What GABLER Maschinenbau does

GABLER Maschinenbau is a German defense technology company headquartered in Lübeck that designs and manufactures mission-critical systems for submarines and uncrewed underwater/surface platforms, serving European NATO and allied navies. The company's products fall into four groups: (1) Mast Systems — a fully integrated family of hoistable masts (snorkel, radar, communications, satcomms, ESM, optronic, periscope, HF emergency antennas, and weapon masts) for conventional crewed submarines and XLAUVs, with approximately 900 units cumulatively delivered to navies and shipyards across more than 25 navies and approaching 200 boats; (2) Submarine Components — including the Xhale snorkel air management system for minimal acoustic signature, Pulse shore power and network systems, and low-signature steering and diving actuators; (3) Tactical Gateways — Relay expendable communications buoys, Roam buoyant wired antennas, and the Ranger reusable ISR and Raider single-use strike USVs, both designed for launch from standard 533 mm torpedo tubes; and (4) Subsea Drives — hydraulic and electric drive and control systems for UUVs and submarines, organized as a new division from January 2026.

The company operates a B2G defense procurement model, selling directly to naval procurement offices and defense ministries through framework agreements (notably with BAAINBw for the German Navy, and a trilateral Germany-Italy-Portugal submarine support framework announced December 2025), competitive tenders, and lifecycle support contracts spanning concept, build, in-service, and end-of-life phases. Pricing is non-public, set per program through classified tenders. Revenue comes from hardware sales (mast systems, components, tactical gateways, USVs) and recurring professional and managed services (engineering support, maintenance, spare parts, training, commissioning). Customer-facing segmentation combines geography (European NATO and Asia-Pacific navies) and business unit (submarine shipyards and defense primes).

GABLER was founded in 1962 by Prof. Ulrich Gabler, acquired by the Possehl Group in 2013, and listed on the Frankfurt Stock Exchange on 9 March 2026 as Gabler Group AG. The Gabler Group today comprises GABLER Maschinenbau, Gabler Korea (Busan, established 2024), Develogic (subsea sensing and wireless telemetry), North IO (geospatial data management for defense), SubCtech (marine batteries and sensors, acquired August 2025), and AHE (hydraulic drive technology). The GABLER brand portfolio includes sub-brands Xhale, Pulse, Relay, Roam, Ranger, and Raider. Headcount sits in the 101–250 band, the company is ISO 9001 certified, and it markets through defense industry events (CNE, DWT, DALO), LinkedIn, Instagram, and a corporate newsroom.

Name

GABLER Maschinenbau

Legal name

Gabler Group AG

Website

https://gabler-naval.com

Company type

Public

Founded year

1962

Operating status

Operating

Headcount range

101–250 employees

Short description

GABLER Maschinenbau is a German defense technology company headquartered in Lübeck that designs hoistable mast systems, submarine components, tactical communications buoys, and torpedo-tube launched USVs for European NATO and allied navies worldwide.

Ownership category

akta.pro rank

Product category

Naval Defense Equipment

NAICS

Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511), Ship Building and Repairing (336611), Aerospace Product and Parts Manufacturing (33641)

SIC

Ordnance & Accessories, (No Vehicles/Guided Missiles) (3480), Search, Detection, Navagation, Guidance, Aeronautical Sys (3812), Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Submarine Systems & Components (Pressure Hull, Ballast, Life Support) (IMABAKAL)

akta.pro secondary industries

Submarine Weapons Launch & Handling Systems Manufacturing (Tubes, VLS, Racks) (IMAJAOAI), Submarine Life Support & Environmental Control Systems Manufacturing (IMAJAOAK), Submarine Outfitting, Habitability & Auxiliary Systems Manufacturing (IMAJAOAM), Submarine Combat Systems & Sonar Manufacturing (CMS, Sensors, EW) (IMAJAOAH)

Keywords

• Submarine mast systems
• Naval defense equipment
• Submarine components
• Tactical communications buoys
• Uncrewed surface vessels

Headquarters

HQ city

Lübeck

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales

Revenue model

1. Defense Hardware Sales: Sale of submarine mast systems, vessel components, tactical gateways, and USVs to naval defense customers. Products are custom-configured for specific submarine platforms with long procurement cycles and lifecycle support requirements.
2. Lifecycle Support and Maintenance Services: Comprehensive lifecycle management services covering entire lifespan of crewed and uncrewed vessel fleets including engineering support, maintenance, repairs, spare parts, training, and commissioning services from concept phase through end-of-life.
3. Framework Agreements and Support Contracts: Long-term framework agreements with navies and defense ministries for in-service support, spare parts supply, and maintenance services across fleet operations. Contracts with BAAINBw, Italian Navy, and Portuguese Navy.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

GABLER Maschinenbau designs, develops, and manufactures submarine mast systems, submarine subsystems (control units, actuators, valves, steering/diving systems), tactical gateways (communications buoys and uncrewed surface vessels), and subsea drives. It supplies this hardware together with lifecycle support services to NATO and allied navies and their submarine builders.

Product overview

GABLER Maschinenbau is a German defence technology company providing a portfolio of submarine and uncrewed platform solutions. The core offerings include: (1) Mast Systems — hoistable periscope, radar, communications, ESM, optronic and weapon masts for conventional submarines and XLAUVs; (2) Submarine Components — including Xhale snorkel air management, Pulse shore power systems, and steering/diving actuators; (3) Tactical Gateways — Relay expendable buoys, Roam buoyant wired antennas, and Ranger/Raider torpedo-tube launched USVs for ISR and strike missions; and (4) Subsea Drives — hydraulic and electric propulsion and control systems for UUVs and submarines. All products are backed by lifecycle technical services and training programmes.

Differentiator

Problem solved

Functional benefit

Brands

• Relay: One-time expendable communications buoy for rapid secure signalling
• Roam
• Ranger
• Raider
• Xhale
• Pulse

Products and services

• Mast Systems Hoistable mast systems for submarines, designed to operate with low acoustic and radar signatures. Sold to navies and submarine builders for integration into new-build and in-service submarine platforms.
• Submarine Components Submarine subsystems and components, including control units, actuators, valves, and steering/diving systems supplied to submarine programmes.
• Tactical Gateways Tactical communications gateways comprising buoy systems (Relay, Roam) and uncrewed surface vessels (Ranger, Raider) that extend naval communications and deploy sensors from the submarine and surface fleet.
• Subsea Drives Subsea propulsion and drive systems used on uncrewed underwater vehicles and submarine platforms.

Quantifiable outcome

• 60+ years of experience with over 25 navies and approaching 200 boats equipped
• +1 more outcomes

Named customers3 records

Segments2 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Five partnerships are on record, tiered core and flagship.

• FLANQcoreStrategic or Co-development Partner · 20 August 2025Strategic partnership to co-develop and manufacture torpedo-tube launched uncrewed surface vehicles (USVs). GABLER leads system integration, commercialisation, and global delivery to navies. FLANQ handles design, manufacturing, and payload integration. Partnership delivers Ranger ISR USV and Raider strike USV for European and NATO naval forces. Both reusable and single-use variants developed.
• SubCtechcoreTechnology or Integration · 1 August 2025Newest member of Gabler Group (joined August 2025). SubCtech has pioneered marine surface and subsea high integrity batteries for 30 years, powering instruments and vehicles. Also manufactures in-situ sensors for measuring parameters at any water depth.
• DevelogicflagshipTechnology or IntegrationPart of the Gabler Group, Develogic specializes in subsea sensing, data logging, and wireless telemetry systems capable of operating in shallow water and full ocean depth. Empowers navies, scientists, and operators with data securely delivered from the seafloor to the desk.
• North IOflagshipTechnology or IntegrationSister company within Gabler Group, North IO provides geospatial data management solutions for defense customers including maritime surveillance, critical infrastructure protection, and threat detection.
• AHE GmbH (Alexander Homrich Engineering)coreTechnology or IntegrationStrategic collaboration since July 2025. AHE specialists in hydraulics and drive technology including high-pressure cylinders, motors, and actuators for maritime defense applications. Collaboration led to establishment of GABLER's Subsea Drives division. Alexander Homrich joined GABLER management team as Director BU Subsea Drives.

Scale indicators5 records

Recent moves9 records

Expansion highlights7 records

Broad incumbents

• ThyssenKrupp Marine Systems (tkMS): German submarine OEM building Type 212A/212CD and HDW-class boats for the German Navy and export customers. Comparable because GABLER is a tier-1 supplier of masts and components integrated into tkMS platforms, and the two compete at the platform level for the same procurement budgets.
• Atlas Elektronik: German naval sensor and combat systems supplier (sonars, combat management, unmanned underwater systems) serving NATO and allied navies. Directly comparable to GABLER's submarine domain awareness portfolio, though broader in scope and owned by a defense prime (ThyssenKrupp/Leonardo/Hensoldt consortium).
• Hensoldt: German-listed defense electronics company providing naval sensors, radar, EW and optronics. Overlaps with GABLER's ESM, radar and optronic mast families, though Hensoldt operates at much larger scale across air, land and sea.
• Saab Kockums: Swedish submarine OEM (Gotland-class, A26, Collins-class life-extension) whose platforms use hoistable mast technology. Comparable as both a buyer and potential competitor in the submarine mast and component category for European NATO and APAC customers.
• Naval Group: French state-owned submarine designer/builder (Barracuda, Suffren, Scorpène). Comparable because GABLER's mast and component portfolio is integrated into European submarine programs that Naval Group also competes for; also a long-term competitor for mast supply on export submarines.
• L3Harris Technologies: U.S. defense prime with submarine communications, buoy, sonar and unmanned maritime systems portfolios. Comparable to GABLER's tactical gateways (Relay, Roam) and ISR USV product lines for allied-navy procurement outside Europe.
• Leonardo (Electronics / Naval): Italian defense prime providing naval combat systems, sensors and underwater electronics to the Italian Navy (GABLER's U212A customer). Comparable as a fellow supplier into Italian naval programs and a potential co-developer for tactical gateways and communications buoys.

Emerging players

• Subsea7 / Saab Seaeye: Subsea electric/hydraulic drive and control systems for ROVs and UUVs. Comparable to GABLER's new Subsea Drives division (formed Jan 2026 via the AHE partnership) targeting both defense and commercial subsea markets.
• Anduril Industries: U.S. defense technology company building unmanned surface and underwater vehicles (e.g., Dive-LD, Copperhead) for maritime ISR and strike. Comparable to GABLER's Ranger/Raider torpedo-tube launched USVs in the emerging undersea-unmanned category, with stronger software/AI capabilities but less submarine-platform incumbency.
• DSIT Solutions: Israeli supplier of submarine sonar, underwater detection and combat systems to navies worldwide. Comparable to GABLER's submarine sensor and ESM mast offerings, though DSIT is more sonar-centric and serves overlapping export-navy customers.

Market position

Strengths1 record

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights1 record

Customer concentration

• LinkedInlinkedin.com/company/gabler-maschinenbau-gmbh
• Instagraminstagram.com/gabler.career

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments3 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GABLER Maschinenbau