GISMA Steckverbinder
GISMA Steckverbinder GmbH, founded 1983 in Neumünster, Germany, is an independent, owner-managed manufacturer of underwater electrical, fibre optic, and hybrid connectors (15,000+ variants across 16 series) serving naval, offshore oil and gas, renewable energy, marine research, and aquaculture customers as one of three global market leaders in the segment.
- Company typePrivate
- Founded1983
- HeadquartersNeumünster, Germany
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What GISMA Steckverbinder does
GISMA Steckverbinder GmbH is a German, independent, owner-managed specialty manufacturer founded in 1983 and headquartered in Neumünster, Germany. The company designs, develops, and produces underwater electrical, fibre optic, and hybrid circular connectors used in harsh marine environments at depths of up to 10,000 metres, and is one of three global market leaders in the underwater connector segment, with a portfolio of more than 15,000 connector variants across 16 product series.
Core technology is centred on patented vulcanised elastomer insulators with conical insulation barriers and lip seals, combined with pressure-compensation and oil-filled designs that enable wet underwater mating and de-mating. The product range supports operating voltages up to 12 kV AC, currents up to 1,000 A, contact counts up to 265, and housings in bronze, stainless steel, and titanium. Supporting products include custom cables and cable sets, junction boxes, oil-filled hose connection systems (API 16D/17E conformant), and pressure hull penetrators qualified to VG 85519. Manufacturing is vertically integrated across design, tool-making, CNC machining, elastomer injection moulding, assembly, and qualification testing at two production sites totalling 5,800 m².
The business model is a direct enterprise field sales operation, organised by industry vertical (naval/submarine, offshore oil and gas, renewable energy, marine research and shipbuilding, pump industry, construction machines) and supported by an eleven-country network of regional channel partners. Revenue is generated primarily through quote-based, project-specific hardware sales of connectors, cables, and integrated subsea system solutions, augmented by engineering and qualification services. Customers are enterprise accounts (naval shipbuilders, offshore O&G operators, renewable energy developers, research institutions, aquaculture operators), with no public pricing, no disclosed revenue, and no public funding history.
GISMA Steckverbinder firmographics
Firmographics- Name
- GISMA Steckverbinder
- Legal name
- GISMA Steckverbinder GmbH
- Website
- https://gisma-connectors.de
- Company type
- Private
- Founded year
- 1983
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- GISMA Steckverbinder GmbH, founded 1983 in Neumünster, Germany, is an independent, owner-managed manufacturer of underwater electrical, fibre optic, and hybrid connectors (15,000+ variants across 16 series) serving naval, offshore oil and gas, renewable energy, marine research, and aquaculture customers as one of three global market leaders in the segment.
- Ownership category
- akta.pro rank
Where GISMA Steckverbinder is headquartered
LocationHeadquarters
- HQ city
- Neumünster
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
GISMA Steckverbinder business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Underwater connector product sales: Sale of electrical, fibre optic and hybrid circular connectors across 16 product series, including standard connectors and custom/special designs. The manufacturing program covers more than 15,000 different connectors.
- Cable and cable set sales: Sale of custom-designed cables and pre-assembled cable sets tailored to customer specifications, including hybrid system cables, electrical cables, coax cables, and fibre optic cables.
- Junction box and subsea system solutions: Customised junction boxes, subsea stab plates, oil-filled hose connection systems, and complete cable system solutions supplied from one source.
- Engineering and qualification services: Services including project sketches, 3-D models, rapid prototyping, testing, and qualification support for complex underwater connector projects. Also includes personal on-site consultation and video conferences for requirement profiling.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom project-based pricing |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
GISMA Steckverbinder product offering
Product offeringCore offering
GISMA Steckverbinder GmbH develops, designs, and produces high-quality underwater electrical, fibre optic, and hybrid circular connectors engineered for harsh marine and subsea environments. The portfolio spans 16 connector series with more than 15,000 variants, complemented by custom cables, cable sets, junction boxes, oil-filled hose connection systems, and pressure hull penetrators. Production is carried out in-house in Neumünster, Germany, serving naval, offshore oil and gas, renewable energy, marine research, and subsea industrial applications.
Product overview
GISMA Steckverbinder GmbH offers a comprehensive portfolio of underwater connectors specialized for harsh marine environments. The product range includes 16 connector series (Series 10, 16, 22, 24, 27, 35, 40, 51, 60, 61, 64, 71, 80, plus special series) spanning electrical, fibre optic, and hybrid connector types with up to 265 contacts, voltages up to 6.6 kV, currents up to 1000 A, and depth ratings to 10,000m. Supporting products include custom cables, cable sets, junction boxes, oil-filled hose connection systems, and pressure hull penetrators. The connectors are available in bronze, stainless steel, and titanium materials, with ATEX-certified options for hazardous environments.
Differentiator
Problem solved
Functional benefit
Products and services
- Series 10 Underwater Connectors Electrical round connectors with robust metal housing designed for harsh environments and underwater mating, supporting wet/underwater pluggable operation with voltages up to 6.6 kV, currents up to 1000 A, and test pressures up to 800 bar.
- Series 16 High-Pressure Connectors High-pressure tight dry connectors made of corrosion-resistant titanium for long-term use, featuring longitudinally watertight vulcanised elastomer insulators with patented lip seal, suitable for hose connection systems.
- Series 22 Bronze Connectors Electrical and hybrid connectors with robust bronze shell for long-term underwater applications, featuring longitudinally watertight vulcanised elastomer insulators with patented lip seal and suitable as pressure hull penetrators according to VG 85519.
- Series 24 Watertight Installation Connectors Watertight installation connectors meeting IP 66 to IP 68 safety class requirements with modular design for robust connection technology, seawater-resistant bronze shells, and crimp contacts for quick assembly.
- Series 27 Marine Connectors Pressure watertight special marine connectors for A-cable, B-cable, and C-cable configurations and A-B-penetrators with hermetically sealed insulating inserts, available in seawater-resistant bronze or aluminium.
- Series 35 Miniature Connectors Miniature connectors with robust metal housing for harsh environments and underwater applications with compact dimensions, featuring longitudinally watertight vulcanised elastomer insulator with patented insulation cones and double o-ring sealing.
- Series 40 Fibre Optic and Hybrid Connectors Pressure watertight fibre optic and hybrid connectors developed for long-term underwater applications with double o-ring sealing, modular contact inlay, and high-quality PC optical fibre inserts for secure data transmission.
- Series 51 Single-Pole Device Penetrators Single-pole device penetrators with coax contacts providing compact N-standard solutions for system technology, featuring double o-ring seals, longitudinally coax N-interface with 50 Ohm impedance, and test pressure up to 100 bar.
- Series 60 Elastomer Connectors Robust elastomer connectors designed for field termination and easy extension of connection cables, dry and wet mateable with 4 contacts, operating voltage up to 500 V, current up to 70 A, and pressure watertight up to 50 bar.
- Series 61 Renewable Energy Connectors Electrical round connectors designed for the special requirements of renewable energies with longitudinally watertight vulcanized elastomer insulators, available in bronze with contact arrangements up to 37 contacts, operating voltage up to 1.2 kV, and current up to 680 A.
- Series 64 Submarine Charging Plugs Plugs designed for easier and safer handling of charging process and land supply of submarines, featuring completely isolated plastic housing with gold-plated high-performance contacts and splash water protection (min. IP64).
- Series 71 ATEX Cable Penetrators Cable penetrators designed for applications in Exd-areas (ATEX-approved) for use in water depths down to 50 m, featuring pressure watertight cable connection using glands with dry mating capability inside the device.
- Series 80 ROV Push-Pull Connectors Push-pull connectors specially designed for underwater ROV applications with extreme reliability requirements, oil-filled and pressure compensated offering constant mating forces regardless of water depth, with 25-year design lifetime.
- Special Connector Series 30 Special connector series designed for marine research, offshore industry, and renewable energy applications. Wet pluggable and underwater pluggable connectors with bronze housing.
- Special Pressure Hull Penetrators Electrical and hybrid pressure hull penetrators with stainless steel shell designed for long-term underwater applications, featuring longitudinally watertight vulcanised elastomer insulators with patented lip seal, tested for shock and underwater explosion.
- Down-Hole Connector Down-hole hybrid connector designed for difficult environmental requirements of the offshore industry, featuring stainless steel housing (1.4462), working temperature up to 150°C, with 3 electrical and 1 fibre optic contact.
- Custom Cables Custom-designed cables including electrical, coax, fibre optic, and hybrid system cables, featuring PUR jacket material, lateral and longitudinal watertightness, strain relief up to 300,000 N, and outer steel armouring.
- Custom Cable Sets Customized cable sets designed according to individual customer specifications with all required tests. Connectors available in bronze, stainless steel, and titanium with contact arrangements from 3 to 265 contacts.
- Oil-Filled Hose Connection Systems Hose connection systems tailored to customer requirements for offshore, marine research, and renewable energy applications, API-conform according to Spec 16D and 17E with unique part numbers and traceability codes.
- Special Junction Boxes Customized junction boxes combining multiple individual cables into system cables or distributing system cables to multiple cables, available with integrated electronic modules, strain relief, and pressure-compensated options for deep-water applications.
- Junction Boxes Customized junction boxes available on request, combining multiple cables into system configurations with environmental audits available.
Quantifiable outcome
- Standard connectors rated for diving depths up to 10,000m
- +4 more outcomes
Companies that use GISMA Steckverbinder
Customer profileNamed customers6 records
Segments7 records
Ideal customer profiles5 records
GISMA Steckverbinder technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
GISMA Steckverbinder partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core and regional.
- German Association for Marine Technology (GMT)coreGISMA is a member of the German Association for Marine Technology (GMT), a maritime technology industry association. This membership provides industry networking, visibility, and participation in the broader marine technology ecosystem in Germany and internationally.
- Rock-firm Interconnect Systems Co., Ltd.regionalLocal supplier/representative for GISMA products in China. Operates as a regional channel partner facilitating sales and support for Chinese customers.
- MacArtney France SASregionalMacArtney France SAS serves as the local supplier for GISMA connectors in France, providing regional sales and support capabilities.
- MacArtney Benelux BVregionalMacArtney Benelux BV serves as the local supplier for GISMA connectors in the Netherlands and Benelux region.
- Transmark Subsea ASregionalTransmark Subsea AS is the local representative/distributor for GISMA connectors in Norway, supporting the offshore oil and gas and subsea technology markets.
- CPE Italia S.p.a.regionalCPE Italia S.p.a. serves as the local supplier for GISMA connectors in Italy.
- Dynamic Engineering & Energy Solutions (DEES-Group)regionalDEES-Group serves as the local supplier for GISMA connectors in Greece.
- Marubeni Ele-Next Co., Ltd.regionalMarubeni Ele-Next Co., Ltd. serves as the local supplier for GISMA connectors in Japan.
- Nippon Aircraft Supply Co., Ltd.regionalNippon Aircraft Supply Co., Ltd. serves as the local supplier for GISMA connectors in Japan.
- Jungjin Systems Co., Ltd.regionalJungjin Systems Co., Ltd. serves as the local supplier for GISMA connectors in South Korea.
- GLOBAL Sanayi Ltd.Sti.regionalGLOBAL Sanayi Ltd.Sti. serves as the local supplier for GISMA connectors in Türkiye.
- SMI Scientific Management International Ltd.regionalSMI Scientific Management International Ltd. serves as the local supplier for GISMA connectors in the United Kingdom.
Scale indicators7 records
Recent moves7 records
Expansion highlights4 records
GISMA Steckverbinder competitors and assessment
Company assessmentDirect peers
- MacArtney: Denmark-based specialist in underwater connectors, subsea cables, and junction boxes serving naval, O&G, and renewables markets — most direct peer, with overlapping product portfolios and shared regional channel relationships in Benelux and France.
- Teledyne ODI: US-based manufacturer of wet-mate subsea electrical and fibre-optic connectors, including ROV-mateable designs for oil & gas and military markets — directly comparable product offering to GISMA's ROV/Series 80 line.
- Hydro Group: UK-based specialist in subsea electrical and fibre-optic connectors, cables, and assemblies serving naval and offshore markets — comparable in scale, product mix, and qualification depth (defense and O&G).
- Seacon: US-based manufacturer of underwater electrical and optical connectors for defense, oceanographic, and offshore applications — closely overlaps GISMA's wet-mate, high-pressure, and military-qualified product scope.
- BIRNS: US-based maker of subsea electrical connectors, penetrators, and lighting for naval and oceanographic applications — comparable in mission-critical subsea interconnect focus and military customer base.
Broad incumbents
- TE Connectivity: Global broad-line connector and sensor manufacturer with a subsea/marine product line — competes with GISMA in commercial marine and offshore segments via scale advantages, but does not specialise in ultra-deep or naval wet-mate connectors.
- Eaton (Cooper Interconnect): Diversified industrial manufacturer whose Cooper Interconnect business supplies subsea and shipboard electrical interconnect — overlaps with GISMA in naval/defense but as part of a much larger portfolio.
- Siemens Energy: Major supplier of subsea power and automation systems for offshore O&G and renewables — competes in offshore power connectors and penetrators as part of broader integrated subsea solutions, but does not focus on standalone wet-mate connector business.
- ABB: Global industrial group with subsea power and control systems for offshore O&G, including subsea cable and connector solutions — adjacent competitor at the systems level, not a focused underwater connector specialist.
- Amphenol: One of the world's largest connector manufacturers with broad marine and military interconnect exposure — overlaps with GISMA in defense connectors but lacks a comparable ultra-deep-sea wet-mate specialisation.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
GISMA Steckverbinder social profiles
Digital presenceGISMA Steckverbinder compliance and trust
Trust signalCompliance4 records
GISMA Steckverbinder financial estimates
Financial estimateRevenue estimate
Valuation estimate
GISMA Steckverbinder leadership team
Management profileNumber of profiles
Profiles10 records
GISMA Steckverbinder funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
GISMA Steckverbinder M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about GISMA Steckverbinder
What does GISMA Steckverbinder do?
GISMA Steckverbinder GmbH develops, designs, and produces high-quality underwater electrical, fibre optic, and hybrid circular connectors engineered for harsh marine and subsea environments. The portfolio spans 16 connector series with more than 15,000 variants, complemented by custom cables, cable sets, junction boxes, oil-filled hose connection systems, and pressure hull penetrators. Production is carried out in-house in Neumünster, Germany, serving naval, offshore oil and gas, renewable energy, marine research, and subsea industrial applications.
Is GISMA Steckverbinder a public or private company?
GISMA Steckverbinder is a private company. It is classified as family owned and is currently operating.
When was GISMA Steckverbinder founded?
GISMA Steckverbinder was founded in 1983. It employs 51 to 100 people.
Where is GISMA Steckverbinder based?
GISMA Steckverbinder is headquartered in Neumünster, Germany, in the Europe region.
How does GISMA Steckverbinder make money?
Four revenue lines are on record. Underwater connector product sales are the primary driver. The others are cable and cable set sales, junction box and subsea system solutions and engineering and qualification services.
Who are GISMA Steckverbinder's main competitors?
Direct peers on record are MacArtney, Teledyne ODI, Hydro Group, Seacon and BIRNS. Broad incumbents are TE Connectivity, Eaton (Cooper Interconnect), Siemens Energy, ABB and Amphenol.
Does GISMA Steckverbinder have an API?
No public API is recorded for GISMA Steckverbinder.