BUKH

What BUKH does

BUKH A/S is a Danish manufacturer of marine diesel engines headquartered in Krusaa, Denmark, with origins tracing to 1899. The company designs, marinizes, and distributes a specialized product portfolio covering 24 HP to 700 HP across three core lines: SOLAS-approved lifeboat engines (DV/RME and EPA series, 24-48 HP), high-speed craft engines (R175, R210, S270, and the GM Duramax-based V8P series from 300-530 HP), and heavy-duty SOLAS commercial engines (G7, H10, and L13 series, 238-700 HP). Underlying technology combines pre-combustion chamber injection for low-end reliability, Compacted Graphite Iron (CGI) cylinder blocks, Electronic Unit Injection (EUI) for heavy-duty series, Piezo-controlled common rail direct injection for the S-series, Electronic Variable Geometry Turbocharging (E-VGT), and DENSO HP4 fuel systems on the V8P platform. BUKH also markets engines sourced through partnerships with Steyr Motors, SeasAll (Doosan Infracore), Alamarin Oy, and Hyundai, and continues to support the legacy Callesen Diesel brand (produced 1899-1999) through spare parts and service.

BUKH serves three primary end markets: lifeboat and rescue boat manufacturers/operators requiring SOLAS, USCG, DNV, and RMRS type approvals; fast rescue boat and high-speed commercial craft operators in the 175-530 HP range; and heavy-duty commercial marine operators needing 238-700 HP SOLAS engines with EPA Tier III / IMO Tier II / RCD II emissions compliance. The company holds a broad international certification stack — multiple DNV MED B certificates, USCG acceptance, RMRS type approval, CCS certification, and -40°C operating certification — which functions as the primary regulatory moat for safety-critical maritime deployment.

BUKH operates an exclusively indirect go-to-market model: all sales flow through a global authorized dealer and distributor network spanning Europe, North America, South America, Africa, Asia, and Oceania, with a website-based dealer locator directing buyers to local representatives. Revenue is generated primarily through new marine diesel engine sales (hardware), supplemented by genuine spare parts for both current BUKH and legacy Callesen engines, and service/repair through a network of more than 70 qualified technicians in Denmark and internationally. Pricing is uniformly quote-based (no public list prices), consistent with project-based commercial marine sales, and the company is privately held with no disclosed parent, institutional investors, or capital raises.

Name

BUKH

Legal name

BUKH A/S

Website

https://bukh.dk

Company type

Private

Founded year

1899

Operating status

Operating

Headcount range

11–50 employees

Short description

BUKH A/S is a Danish manufacturer of marine diesel engines (24-700 HP) for SOLAS-certified lifeboats, fast rescue boats, and heavy-duty commercial vessels, distributed globally through authorized dealers. Founded 1899, the company holds multiple international type approvals.

Ownership category

akta.pro rank

Product category

Marine Diesel Engines

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (3336)

SIC

Engines & Turbines (3510)

akta.pro primary industry

Marine Diesel & Dual-Fuel Engines (IMAJAHAA)

akta.pro secondary industries

Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades) (IMAJAHAN), Life-Saving Appliances & Safety Equipment (Davit Systems, Lifeboats, Firefighting) (IMAJAIAG), Propulsion, Power & Energy Systems Design (Diesel, Hybrid, Electric, Alternative Fuels) (IMAJAGAE)

Keywords

• Marine diesel engines
• SOLAS lifeboat engines
• Heavy-duty marine engines
• Fast rescue boat engines
• Commercial marine propulsion

Headquarters

HQ city

Krusaa

HQ country

Denmark

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. New marine diesel engine sales: BUKH generates primary revenue from the sale of new SOLAS-approved marine diesel engines across three power categories: 24-48 HP lifeboat engines, 175-530 HP high-speed craft engines, and 238-700 HP heavy-duty SOLAS engines. Engines are sold exclusively through authorized global dealers.
2. Spare parts for BUKH and legacy Callesen engines: BUKH maintains a large inventory of genuine spare parts for all BUKH engine models as well as legacy Callesen diesel motors (models 425 and 427). Spare parts are ordered through dealers or directly via the BUKH website.
3. Service and repair: BUKH provides repair and service on Callesen marinemotors and related gear/clutch systems through a network of more than 70 qualified technicians in Denmark and internationally.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

BUKH designs and manufactures SOLAS-approved marine diesel engines for lifeboats, fast rescue boats, and commercial vessels. The product range covers three power categories: 24-48 HP lifeboat engines (DV RME and EPA series), 175-530 HP high-speed craft engines (R, S, and V8P series), and 238-700 HP heavy-duty SOLAS engines (G7, H10, and L13 series). Engines are sold exclusively through a global authorized dealer network, with genuine spare parts and service for BUKH and legacy Callesen engine brands.

Product overview

BUKH A/S is a Danish manufacturer with over 100 years of experience producing marine diesel engines for lifeboats, fast rescue boats, and commercial work boats. The company operates three core product lines: BUKH 24-48HP LIFEBOATS (RME and EPA series engines from 24-48 HP for SOLAS-approved lifeboats), BUKH 175-530HP HIGH SPEED CRAFT (R175, R210, S270, and V8P series engines from 175-530 HP for fast rescue and commercial boats), and BUKH 238-700HP HEAVY DUTY SOLAS (G7, H10, and L13 series engines from 238-700 HP for heavy commercial marine applications). The product portfolio also includes the SeasAll sub-brand (S250 and D170 engines) and legacy Callesen Diesel brand support (spare parts and service for engines built 1899-1999). BUKH also partners with global suppliers including Steyr Motors, Alamarin Oy, and Hyundai for extended power range coverage.

Differentiator

Problem solved

Functional benefit

Brands

• Callesen Diesel: Callesen Diesel product line for marinemotorer, gear/kobling, and propelleranlæg. Callesen motors were produced from 1899 to 1999 in the 180 HK - 1350 HK range. BUKH continues to provide spare parts and service for Callesen diesel motors.
• BUKH SeasAll

Products and services

• BUKH DV24 RME 24 HP lifeboat diesel engine with keel-cooling, 2-cylinder 964 cm3 displacement, designed for SOLAS-approved lifeboat applications with multiple starting system options.
• BUKH DV29 RME 29 HP lifeboat diesel engine with keel-cooling, 2-cylinder configuration, designed for SOLAS-approved lifeboat applications with multiple starting system options.
• BUKH DV32 RME 32 HP lifeboat diesel engine with keel-cooling, 2-cylinder 964 cm3 displacement, designed for SOLAS-approved lifeboat applications with decompression lever and multiple starting options.
• BUKH DV36 RME 36 HP lifeboat diesel engine with keel-cooling, 3-cylinder 1447 cm3 displacement, naturally aspirated, designed for SOLAS-approved lifeboat applications.
• BUKH DV48 RME 48 HP turbocharged lifeboat diesel engine with keel-cooling, 3-cylinder 1447 cm3 displacement, SOLAS-approved with 6 different starting systems available.
• BUKH EPA28 28 HP EPA-compliant lifeboat diesel engine using pre-combustion chamber injection technology for low exhaust emissions, 3-cylinder 1123 cm3 displacement, US Coast Guard approved.
• BUKH EPA36 36 HP EPA-compliant lifeboat diesel engine using pre-combustion chamber injection technology for reduced emissions, 1498 cm3 displacement, US Coast Guard approved with 4 SOLAS-approved starting systems.
• BUKH EPA48 48 HP EPA-compliant lifeboat diesel engine using pre-combustion chamber injection for low emissions, 2197 cm3 displacement, US Coast Guard approved with multiple starting configurations.
• BUKH R175 175 HP SOLAS marine engine with Common Rail Direct Injection (CRDi), 2.2L inline-4 engine, 2200 cm3 displacement, suitable for fast rescue boats and commercial applications.
• BUKH R210 210 HP SOLAS marine engine with Common Rail Direct Injection, 2.2L inline-4 16-valve DOHC engine, 2200 cm3 displacement, NMEA2000 compatible for marine data communication.
• BUKH S270 270 HP high-speed craft engine with Piezo-controlled Common Rail Direct Injection, 3.0L V6 4-valve DOHC engine, 2959 cm3 displacement, Electric Variable Geometry Turbocharger (E-VGT), EPA Tier 3 compliant.
• BUKH V8P - 300 HP 300 HP (221 kW) light weight diesel engine based on Duramax platform, 6.6L displacement, marinized by BUKH in Denmark, suitable for commercial and leisure applications, J1939/NMEA2000 compatible.
• BUKH V8P - 350 HP 350 HP (258 kW) light weight diesel engine based on Duramax platform, 6.6L displacement, marinized by BUKH in Denmark, J1939/NMEA2000 compatible for marine applications.
• BUKH V8P - 400 HP 400 HP (294 kW) light weight diesel engine based on Duramax platform, 6.6L displacement, electrically controlled variable geometry turbo, J1939/NMEA2000 compatible.
• BUKH V8P - 450 HP 450 HP (331 kW) light weight diesel engine based on Duramax platform, 6.6L displacement, electrically controlled variable geometry turbo, J1939/NMEA2000 compatible.
• BUKH V8P - 500 HP 500 HP (368 kW) light weight diesel engine based on Duramax platform, 6.6L displacement, electrically controlled variable geometry turbo, J1939/NMEA2000 compatible.
• BUKH V8P - 530 HP 530 HP (391 kW) top-of-range light weight diesel engine based on Duramax platform, 6.6L displacement, DENSO HP4 high pressure injection pump with common rail system, J1939/NMEA2000 compatible.
• BUKH G300 HP 300 HP (221 kW) 6.8L commercial heavy duty engine, G7 Series with Common Rail Direct Injection (CRDI), solenoid injector with 2,000 bar, EPA Tier III/IMO Tier II compliant.
• BUKH G350 HP 350 HP (257 kW) 6.8L commercial heavy duty engine, G7 Series with Common Rail Direct Injection (CRDI), solenoid injector with 2,000 bar, EPA Tier III/IMO Tier II compliant.
• BUKH H238 HP 238 HP (175 kW) 10L SOLAS marine diesel engine, H10 Series inline-6, Electronic Unit Injector (EUI) system, Compacted Graphite Iron (CGI) cylinder head, Electric Variable Geometry Turbocharger (E-VGT).
• BUKH H310 HP 310 HP (228 kW) 10L SOLAS marine diesel engine, H10 Series inline-6, Electronic Unit Injector (EUI) system, Compacted Graphite Iron (CGI) cylinder head, Electric Variable Geometry Turbocharger (E-VGT).
• BUKH H345 HP 345 HP (253.8 kW) 10L SOLAS marine diesel engine, H10 Series inline-6, Electronic Unit Injector (EUI) system, Compacted Graphite Iron (CGI) cylinder head, Electric Variable Geometry Turbocharger (E-VGT).
• BUKH H380 HP 380 HP (280 kW) 10L SOLAS marine diesel engine, H10 Series inline-6, Electronic Unit Injector (EUI) system, Compacted Graphite Iron (CGI) cylinder head, Electric Variable Geometry Turbocharger (E-VGT).
• BUKH H410 HP 410 HP (302 kW) 10L SOLAS marine diesel engine, H10 Series inline-6, Electronic Unit Injector (EUI) system, Compacted Graphite Iron (CGI) cylinder head for lighter and quieter operation, Electric Variable Geometry Turbocharger (E-VGT).
• BUKH L500 HP 500 HP (368 kW) 12.7L heavy duty commercial engine, L13 Series inline-6, Electronic Unit Injector (EUI) system, EPA Tier III/IMO Tier II compliant SOLAS engine.
• BUKH L600 HP 600 HP (441 kW) 12.7L heavy duty commercial engine, L13 Series inline-6, Electronic Unit Injector (EUI) system, EPA Tier III/IMO Tier II compliant SOLAS engine.
• BUKH L700 HP 700 HP (515 kW) 12.7L heavy duty commercial engine, L13 Series inline-6, Electronic Unit Injector (EUI) system, Waste Gate Turbocharger (WGT), EPA Tier III/IMO Tier II compliant SOLAS engine.
• BUKH SeasAll S250 250 PS (184 kW) SOLAS marine engine with Piezo-controlled Common Rail Direct Injection (CRDI), 3.0L V6 engine, Compacted Graphite Iron (CGI) cylinder block, Electric Variable Geometry Turbocharger (E-VGT), EPA Tier 2/IMO/RCD compliant.
• BUKH SeasAll D170 170 PS (125 kW) SOLAS marine engine with Solenoid Common Rail Direct Injection (CRDi), 2.2L inline-4 engine, Variable Geometry Turbocharger (VGT), EPA Tier 2 compliant for pleasure and light commercial marine applications.
• Callesen Diesel (legacy brand spare parts and service) Legacy marine diesel brand (Callesen 425 and 427 engines, 180-1350 HP range, produced 1899-1999) for coasters, fishing boats, and icebreakers. BUKH maintains a large inventory of original spare parts and offers repair services through a network of more than 70 certified technicians in Denmark and internationally.

Quantifiable outcome

• Pre-combustion chamber injection technology enabled US Coast Guard approval for lifeboat engine use
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature7 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Steyr MotorscoreTechnology or IntegrationBUKH has an established partnership with Austrian company Steyr Motors for certain marine engine products. BUKH previously sold and services Steyr-derived MO and SE series engines. This represents a key product line partnership spanning multiple engine models.
• SeasAll (Doosan Infracore subsidiary)coreTechnology or IntegrationBUKH markets engines sourced from SeasAll (a Doosan Infracore company) under the BUKH brand. The SeasAll-based product line includes D170, S250, S270, R175, R210 models. These engines feature Piezo or solenoid-controlled common rail injection technology and CGI cylinder blocks. CCS and DNV type approvals are held for SeasAll models.
• Clouds InternationalminorChannel Partner/ Reseller/ DistributorClouds International is listed as the BUKH distributor for Europort Rotterdam 2025 trade show, representing BUKH at the exhibition.
• Service partner network (Callesen)minorImplementation/ SI/ Consulting PartnerBUKH has a strong service partnership providing repair and service on Callesen marinemotors. More than 70 qualified technicians provide all forms of repairs and service on Callesen marine engines in Denmark and internationally at short notice.
• DNV (Det Norske Veritas)coreTechnology or IntegrationDNV is BUKH's primary classification society and certification partner, providing type approval, MED certification, quality system assessment, and environmental operating temperature certification for BUKH engines. Multiple DNV certificates are held covering MED B, MED type examinations, QS certificates, and temperature ratings.
• United States Coast Guard (USCG)coreTechnology or IntegrationThe USCG has accepted BUKH engines for use on lifeboats and rescue boats in US maritime waters. This acceptance is a critical requirement for market access in the US and reflects the high reliability standards of BUKH's pre-combustion chamber technology.
• Russian Maritime Register of Shipping (RMRS)coreTechnology or IntegrationRMRS has issued type approval certificates for BUKH DV24, DV29, DV32, DV36, DV48 RME engines, enabling BUKH to serve the Russian maritime market.
• China Classification Society (CCS)coreTechnology or IntegrationCCS has issued type approval certificates for BUKH SeasAll engine series (S270, S250, S220, S150), enabling BUKH to serve the Chinese maritime market.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Cummins Marine: Cummins provides marine diesel engines from recreational to commercial applications, with global service network and certifications across major maritime authorities. Comparable to BUKH in targeting commercial marine diesel markets requiring regulatory compliance and reliability certifications.
• Caterpillar Marine: Caterpillar Marine is a leading global manufacturer of marine diesel engines covering propulsion and auxiliary power needs across commercial marine, offshore, and defense applications. Comparable to BUKH in targeting commercial marine diesel markets, though at substantially greater scale and broader product breadth.
• Volvo Penta: Volvo Penta is one of the world's largest manufacturers of marine engines, offering a broad portfolio of diesel and electric propulsion systems for commercial and leisure marine applications. While serving a much wider market than BUKH, both companies target commercial marine operators with diesel propulsion systems requiring regulatory compliance and reliability certifications.
• MAN Energy Solutions: MAN Energy Solutions is a global leader in large-bore marine diesel engines and turbochargers for ship propulsion, with extensive IMO and classification society certifications. Both MAN and BUKH target SOLAS-certified marine applications, though MAN serves primarily the deep-sea commercial vessel market at higher power tiers.
• MTU/Rolls-Royce Power Systems: MTU (Rolls-Royce Power Systems) manufactures marine diesel and gas engines for yachts, commercial ships, and naval vessels with extensive IMO compliance. Both MTU and BUKH serve commercial marine markets with high-power diesel propulsion requiring certification by major classification societies.

Regional players

• Hyundai Heavy Industries: Hyundai Heavy Industries is a major Korean shipbuilder and engine manufacturer with marine engine offerings. Both Hyundai and BUKH are partners (per BUKH data) and Hyundai operates primarily in the Asian commercial marine market with broader shipbuilding capabilities beyond BUKH's engine-only focus.

Direct peers

• Yanmar Marine: Yanmar is a Japanese manufacturer of marine diesel engines with a strong global presence, producing engines for commercial vessels, fishing boats, and recreational craft. Yanmar competes with BUKH across multiple marine segments including small commercial marine diesel engines with regulatory certifications.
• Beta Marine: Beta Marine is a UK-based specialist manufacturer of marine diesel engines for sailing yachts, motor boats, and small commercial vessels. Beta Marine is a direct comparable peer to BUKH in offering purpose-built marine diesel engines at smaller power tiers with focus on reliability and ease of maintenance.
• Steyr Motors: Steyr Motors is an Austrian manufacturer of specialized marine diesel engines known for compact, high-performance designs. Steyr is both a BUKH partner (MO/SE series) and a direct comparable peer in marine diesel engine manufacturing with similar power range offerings and quality positioning.
• Doosan Infracore (SeasAll): Doosan Infracore through its SeasAll subsidiary supplies marine diesel engines that BUKH markets under the BUKH SeasAll brand. Doosan/SeasAll is both a key BUKH partner and a direct comparable peer in marine diesel engine manufacturing with overlapping power range offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/BUKHengines
• LinkedInlinkedin.com/company/bukh-powering-marine-safty

Compliance26 records

Revenue estimate

Valuation estimate

Number of profiles

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 BUKH