API Marine
API Marine is a privately held Danish designer and manufacturer of patented acoustic tank measurement sensors, integrated marine automation systems, and digital/cyber solutions, serving global shipyards and shipowners across tanker, gas carrier, container, PCTC, fishing, and offshore vessel segments.
- Company typePrivate
- Founded2004
- HeadquartersAalborg, Denmark
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What API Marine does
API Marine ApS is a privately held Danish company founded in 2004 and headquartered in Aalborg, Denmark, that designs and manufactures integrated automation systems, sensors, and digital solutions for marine and industrial applications. Its core technology is built on a globally patented acoustic sensing platform (the company name stands for Acoustic Precise Instruments) that enables tank level, pressure, and temperature measurement with no electronics or moving parts inside the tank, complemented more recently by 80GHz non-contact radar (TGD-R97). The product portfolio spans sensor families (UTS, TGD, UPT, UTT, TLA), integrated automation systems (VRCS valve remote control with hydraulic, electric, and pneumatic actuators; BMS4 ballast measurement; TLGS tank level gauging; Anti Heeling), software (MasterLoad loading computer), digital solutions (Trident Cyber Security compliant with IACS UR E26, Central Monitoring, Trident Smart System, Alarm and Crew Behavior Monitoring), and, through the MT Power alliance entered in 2025, power generation including Gensets and hybrid/electric propulsion.
The company sells primarily into shipyards and shipowners across all major vessel segments — oil and product tankers, chemical tankers, gas carriers, container ships, PCTCs, fishing vessels, DSVs, and offshore — and reports more than 650 newbuild contracts and approximately 150,000 sensors delivered globally since inception, with named customers including Sovcomflot, Lauritzen Kosan, Siem Car Carriers, Tersan Shipyard, and Jana Marine. Revenue is generated through project-based hardware sales of shipsets plus engineering, commissioning, and after-sales service; pricing is not publicly disclosed and is quote-driven per vessel configuration. API Marine holds a comprehensive regulatory certification portfolio (ISO 9001:2018, ATEX/IECEx, DNV Type Approval, IMO, US Coast Guard, IACS UR E26) and distributes through a global channel partner network covering 20+ countries across Europe, Asia, the Middle East, Africa, and South America, supplemented by a wholly-owned regional subsidiary in Türkiye (established 2025) and a separate industrial-focused subsidiary, API Industry ApS (established 2012). The company remains founder/management-owned with no disclosed external funding.
API Marine firmographics
Firmographics- Name
- API Marine
- Legal name
- API Marine ApS
- Website
- https://api-marine.dk
- Company type
- Private
- Founded year
- 2004
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- API Marine is a privately held Danish designer and manufacturer of patented acoustic tank measurement sensors, integrated marine automation systems, and digital/cyber solutions, serving global shipyards and shipowners across tanker, gas carrier, container, PCTC, fishing, and offshore vessel segments.
- Ownership category
- akta.pro rank
API Marine industry classification
Industry- Product category
- Marine Automation Systems
- NAICS
- Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Marine Sensors, Instrumentation & IoT (Condition Monitoring) (IMAJAJAI)
- akta.pro secondary industries
- Automation, Controls & Instrumentation Engineering (IAS, PMS, Control Logic) (IMAJAGAG), Marine Safety, Alarm & Monitoring Systems (Fire/Gas, IAS, PA/GA) (IMAJAJAG), Marine Electrical Installation, Commissioning & Field Services (IMAJAJAL), Marine Systems Engineering (Piping, HVAC, Fuel, Ballast, Firefighting) (IMAJAGAD)
Keywords
Where API Marine is headquartered
LocationHeadquarters
- HQ city
- Aalborg
- HQ country
- Denmark
- HQ region
- Europe
Offices2 records
Markets served
API Marine business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Marine Sensors and Systems Sales: Direct sales of proprietary sensors (UTS ultrasonic tank switches, TGD tank gauging devices, pressure transmitters, temperature transmitters) and integrated automation systems to shipyards and shipowners for newbuild vessels and retrofits.
- Integrated Automation Solutions: Complete tank management, cargo control, valve remote control, ballast measurement, and monitoring systems sold as integrated packages. Includes software components for stability and loading calculations.
- Power Generation Solutions: Propulsion systems including Gensets, Diesel Electric Propulsion, Hybrid Propulsion, and Electric Propulsion solutions for marine vessels.
- Service and Support: Technical service, maintenance, commissioning, and after-sales support for installed systems through global service network.
Go-to-market motion2 records
Distribution channels2 records
Marketing channels4 records
API Marine product offering
Product offeringCore offering
API Marine designs and manufactures integrated automation systems and high-precision sensors for tank measurement, cargo control, valve remote operation, ballast management, and digital vessel monitoring. The company supplies marine-grade hardware (acoustic, pressure, temperature, and radar sensors), complete automation packages, power generation solutions, and digital/cyber security systems primarily to shipyards and shipowners for newbuilds and retrofits. Its offerings are backed by proprietary patented acoustic technology and certified for IMO, US Coast Guard, IACS UR E26, and major Classification Society requirements.
Product overview
API Marine is a designer and manufacturer of integrated automation systems, sensors, and digital solutions for marine and industrial applications. The product portfolio spans three main categories: Tank & Automation Solutions (including UTS, TGD, TGD-R97 Radar sensors; VRCS Valve & Remote Control System with hydraulic/electric/pneumatic actuators and components; BMS4 Ballast Measurement System; TLGS Tank Level Gauging System; Anti Heeling System; and Portable Sounding Device), Power Generation Solutions (Gensets, Diesel Electric, Hybrid, and Electric Propulsion systems powered by MT Power), and Digital Solutions (Trident Cyber Security System, Central Monitoring System, Trident Smart System, Alarm Monitoring, and Crew Behavior Monitoring powered by Sango Marine). The company also offers MasterLoad Loading Computer software and comprehensive Service & Support. All products meet IMO and US Coast Guard requirements and are certified according to ISO 9001:2018 with ATEX/IECEx approvals.
Differentiator
Problem solved
Functional benefit
Brands
- API Industry: Industrial applications subsidiary targeting liquid control, tank and pipe installations for industrial production and process automation.
Products and services
- UTS - Ultrasonic Tank Switch Universal level switch designed for controlling level of any liquid or liquefied gas. Based on patented acoustic technology with no moving parts inside tanks. Available in standard, high, and low temperature versions with explosion protection (Exd) option. Targeted at marine tank installations on tankers, gas carriers, and other vessel types.
- TGD - Tank Gauging Device (including TGD-R97 80GHz Radar) Multi-functional device for measuring level, pressure, and temperature using non-contact acoustic GLF (Guided Low Frequency) self-calibrating methods. Includes the TGD-R97 80GHz Radar variant with measuring range up to 30 meters, built-in display, and easy installation without tank access. Engineered for chemical and product oil cargo tanks.
- UPT - Universal Pressure Transmitter Pressure transmitter for measuring pressure in tanks and piping systems in marine environments. For shipowners, shipyards, and industrial process installations.
- UTT - Universal Temperature Transmitter Temperature transmitter for measuring temperature in tanks and process systems on vessels and industrial installations.
- TLA - Tank Level Alarm High level and overfill alarm system for tanks ensuring compliance with maritime safety regulations.
Quantifiable outcome
- Near 150,000 sensors delivered globally since 2004
- +2 more outcomes
Companies that use API Marine
Customer profileNamed customers8 records
Segments4 records
Ideal customer profiles3 records
API Marine technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
API Marine partnerships and signals
Strategic signalPartnerships
Eleven partnerships are on record, tiered key, core and regional.
- MT Power (MT POWER SHIPBUILDING TECHNOLOGY CO., LTD)keyJoint presence at Marintec China 2025 forming strong alliance. MT Power is a partner for power generation solutions and together with Turrido and Sango Marine forming alliance for maritime industry exhibitions and solutions.
- API Marine Türkiye Ltd. (Eker Engineering)coreStrategic establishment of API Marine Türkiye Ltd. in Tuzla, Istanbul with General Manager Erkan Eker (Marine Engineer & Naval Architecture MSc.) and team. Eker Engineering had been longstanding partner providing technical support, sales and service covering shipbuilding and ship repair centre of Tuzla and Yalova.
- ETV (El-talvuvirkid i Gøtu)regionalDistribution partnership for Faroe Island and North Atlantic High Sea Fishing Markets. Located in Nordragøta, Faroe Islands. With 35+ years experience, serves growing fleet of High Sea and High-Tech Fishing vessels.
- B.V. Technisch Bureau UittenbogaartcorePartner Agreement for key marine industry areas in Holland and Belgium. Founded in 1927, located in Ridderkerk near Rotterdam port. Provides service and support with qualified staff for on-site work at shipyards.
- Marine Control Services (MCS)regionalNorwegian partner for delivery of BMS4/AutoGauge V1 for High Sea Factory Fishing Vessels at Karstensens Shipyard in Denmark. Provides Evolution V5 integrated automation system with API Marine level measurement.
- ElkonkeyOne of largest companies in Europe within Marine Automation System area. Established 1980 for design, manufacture, integrate and commission low voltage electrical equipment and automation systems. Operations covering whole of Europe with worldwide service stations.
- Marine & Industrial Systems Ltd. (MIS)corePartner Agreement primarily for Greece, Romania, and Cyprus. Located in Piraeus, Greece. Supplies equipment and technical support to shipping industry and represents complementary product lines including Wärtsilä systems.
- Sango MarinekeyPowered by Sango Marine for digital solutions including Trident Digital System, Trident Smart System, and Central Monitoring System. Strategic partnership for maritime digitalization solutions.
- UTER Technologies LimitedcoreChina-based partner handling installation and commissioning of API Marine systems. Located at Xiang'an Road (North), Xiamen, China. Successfully commissioned systems for vessels at Chinese shipyards.
- MESON Valves India Private LimitedregionalIndia-based partner located in Maharashtra. Successfully completed commissioning of full Cargo Control, Alarm and Valves Control System for bunker tanker for Lakshadweep UTLA at VIJAI Shipyard in Goa.
- Gloryholder Liquefied Gas Machinery (DL) Co., LtdkeySpecialized company in engineering, design and EPC turn-key deliveries of marine LNG fuel gas supply systems and cargo handling systems for gas carriers and LNG bunkering ships. Integrated with API Marine LNG Fuel Tank Solution for Siem PCTC vessels.
Scale indicators5 records
Recent moves8 records
Expansion highlights6 records
API Marine competitors and assessment
Company assessmentBroad incumbents
- Emerson (Rosemount Tank Gauging): Major process-instrumentation firm whose radar tank gauging and level products compete with API Marine's TGD-R radar sensors, but within a broad industrial automation business.
- Wärtsilä: Global marine power and automation company providing tank/cargo control, propulsion and monitoring systems that compete across API Marine's automation and power generation offerings.
- Kongsberg Maritime: Large Norwegian marine automation and monitoring supplier offering integrated ship control, cargo and monitoring systems that overlap API Marine's automation and digital solutions.
- Honeywell Enraf: Global provider of tank gauging and level measurement instrumentation across marine and industrial applications, overlapping API Marine's measurement niche as part of a much larger portfolio.
Direct peers
- Scanjet: Swedish supplier of marine tank management, level gauging and monitoring systems for tankers and gas carriers, competing directly in the same vessel systems and customer base.
- Musasino Co. Japanese manufacturer of marine tank gauging and level measurement systems for cargo, ballast and fuel tanks — directly overlapping API Marine's core tank measurement product line.
- Damcos (Danfoss IXA / marine): Provider of marine valve remote control and tank level systems for cargo and ballast operations, directly comparable to API Marine's VRCS and level gauging products.
- VAF Instruments: Dutch maker of marine measurement instrumentation and monitoring systems for vessels, comparable in product category and shipowner/shipyard customer base.
- Praxis Automation Technology: Netherlands-based marine integrated automation and alarm/monitoring systems provider serving shipyards and shipowners, overlapping API Marine's IAS and monitoring solutions.
Emerging players
- Autronica Fire and Security: Supplier of marine alarm, monitoring and safety detection systems for vessels, overlapping API Marine's alarm and monitoring solution segment.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
API Marine social profiles
Digital presenceAPI Marine compliance and trust
Trust signalCompliance8 records
API Marine financial estimates
Financial estimateRevenue estimate
Valuation estimate
API Marine leadership team
Management profileNumber of profiles
Profiles4 records
API Marine subsidiaries and ownership
Company hierarchySubsidiaries1 record
API Marine funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
API Marine 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 API Marine
What does API Marine do?
API Marine designs and manufactures integrated automation systems and high-precision sensors for tank measurement, cargo control, valve remote operation, ballast management, and digital vessel monitoring. The company supplies marine-grade hardware (acoustic, pressure, temperature, and radar sensors), complete automation packages, power generation solutions, and digital/cyber security systems primarily to shipyards and shipowners for newbuilds and retrofits. Its offerings are backed by proprietary patented acoustic technology and certified for IMO, US Coast Guard, IACS UR E26, and major Classification Society requirements.
Is API Marine a public or private company?
API Marine is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was API Marine founded?
API Marine was founded in 2004. It employs 11 to 50 people.
Where is API Marine based?
API Marine is headquartered in Aalborg, Denmark, in the Europe region.
How does API Marine make money?
Four revenue lines are on record. Marine Sensors and Systems Sales are the primary driver. The others are integrated Automation Solutions, power Generation Solutions and service and Support.
Who are API Marine's main competitors?
Broad incumbents on record are Emerson (Rosemount Tank Gauging), Wärtsilä, Kongsberg Maritime and Honeywell Enraf. Direct peers are Scanjet, Musasino Co., Damcos (Danfoss IXA / marine), VAF Instruments and Praxis Automation Technology. Autronica Fire and Security is listed as an emerging player.
Does API Marine have an API?
No public API is recorded for API Marine.
What industry is API Marine in?
API Marine's product category is Marine Automation Systems. Its primary akta.pro industry code is IMAJAJAI, Marine Sensors, Instrumentation & IoT (Condition Monitoring), with a secondary code of IMAJAGAG, Automation, Controls & Instrumentation Engineering (IAS, PMS, Control Logic). Its NAICS code is 33451 and its SIC code is 3823.