservative if funding near $640 million or more holds from fiscal 2028. However, the fiscal 2027 request of about $300 million shows how quickly that funding can reverse, so buyers should plan for uneven orders.

How Credence Research built this acoustic buoy estimate

The report uses 2025 as the base year and 2035 as the forecast year, with market values from the Credence Research model. Country, product, application, platform and channel splits are Credence Research estimates, not reported statistics. Values are modeled estimates of buoy hardware rather than appropriations, so they can sit well below the Navy line in years when funding jumps. Sources consisted of Navy budget text republished by HigherGov, Government of Canada pages, a Lockheed Martin filing and company releases, plus trade publications named in the text. No interviews or surveys were carried out, and classified inventory data were not available.

Navy budgets and Canadian deliveries set the pace to 2035

Through 2035, the North America sonobuoy market reaches USD 491.4 million at a 5.43% CAGR over 2026–2035, with growth depending on how much of the higher Navy funding reaches delivered buoys. The AN/SSQ-125B ramp and the AN/SSQ-145 receiver planned from fiscal 2029 should raise average prices across the product mix. Canada reaches full P-8A capability by 2033 under the timeline reported by High North News, so its orders should settle into a replenishment pattern. The outcome of the Lockheed Martin purchase of Ultra Maritime will decide how much competition remains.

Note: The depth of individual sections depends on data availability for this market. Volume, capacity, trade and other unit-based metrics are included where applicable.