Tebul oy
Tebul Oy is a Finnish manufacturer of self-tightening watertight bulkhead sliding doors for maritime vessels, serving cruise lines, yacht builders, ferry operators, ice breakers, research vessels, and offshore operators worldwide through direct B2B sales to shipbuilders and ship operators.
- Company typePrivate
- Founded1942
- HeadquartersLieto, Finland
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Tebul oy does
Tebul Oy is a Finnish industrial manufacturer, founded in 1942 and headquartered in Lieto, Finland, that designs and produces self-tightening watertight bulkhead sliding doors for maritime vessels. Originally established for the production of hydraulic machinery and equipment for shipbuilding, the company delivered its first ship steering gear in 1952 and began manufacturing watertight bulkhead doors in 1961, which have since become its core product. The company serves a global maritime customer base including cruise liners, luxury yachts, passenger car ferries, ice breakers, research vessels, and offshore vessels, with over 5,000 doors delivered over its history.
Its core product line comprises three door models — SLIM (a lightweight all-purpose door with 340mm module thickness), Mini (a compact door for yachts optimized for limited deck heights, rated for waterheads up to 8 meters), and Standard (a heavy-duty door with 500mm module thickness engineered for higher waterheads on passenger vessels). The fourth-generation product relies on a self-tightening mechanism using metal-to-metal contact with rubber seals, whereby higher water pressure increases the sealing force, combined with a 24 VDC fully electric transmission mechanism that eliminates hydraulic pipe work and re-tightening. Products are certified for installation in A-60 fire-rated bulkheads, comply with the latest SOLAS regulations, and are available in an Eex-version for explosion-hazardous areas. Manufacturing takes place in a solar-powered facility supplying 100% CO₂-free electricity.
The business model is one-time hardware sales of door units (blade, frames, electric transmission mechanism, control device, and cables) specified during newbuild or retrofit projects, supplemented by an aftermarket stream of service, maintenance, and spare parts for all Tebul-type doors. Go-to-market is direct B2B enterprise field sales to shipbuilders and ship operators globally, handled by executive and technical personnel (CEO, VP Sales & Operations, Service Engineer, Aftersales Coordinator) with quote-based pricing and no public e-commerce or self-serve channels. The company operates as part of the Lagercrantz Group, having merged with Wärtsilä in 1964, regained independence in 1988 following the reorganization of Wärtsilä Marine, and established its present structure in 1992.
Tebul oy firmographics
Firmographics- Name
- Tebul oy
- Legal name
- Tebul Oy
- Website
- https://tebul.fi
- Company type
- Private
- Founded year
- 1942
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Tebul Oy is a Finnish manufacturer of self-tightening watertight bulkhead sliding doors for maritime vessels, serving cruise lines, yacht builders, ferry operators, ice breakers, research vessels, and offshore operators worldwide through direct B2B sales to shipbuilders and ship operators.
- Ownership category
- akta.pro rank
Tebul oy industry classification
Industry- Product category
- Marine Safety Equipment
- NAICS
- Ship Building and Repairing (336611)
- SIC
- Ship & Boat Building & Repairing (3730)
- akta.pro primary industry
- Ship Access & Working-at-Height Systems (Gangways, Ladders, Platforms, Railings) (IMAJAIAL)
- akta.pro secondary industry
- Hatch Covers, Ramps & Ro-Ro Access Systems (IMAJAIAC)
Keywords
Where Tebul oy is headquartered
LocationHeadquarters
- HQ city
- Lieto
- HQ country
- Finland
- HQ region
- Europe
Offices1 record
Markets served
Tebul oy business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Infrastructure, Technology or R&D
Revenue model
- Watertight Bulkhead Door Sales: One-time hardware sales of watertight bulkhead sliding door systems to shipbuilders and ship operators. Door units include blade, frames, electric transmission mechanism, control device, and cables. Revenue from newbuild specifications and aftermarket replacement/retrofit projects.
- Service and Spare Parts: Aftermarket service, maintenance, and spare parts supply for all Tebul type doors. Dedicated Service & Electrical Engineer and Aftersales Coordinator provide ongoing support.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels2 records
Tebul oy product offering
Product offeringCore offering
Tebul Oy designs and manufactures self-tightening watertight bulkhead sliding doors for maritime vessels. The fourth-generation door system features fully electric (24 VDC) transmission, metal-to-metal contact sealing with rubber seals, and is approved for A-60 fire-rated bulkheads and explosion hazardous areas (Eex-version). The product line includes three models — SLIM (340mm thickness, all-purpose), Mini (compact for yachts), and Standard (heavy-duty for passenger vessels) — sold directly to shipbuilders and ship operators for newbuild and retrofit projects.
Product overview
Tebul Oy manufactures a product line of self-tightening watertight bulkhead sliding doors for maritime vessels. The product portfolio consists of three door models: SLIM (a lightweight and robust all-purpose door with 340mm thickness), Mini (a compact door for yachts with minimal height requirements), and Standard (a heavy-duty door for passenger vessels designed for higher waterheads). All doors feature fully electric transmission mechanisms, metal-to-metal self-tightening with rubber seals, and are approved for A-60 bulkheads and explosion hazardous areas (Eex-version).
Differentiator
Problem solved
Functional benefit
Products and services
- SLIM Watertight Bulkhead Sliding Door SLIM is a lightweight and robust all-purpose watertight bulkhead sliding door with 340mm module thickness and free opening plus 310mm total module height. Suitable for installation in all types of ships including A-60 bulkheads. Combines compact design with the self-tightening fully electric mechanism.
- Mini Watertight Bulkhead Sliding Door Mini is a compact watertight bulkhead sliding door with total module height of free opening plus only 160mm. Features lightweight structure designed for waterheads up to 8 meters, with optional service side. Specifically designed for yacht applications where deck height is limited.
- Standard Watertight Bulkhead Sliding Door Standard is a heavy-duty watertight bulkhead sliding door with 500mm module thickness and free opening plus 310mm total module height. Engineered to withstand higher waterheads and specifically designed for passenger vessels such as ferries and cruise ships.
- Tebul Service and Spare Parts Aftermarket service, maintenance, and spare parts supply for all Tebul watertight bulkhead sliding door units. Provided by a dedicated Service & Electrical Engineer and Aftersales Coordinator, supporting the installed base of over 5000 doors delivered since 1961.
Quantifiable outcome
- Over 5000 watertight bulkhead sliding doors delivered
- +3 more outcomes
Companies that use Tebul oy
Customer profileNamed customers6 records
Segments7 records
Ideal customer profiles4 records
Tebul oy technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Tebul oy partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights3 records
Tebul oy competitors and assessment
Company assessmentBroad incumbents
- Wärtsilä: Finnish marine technology major and Tebul's former parent (1964–1988). Wärtsilä offers ship power, propulsion, and integrated solutions to global shipyards; while not specializing in watertight doors, it remains a strategic comparable given shared Finnish marine heritage and overlapping customer base.
- MacGregor: Part of Cargotec, MacGregor is a global marine equipment incumbent supplying hatch covers, doors, and cargo access systems to commercial shipyards worldwide. Overlaps with Tebul in marine access/door equipment but at much broader portfolio scale across cargo, offshore, and naval markets.
- Brunvoll: Norwegian marine equipment manufacturer specializing in propulsion, maneuvering, and deck machinery for offshore, fishing, and naval vessels. Comparable to Tebul as a Nordic specialty marine equipment supplier serving demanding vessel segments with engineering-intensive products.
- Kongsberg Maritime: Global supplier of marine systems including automation, safety, and vessel integration solutions to commercial and naval shipbuilders. Comparable to Tebul as a broad marine safety and systems incumbent serving the same shipyard customers with overlapping safety-related scope.
Emerging players
- TTS Group: Norwegian supplier of marine equipment including cargo access and handling systems to shipyards and offshore operators. Now part of Cargotec/MacGregor, TTS overlaps with Tebul on shipboard access and handling equipment but from a cargo-system rather than safety-door angle.
Direct peers
- MML Marine: UK-based specialist manufacturer of marine watertight doors and weathertight doors for commercial vessels, naval ships, and offshore platforms. Directly comparable to Tebul in product category, customer base (shipbuilders, navies, offshore), and regulatory-driven specification model.
Others
- SINWA: Singapore-based marine equipment distributor and supplier serving shipyards across Asia-Pacific. Comparable to Tebul as a marine equipment channel partner, though SINWA operates as a distributor rather than a manufacturer of watertight doors.
Regional players
- Adria Winches: Croatian manufacturer of marine deck machinery, winches, and related equipment serving Mediterranean and Adriatic shipyards. Comparable to Tebul as a regional specialty marine equipment maker competing on niche engineering rather than global scale.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Tebul oy social profiles
Digital presenceTebul oy compliance and trust
Trust signalCompliance3 records
Tebul oy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Tebul oy leadership team
Management profileNumber of profiles
Profiles6 records
Tebul oy funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Tebul oy 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 Tebul oy
What does Tebul oy do?
Tebul Oy designs and manufactures self-tightening watertight bulkhead sliding doors for maritime vessels. The fourth-generation door system features fully electric (24 VDC) transmission, metal-to-metal contact sealing with rubber seals, and is approved for A-60 fire-rated bulkheads and explosion hazardous areas (Eex-version). The product line includes three models — SLIM (340mm thickness, all-purpose), Mini (compact for yachts), and Standard (heavy-duty for passenger vessels) — sold directly to shipbuilders and ship operators for newbuild and retrofit projects.
Is Tebul oy a public or private company?
Tebul oy is a private company. It is classified as corporate owned and is currently operating.
When was Tebul oy founded?
Tebul oy was founded in 1942. It employs 1 to 10 people.
Where is Tebul oy based?
Tebul oy is headquartered in Lieto, Finland, in the Europe region.
How does Tebul oy make money?
Two revenue lines are on record. Watertight Bulkhead Door Sales are the primary driver. The others are service and Spare Parts.
Who are Tebul oy's main competitors?
Broad incumbents on record are Wärtsilä, MacGregor, Brunvoll and Kongsberg Maritime. TTS Group is listed as an emerging player. MML Marine is listed as a direct peer. SINWA is listed as an others. Adria Winches is listed as a regional player.
Does Tebul oy have an API?
No public API is recorded for Tebul oy.
What industry is Tebul oy in?
Tebul oy's product category is Marine Safety Equipment. Its primary akta.pro industry code is IMAJAIAL, Ship Access & Working-at-Height Systems (Gangways, Ladders, Platforms, Railings), with a secondary code of IMAJAIAC, Hatch Covers, Ramps & Ro-Ro Access Systems. Its NAICS code is 336611 and its SIC code is 3730.