What Cassens & Plath does

Cassens & Plath GmbH is a Bremerhaven, Germany-based precision instrument manufacturer founded in 1902 that produces nautical navigation equipment for two primary customer segments: professional commercial shipping (Berufsschifffahrt) and yachting. The company operates as a privately held GmbH with 11–50 employees and is led by two general managers, Mathias Reichel and Philipp Murmann. Its product portfolio spans yacht compasses (BETA, DELTA, ZETA, IOTA, SIGMA, T12, TYPE series) with multiple mounting configurations, flat glass compasses and binnacles (including the Class A-approved SESTREL SR4 and REFLECTA bearing systems), sextants for celestial navigation, electronic navigation modules (NETcourse, NEMAcourse, TRUEcourse, CAMcourse, SENSOcourse, CROSScourseV, courseCOMPARATOR) and a nautical inventory category covering marine binoculars (SESTREL, Steiner, Fujinon), chronometers (Cassens & Plath 120 series, Walker), weather instruments, inclinometers, and AIS/MOB safety devices (easyRESCUE-PRO BT, easyTRX3S, easy2-MOB). MED (Wheelmark) certification on commercial-grade compasses anchors the regulated commercial-shipping value proposition.

Underlying technology is rooted in handcrafted mechanical and electromechanical precision: all assembly, adjustment, and testing occurs at the Bremerhaven facility, with each yacht compass subjected to watertightness testing at -30°C and a deliberate avoidance of plastic components in favor of brass, glass, and polycarbonate. The company emphasizes German manufacturing, individual calibration, and longevity over cost. Electronic products appear to use conventional NMEA-standard marine data interfaces rather than any advanced autonomous or software-defined navigation stack.

The business model is straightforward hardware sales through two distribution channels: a direct-to-consumer e-commerce storefront at shop.cassens-plath.de serving yacht owners and small commercial buyers globally, and direct B2B sales for larger commercial shipping and shipyard customers with custom configurations. Pricing is per-unit, ranging from roughly €100 for basic accessories to over €4,000 for premium electronic course monitors and inclinometers. The company supplements its sales motion with content marketing (a technical blog on deviation/compensation), email newsletters, trade-show participation (notably SMM Hamburg 2026), and organic social media on Instagram and Facebook. No external investors, funding rounds, or M&A activity are disclosed.

Name

Cassens & Plath

Legal name

Cassens & Plath GmbH

Website

https://cassens-plath.de

Company type

Private

Founded year

1902

Operating status

Operating

Headcount range

11–50 employees

Short description

Cassens & Plath is a 1902-founded German manufacturer of precision nautical navigation instruments — compasses, sextants, binnacles, and electronic course systems — sold worldwide to commercial shipping operators and yacht owners via direct e-commerce and B2B channels.

Ownership category

akta.pro rank

Product category

Marine Navigation Instruments

NAICS

Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Search, Detection, Navagation, Guidance, Aeronautical Sys (3812), Optical Instruments & Lenses (3827), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Marine Sensors, Instrumentation & IoT (Condition Monitoring) (IMAJAJAI)

akta.pro secondary industries

Life-Saving Appliances & Safety Equipment (Davit Systems, Lifeboats, Firefighting) (IMAJAIAG), Marine Safety & Navigation Electronics Retail (PFDs, EPIRBs, GPS, VHF) (CRAMAIAH)

Keywords

• Marine navigation instruments
• Marine magnetic compasses
• Celestial navigation sextants
• Yacht steering compasses
• Marine electronic navigation

Headquarters

HQ city

Bremerhaven

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Navigation Instruments Sales: Sale of physical nautical navigation instruments including compasses, sextants, electronic navigation equipment, chronometers, binoculars, and nautical accessories. Products are sold directly through the company's online shop with pricing ranging from approximately €100 to over €4,000 depending on product type and complexity.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Cassens & Plath is a German manufacturer of precision nautical navigation instruments, producing magnetic compasses (yacht compasses, flat glass compasses, binnacles), sextants for celestial navigation, electronic navigation systems (course indicators, monitors, alarms, data converters), and nautical inventory (binoculars, marine chronometers, weather instruments, AIS/MOB safety devices). All instruments are hand-assembled, adjusted, and tested at the company's Bremerhaven facility, with products certified to international maritime standards (MED/Wheelmark).

Product overview

Cassens & Plath is a German manufacturer of precision nautical navigation instruments with a comprehensive portfolio centered around compasses, sextants, and electronic navigation systems. Their product ecosystem includes: (1) Yacht compasses (Yachtkompasse) in multiple series (TYPE, BETA, DELTA, ZETA, IOTA, SIGMA, T12) with various mounting options (flush, surface, ceiling); (2) Flat glass compasses and binnacles (Flachglaskompasse & Stände) including the SESTREL SR4 Class A compass and various bearing/steering compasses; (3) Electronic navigation equipment (Elektronische Navigation) comprising course data transmitters, indicators, monitors, alarms, and converters under the NETcourse, NEMAcourse, TRUEcourse, CAMcourse, SENSOcourse, CROSScourseV, and courseCOMPARATOR brands; (4) Complete compass systems (Kompassanlagen) combining compass, binnacle, and electronic transmission; (5) Sextants for celestial navigation; (6) Nautical inventory including binoculars, chronometers, weather instruments, and marine electronics like AIS transponders and MOB distress transmitters; (7) Maintenance and calibration services. The company emphasizes precision manufacturing and quality testing in Germany, with products tested at -30 degrees Celsius for extreme condition reliability.

Differentiator

Problem solved

Functional benefit

Products and services

• Sextants Precision nautical sextants for celestial navigation, used by professional mariners and bluewater sailors for backup navigation when electronic systems are unavailable. Handcrafted in Bremerhaven, Germany.
• Yacht Compasses Precision magnetic compasses specifically designed for yachting and sailing applications, available in multiple series (TYPE, BETA, DELTA, ZETA, IOTA, SIGMA, T12) with flush mount, surface mount, and ceiling mount configurations. Tested at -30°C for watertightness and built primarily from brass and glass to avoid plastic components.
• Flat Glass Compasses and Binnacles Flat glass compasses and binnacles for precise compass reading on commercial vessel wheelhouses, including steering compasses, bearing/reflection compasses (REFLECTA series 1-5), the SESTREL SR4 Class A compass with 175mm card diameter, Sperry Marine JUPITER 2060, ceiling compasses, and MED/Wheelmark-certified bearing compass systems such as the Peilstand/160.
• Electronic Navigation Systems Marine electronics for professional maritime navigation including course indicators (NEMAcourse), course monitors (TRUEcourse), course monitoring alarms (SENSOcourse), course data transmitters (NETcourse), course data converters (CROSScourseV), course difference alarms (courseCOMPARATOR), video remote compass reading (CAMcourse), and electronic inclinometers (NAVITRON NT1750 EPR, EI-1). Complete compass systems (Kompassanlagen) combine compass, binnacle, and electronic transmission for commercial vessels.
• Nautical Inventory Comprehensive range of nautical inventory for worldwide navigation, coastal navigation, and inland waterway navigation, including marine binoculars (SESTREL DB/AB/AY 7x50, STEINER COMMANDER 7x50C Z2, STEINER NAVIGATOR Pro 7x50c, FUJINON FMTR-SX2 7x50), marine chronometers (Cassens & Plath 120 Series, Walker 2090/2080/2050), weather and measuring instruments (barometers, thermo-/hygrometers), clinometers, navigation aids, navigation sets, books and tables, signals, and lead lines.
• Marine Safety Electronics Maritime safety electronics including AIS search and rescue transmitters (Seenotrettungssender AIS SART easyRESCUE-PRO BT), AIS transceivers/transponders with WiFi (easyTRX3S), and man-overboard (MOB) distress transmitters (easy2-MOB) for emergency rescue situations at sea.
• Maintenance and Calibration Services Maintenance and calibration services (Wartung & Kalibrierung) for nautical instruments ensuring optimal accuracy and reliability, offered on-site to customers and at the Bremerhaven facility.
• Berufsschifffahrt (Commercial Shipping Solutions) Dedicated range of professional navigation instruments for commercial maritime shipping applications meeting international maritime standards, including MED/Wheelmark certified compasses, binnacles, and complete compass systems (Kompassanlagen) for commercial vessels.

Quantifiable outcome

• Every compass undergoes watertightness testing at -30 degrees Celsius

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Direct peers

• Plastimo: Plastimo is a French marine equipment manufacturer offering compasses, sextants, safety equipment, and other navigation products for sailing and motor boating. It overlaps with Cassens & Plath in the European marine compass and instrument market and serves similar yacht and small commercial segments.
• Weems & Plath: Weems & Plath is a US-based manufacturer of nautical precision instruments including sextants, marine compasses, nautical charts, and navigation tools. It is the closest direct peer to Cassens & Plath, sharing the same heritage-driven positioning in traditional marine navigation and serving overlapping recreational and professional sailing customers.
• Ritchie Navigation: Ritchie Navigation is a US manufacturer specializing in magnetic marine compasses for recreational and commercial vessels. It directly competes with Cassens & Plath in the marine compass category, targeting similar boat builder, dealer, and end-customer channels across yacht and small commercial segments.
• Lilley & Gillie: Lilley & Gillie is a UK-based manufacturer of marine magnetic compasses and binnacles for commercial and offshore vessels. It directly competes in the Class A compass and binnacle segment (Cassens & Plath's SESTREL SR4 is even pre-drilled for Lilley & Gillie TMC sensors), serving overlapping commercial shipping customers.

Broad incumbents

• Brunton: Brunton is a US-based manufacturer of outdoor and marine navigation instruments including lensatic and magnetic compasses, now part of Leupold & Stevens. It competes with Cassens & Plath in marine and outdoor compass categories and overlaps in serving yacht and expedition/adventure customer segments.
• Suunto: Suunto (part of Amer Sports) is a Finnish manufacturer of precision instruments including compasses, dive instruments, and outdoor navigation devices. It is a broad incumbent in precision navigation with a consumer- and sports-focused portfolio that overlaps with Cassens & Plath in marine and outdoor compass categories.
• Sperry Marine: Sperry Marine (a Northrop Grumman company) supplies gyrocompasses, integrated bridge electronics, and marine navigation systems for commercial and naval vessels. It is both a brand Cassens & Plath distributes (Sperry Marine JUPITER 2060) and a broader incumbent in commercial marine navigation systems targeting similar shipping customers.
• Raymarine: Raymarine (part of Teledyne FLIR) is a major manufacturer of marine electronics including multifunction displays, radar, AIS, autopilots, and heading sensors for recreational and light commercial boats. It is a broad incumbent that increasingly integrates heading/compass functions into multifunction displays, putting competitive pressure on standalone compass players like Cassens & Plath.
• Raytheon Anschütz: Raytheon Anschütz (formerly C. Plath, the historic namesake of Cassens & Plath) is a German manufacturer of integrated bridge navigation systems, gyrocompasses, and radar for commercial shipping and naval customers. It shares German maritime navigation heritage and competes in commercial ship heading/navigation systems where Cassens & Plath's electronic course equipment is also positioned.

Emerging players

• Navionics (Garmin): Navionics, now part of Garmin, provides electronic navigational charts and integrated navigation solutions. It represents the digital navigation paradigm that displaces reliance on traditional compasses and sextants, making it an adjacent competitor whose adoption pace constrains Cassens & Plath's addressable market growth.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/cassensplath
• Instagraminstagram.com/cassensplath

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Cassens & Plath