What BIRNS does

BIRNS, Inc. is a privately held, family-owned designer and manufacturer of high-performance underwater interconnect systems, subsea cable assemblies, marine and nuclear lighting, and submarine hull penetrators, headquartered in Oxnard, California. Founded in 1954 and now in its seventh decade of continuous operation, the company serves defense contractors, US and international nuclear power facilities, deep-ocean ROV/AUV operators, manned submersible programs, commercial diving operators, and offshore energy developers. Its core technology stack centers on dry-mate subsea connectors rated to 6km depth, including the BIRNS Millennium series (configurable power/data/fiber optic hybrids) and the newer Meridian high-amperage line, alongside NPT and UTS penetrators and military-grade hull penetrators with up to 161 contacts. Proprietary technologies include open-face rated coax to 6,000m, 9.4+ Gbps Cat 8.2 subsea data transfer, DPT delamination prevention, and 5,000V oil-filled cable connector systems, all validated through in-house 20,000 PSI hydrostatic and helium leak testing.

BIRNS makes money primarily through direct sale of engineered hardware, with two main revenue streams: (1) underwater connectors and cable assemblies sold via enterprise field sales and a recently launched e-commerce channel for standardized products, and (2) marine and nuclear lighting systems sold through both direct sales and authorized commercial diving dealers. Pricing is quote-based and not publicly disclosed for custom configurations. The company holds an unusually dense set of regulatory certifications for a firm of its size — AS9100:2016, ISO 9001:2015, NAVSEA S9320-AM-PRO-020 (one of only seven commercial holders), NRC 10CFR50 Appendix B compliance, ABS Product Design Assessment, ANSI/ASME NQA-2, and IEEE-344 seismic qualification — which collectively serve as a structural barrier to entry in defense, naval, and nuclear markets. Named customers include the US Navy, BAE Systems, Lockheed Martin, Bluefin Robotics, Bechtel, Korea Nuclear Facilities, and major research institutions (JHU/APL, HURL, IceCube/University of Wisconsin).

The go-to-motion combines enterprise field sales for complex custom configurations, RFQ-based quote handling for defense and nuclear customers, an authorized dealer network for commercial diving products, and self-service e-commerce for standard catalog items. The company participates actively in industry trade shows (Oceanology International, Ocean Business) and runs trade-publication advertising, a quarterly newsletter, an executive blog, and case-study-driven content marketing. Operations remain concentrated at the single Oxnard manufacturing facility, with international revenue driven primarily by the nuclear lighting business and select defense exports.

Name

BIRNS

Legal name

BIRNS, Inc.

Website

https://birns.com

Company type

Private

Founded year

1954

Operating status

Operating

Headcount range

11–50 employees

Short description

BIRNS, Inc. is a family-owned, AS9100-certified manufacturer founded in 1954 that designs and produces high-performance underwater connectors, subsea cable assemblies, hull penetrators, and nuclear facility lighting for the US Navy, defense primes, nuclear power plants, and deep-ocean ROV/AUV operators.

Ownership category

akta.pro rank

Product category

Underwater Connectors & Subsea Lighting

NAICS

Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511)

akta.pro primary industry

Electrical Engineering & Power Distribution (Generation, Switchboards, Cabling, Lighting) (IMAJAGAF)

akta.pro secondary industries

Submarine Outfitting, Habitability & Auxiliary Systems Manufacturing (IMAJAOAM), Submarine Systems & Components (Pressure Hull, Ballast, Life Support) (IMABAKAL)

Keywords

• Underwater connectors
• Subsea cable assemblies
• Nuclear facility lighting
• Submarine hull penetrators
• Marine lighting systems

Headquarters

HQ city

Oxnard

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Underwater Connectors & Cable Assemblies: Sale of high-performance underwater connector systems, subsea cable assemblies, and penetrators. Products include the Millennium series, Meridian series, NPT penetrators, UTS penetrators, and custom configurations. Revenue from both standard catalog items and custom-engineered solutions.
2. Underwater & Nuclear Lighting Systems: Sale of dive lights, underwater floodlight systems, nuclear facility lighting, and emergency lighting equipment. Includes products like BIRNS Snooper series, Lumena-6 LED floodlight, Quantum high bay lights, and seismically-qualified nuclear emergency lights.
3. Professional Services & Testing: Value-added subcontract services including cable and lighting assemblies, termination and assembly, in-house hydrostatic and helium pressure testing, and custom engineering. Testing services provided to external customers requiring ABS/DNV certification.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels9 records

Core offering

BIRNS designs and manufactures high-performance underwater connectors and subsea cable assemblies (Millennium and Meridian series), submarine hull penetrators (NPT, UTS/UN, CSI/SUBSAFE military grade), and a range of underwater and nuclear facility lighting. Products are engineered for mission-critical reliability in extreme environments including subsea depths to 6,000m, military submarines, and seismically-qualified nuclear power facilities. The company additionally offers value-added services including custom cable/lighting assemblies, termination, in-house hydrostatic and helium pressure testing, and ABS/DNV certification support.

Product overview

BIRNS is a manufacturer of high-performance underwater connectors, subsea cable assemblies, underwater lighting systems, and nuclear facility lighting. The product portfolio centers on two core hardware categories: (1) Subsea Interconnect Solutions encompassing the BIRNS Millennium™ (dry-mate connectors to 6km depth with power/data/fiber hybrid configurations) and BIRNS Meridian™ (225A high amperage connectors) series, along with cable stock and custom cable assemblies; (2) Subsea Penetrators including NPT, UTS/UN, and custom military-grade hull penetrators for submarines and submersibles; and (3) Marine Lighting Systems spanning flood/work lights (Snooper series, XT120), helmet/camera lights (Aquila, VTX), security lights (Pisces), and PVHO chamber lighting. Additionally, a dedicated Nuclear Lighting Division provides emergency lights (ELF-LED), high bay lights (Quantum, Quantum-C), low bay lights (Quantum-Q), underwater 360° lights (TubeLight, Curie II), and underwater floodlights (Lumena-6, Corona) specifically designed for nuclear power facility applications with seismic qualification and NRC compliance. The company operates with AS9100:2016 certification and NAVSEA PRO-020 approved manufacturing facilities.

Differentiator

Problem solved

Functional benefit

Brands

• BIRNS Millennium: Configurable high-performance dry-mate subsea interconnect product range designed for deep submergence applications to 6km depth.
• BIRNS Meridian
• BIRNS Nuclear Lighting Division

Products and services

• BIRNS Millennium Subsea Interconnect Products Configurable high-performance dry-mate subsea connector range designed for deep submergence applications to 6km depth, available in titanium or stainless-steel connectors with solid (molded) or oil-filled cable in straight or 90° configurations. Supports high and low voltage, coax, fiber optic, and electro-coax, electro-optical, and electro-opto-coaxial hybrids; non-coax configurations are open-face rated to 6,000 meters without need for glass sealing.
• BIRNS Meridian Subsea Interconnect Products Dry-mate high amperage subsea connector line rated at 225 Amps, open face rated to 6km depth, ideal for battery packs and thrusters on crewed and uncrewed subsea vehicles. Features tactile alignment index ridge, compact form factor, multiple pin configurations (including M40 with a single 85 mm² / 3/0 AWG contact), standard and reverse gender versions, and withstands reverse pressure for installation in dry or oil-filled canisters.
• BIRNS Millennium Cable Stock Exclusive custom cables for BIRNS Millennium pin configurations, kept in stock for power, signal, fiber optic, and hybrid connectivity applications to support rapid delivery of Millennium connector assemblies.
• Custom Cable Assemblies Custom-designed and manufactured connectors with oil-filled cable assembly, splices, breakouts, and molding capabilities performed in NAVSEA S9320-AM-PRO-020 certified facility, tailored to specific subsea, defense, or nuclear performance requirements.
• BIRNS NPT Penetrators National Pipe Tapered penetrators with tapered pipe threads widely used on diving bells and decompression chambers, ABS certified and tested with inclusive pricing for underwater vehicles, systems, and hyperbaric facilities.
• BIRNS UTS (UN) Penetrators Penetrators with standard UN-2A mounting threads used on diving bells, submarines, and submersibles, with a standard 70 bar (1,000 PSI) pressure rating and ABS Product Design Assessment coverage.
• Military Grade Submarine Hull Penetrators (CSI/SUBSAFE) CSI/SUBSAFE high-density electro-opto-coax military-grade submarine hull penetrators with configurations available up to 161 contacts in inserts with OD under 2 inches, designed for safe passage of cables, sensors, and equipment through submarine pressure hulls.
• Custom Penetrators Custom-made hull penetrators transmitting electrical power and signal through pressure hulls of human-occupied submarines and submersibles, engineered to specific performance requirements including depth, contact count, and connector interface.
• BIRNS Marine Lighting Systems Underwater lighting systems for divers, diving bells, submarines, and ROVs, featuring rugged designs proven to perform in the harshest subsea environments. Includes Snooper II/III, Snooperette, Snooperette-LED, Snooperette-UV flood and work lights, Aquila/Aquila-LED/VTX helmet and camera lights, BIRNS Pisces security light, and PVHO chamber lighting.
• BIRNS Nuclear Lighting Products Nuclear facility lighting solutions including seismically-qualified emergency lights (ELF-LED), high bay LED floodlights (Quantum, Quantum-C, Quantum-Q), underwater 360° lights (TubeLight, Curie II, Refueling Light), and underwater floodlights (Lumena-6, Corona, Corona Major) trusted by 83% of US nuclear power stations and major international nuclear operators.
• 6,000M Open Face Rated COAX Cable Assemblies Ultra-low-loss RF pressure-rated coax cable assemblies featuring BIRNS 1B connectors capable of 18GHz and beyond, supporting SHF band Ku frequencies for US military GPS-frequency applications, with exclusive 1C (50Ω) and 1V (75Ω) RF contacts combinable in the same connector.
• Professional Cable & Lighting Assembly Services Value-added subcontract services including cable and lighting assembly, termination, splicing, breakouts, and molding performed in a NAVSEA S9320-AM-PRO-020 certified facility, with custom engineering support for unique applications.
• In-House Hydrostatic & Helium Pressure Testing Services In-house hydrostatic pressure testing up to 20,000 PSI and helium leak testing for man-rated penetrators, connectors, and cable assemblies, supporting ABS and DNV certification requirements for external customer subsea and hyperbaric programs.

Quantifiable outcome

• Data transfer rates of 9.4+/- 0.1 Gbps verified through pressure range 0 to 8700 PSI (600 bar)
• +3 more outcomes

Named customers11 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• JOWO SystemtechnikcoreStrategic or Co-development Partner · 8 January 2025Strategic partnership announced January 8, 2025 for subsea connectivity solutions. JOWO Systemtechnik and BIRNS collaborate on technology development and market expansion in the subsea systems sector.
• C-PowercoreStrategic or Co-development Partner · 16 April 2021Partnership on SeaRAY Autonomous Offshore Power System demonstration. BIRNS provides subsea power connectivity solutions for C-Power's autonomous offshore power system serving offshore wind, oil and gas, and ocean observing markets.
• Dive Commercial InternationalcoreChannel Partner/ Reseller/ DistributorAuthorized dealer for BIRNS commercial diving products including lights, connectors, and penetrators.
• Divers Supply, IncorporatedcoreChannel Partner/ Reseller/ DistributorAuthorized dealer for BIRNS commercial diving products including underwater lighting, connectors, and MPI/NDT systems.
• IUC TechnologiescoreChannel Partner/ Reseller/ DistributorAuthorized dealer for BIRNS commercial diving products, distributing BIRNS lighting and connector solutions to commercial diving market.
• RedZone RoboticscoreStrategic or Co-development PartnerBIRNS designed and manufactured 186-conductor waterproof electromechanical cable assembly for Pioneer Robot, capable of withstanding 3,000 pounds of load in any direction in Chernobyl's high-radiation environment.
• Phoenix InternationalminorStrategic or Co-development PartnerDeveloped quick-disconnect high-voltage EOM cable termination for Phoenix International with 3 single-mode fibers, 3x3.6Kv copper power lines, and 36,000 lb mechanical strength member.
• University of Wisconsin Physical Sciences LaboratoryminorStrategic or Co-development PartnerSupplied high-power metal shell connectors for IceCube Neutrino Project submersible pumps and miniature instrumentation connectors for temperature and pressure sensors for 1 Km3 ice instrumentation at South Pole.

Scale indicators7 records

Recent moves7 records

Expansion highlights7 records

Emerging players

• BlueRobotics: Low-cost wet-mate underwater connectors and subsea components targeted at the ROV/AUV hobbyist and research market; adjacent rather than direct competitor to BIRNS' high-performance military-grade connector portfolio.
• OKi (Nuclear Lighting): Supplier of nuclear-grade lighting for BWR and PWR facilities; competes with BIRNS in seismic- and radiation-qualified nuclear emergency and area lighting.
• Underwater Kinetics: Manufacturer of professional dive lights and underwater lighting for commercial and scientific divers; overlaps with BIRNS' Snooper and Aquila dive light product lines.

Direct peers

• MacArtney Underwater Technology: Denmark-based designer and manufacturer of subsea connectors (SubConn), cable assemblies, and underwater electrical systems serving ROVs, AUVs, and offshore energy — the closest direct competitor to BIRNS' Millennium and Meridian connector lines.
• Teledyne Marine (SeaCon / ODI): Teledyne's marine division includes SeaCon wet-mate connectors and Ocean Design Inc. (ODI) subsea interconnect products, directly competing with BIRNS in subsea electrical penetrators and connectors for offshore and naval platforms.
• HydroBond Engineering: UK-based specialist in subsea electrical connectors, penetrators, and cable assemblies for defense, oil & gas, and oceanographic applications — a direct competitor in the wet-/dry-mate subsea connector market.

Broad incumbents

• Amphenol (MIL/Aerospace): Amphenol's military and aerospace divisions produce naval and submarine-grade connectors and penetrators, making it a broad incumbent competitor for BIRNS' defense and submarine hull penetrator business.
• TE Connectivity: Global leader in connectivity and sensors serving aerospace, defense, and marine markets with ruggedized connectors and cable assemblies; broader portfolio but overlaps with BIRNS on defense/subsea interconnect.
• Glenair: Large US manufacturer of military and aerospace interconnect solutions including submarine and naval connector families; competes with BIRNS on MIL-spec penetrators and high-reliability submarine interconnects but as part of a broader portfolio.
• Eaton (Cooper Interconnect): Eaton's Cooper Interconnect line supplies military-grade electrical interconnects including submarine and diving equipment connectors, comparable to BIRNS' military submarine penetrators but as part of a much broader power-management portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/BIRNS_Inc
• YouTubeyoutube.com/user/BIRNSInc
• Facebookfacebook.com/BIRNSInc
• LinkedInlinkedin.com/company/birns-inc-
• Instagraminstagram.com/birnsinc#

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about BIRNS