What DAIKO does

DAIKO (第工株式会社) is a privately held Japanese port and logistics services company founded in 1986 (with predecessor operations dating to 1953) and headquartered in Kobe. The firm operates across six business divisions — Ship Operations (cargo lashing, shipboard welding, hold cleaning, ship carpentry), Container Operations (damage inspection, repair, cleaning, washing), Equipment Maintenance (top lifters, yard chassis, transtainers, gantry cranes), Facility Management (logistics warehouse upkeep), Special Operations (heavy equipment dismantling, Kobe Luminarie event installation since 1995), and Real Estate — serving shipping companies, maritime carriers, port terminal operators, and logistics firms at Japan's five major container ports (Tokyo, Yokohama, Nagoya, Osaka, Kobe).

The company's technical capabilities are built around skilled manual labor rather than automated systems: arc and gas welding for container repair and shipboard ring welding; lashing methodologies for coils, cases, and automotive cargo using wire ropes and belts; preventive and corrective maintenance of port machinery; and custom fabrication (including 660m-perimeter movable fences). DAIKO maintains a deep certified workforce (88 gas-welding, 72 arc-welding, 107 forklift, 39 crane, 28 high-platform, plus IICL international container inspection credentials) and serves approximately 180 client companies including Kawasaki Kisen Kaisha (K Line), Ocean Network Express (ONE), JFE Logistics, Nippon Express, and Sankyu.

DAIKO generates revenue on a professional-services and managed-services basis through negotiated B2B contracts with shipping companies, logistics operators, and port terminal operators. Reported revenue was ¥3,394 million (~$23M USD) for fiscal 2021, with the corporate parent Mas Group Holdings overseeing a structure that now includes Green Engineering, Green Light, Water Front Service, and — through 2025–2026 acquisitions — Toyozawa, Cosmos International Logistics Group, and Seiko Sha. Distribution is exclusively direct via the five branch offices with no reseller or third-party channel; the firm employs ~220 people and conducts sales-led recruitment through Rikunabi, Mynavi, and its own careers site to staff both generalist and operations roles.

Name

DAIKO

Legal name

第工株式会社

Website

https://dk-c.co.jp

Company type

Private

Founded year

1986

Operating status

Operating

Short description

DAIKO (第工株式会社) is a Japanese privately held port and logistics services company providing shipboard lashing, container repair, equipment maintenance, facility management, and real estate services across Japan's five major ports to approximately 180 shipping and logistics clients.

Ownership category

akta.pro rank

Product category

Port and Harbor Operations Services

NAICS

Port and Harbor Operations (488310), Support Activities for Water Transportation (4883), Marine Cargo Handling (48832)

SIC

Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Port Equipment Operations (Crane Operators, RTG/RMG, Straddle Carrier Operations) (TLAHALAE)

Keywords

• Port operations services
• Container repair maintenance
• Vessel cargo lashing
• Maritime logistics support
• Port equipment maintenance

Headquarters

HQ city

Kobe

HQ country

Japan

HQ region

Asia

Offices12 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. 港湾荷役作業サービス: DAIKO generates revenue primarily through service fees for port and harbour operations including shipboard lashing, cargo securing, ship carpentry, welding, hold cleaning, container checking, container repair, and water washing. Revenue is derived from shipping companies, logistics operators, and port terminal operators on a service contract basis.
2. 機器メンテナンスサービス: Inspection and repair services for port equipment including top lifters, yard chassis, transtainers, and gantry cranes. Provides recurring maintenance revenue through long-term service relationships with port facility operators.
3. 施設管理サービス: Facility management and maintenance services for logistics warehouses, including comprehensive building maintenance and operations management.
4. 特殊作業 (イベント設営・機器解体): Specialized services including event setup (Kobe Luminaria illumination installation since 1995), transtainer dismantling, and large-scale movable fence fabrication. These are project-based revenue streams.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

DAIKO provides port and harbor operations services across Japan's five major ports through six service divisions: Ship Operations (cargo lashing, ship carpentry, welding, hold cleaning), Container Operations (damage inspection, welding repair, cleaning, washing), Equipment Maintenance (inspection and repair of port machinery such as top lifters, yard chassis, transtainers, and gantry cranes), Facility Management (logistics warehouse upkeep), Special Operations (large equipment dismantling, event setup including Kobe Luminarie since 1995), and Real Estate services. Customers are shipping companies, logistics firms, and port terminal operators served under B2B service contracts.

Product overview

DAIKO (第工株式会社) is a port and logistics service company that operates through six distinct business divisions providing integrated port operations services. The core offerings include: (1) Ship Operations (本船部門) handling cargo lashing, ship carpentry, welding, and hold cleaning; (2) Container Operations (コンテナ部門) for damage inspection, repair, and washing; (3) Equipment Maintenance (機器メンテナンス部門) for port machinery including cranes and lifters; (4) Facility Management (施設管理部門) for warehouse upkeep; (5) Special Operations (その他・特殊作業部門) including equipment dismantling and event installation; and (6) Real Estate (不動産部門). The company leverages specialized skills including welding, equipment operation, and qualified certifications to support Japan's logistics infrastructure across five major ports.

Differentiator

Problem solved

Functional benefit

Products and services

• Ship Operations (本船部門)

Quantifiable outcome

• Handles over 99% of Japan's foreign trade through maritime shipping
• +2 more outcomes

Named customers14 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• 株式会社セイコー社 (Seiko Sha Co., Ltd.)coreStrategic or Co-development Partner · 30 January 2026Seiko Sha Co., Ltd. is engaged in the rental, sale, and repair of construction machinery, as well as chisel re-processing. It became part of DAIKO's group in January 2026, providing synergies with DAIKO's equipment maintenance operations.
• コスモインターナショナルロジックスグループ (Cosmos International Logistics Group)coreStrategic or Co-development Partner · 27 November 2025Cosmo International Logistics Group comprises three companies: Cosmos Trans Line Osaka, Cosmos Trans Line Tokyo, and Cosmos Logistics. They operate forwarding, customs clearance, and container transport businesses in the Kansai region. Became part of DAIKO's group in November 2025.
• 豊澤株式会社 (Toyozawa Co., Ltd.)coreStrategic or Co-development Partner · 31 July 2025Toyozawa Co., Ltd. operates in the forwarding and international logistics business. It became part of DAIKO's corporate group in July 2025, expanding DAIKO's logistics service capabilities in the Tokyo area.
• マス・グループホールディングス株式会社 (Mas Group Holdings Co., Ltd.)coreOthersParent holding company established April 2015 with capital of ¥10 million. Head office located at DAIKO's Kobe HQ. Manages securities investment, holding, and operation of assets for the DAIKO group.
• マス・グループインベストメント株式会社 (Mas Group Investment Co., Ltd.)coreOthersInvestment company within the Mas Group, established April 1953, with capital of ¥120 million. Located at DAIKO's Tokyo office.
• グリーンエンジニアリング株式会社 (Green Engineering Co., Ltd.)coreStrategic or Co-development PartnerMachine maintenance, refrigeration container monitoring, and general maintenance operations. Established March 1972, capital ¥49 million. Tokyo office in Kanda. Provides specialized equipment maintenance services to DAIKO's port operations.
• グリーンライト株式会社 (Green Light Co., Ltd.)coreStrategic or Co-development PartnerLocated at DAIKO's Aomi A-4 facility. Provides maintenance support services within the port terminal operations.
• ウオーターフロントサービス株式会社 (Water Front Service Co., Ltd.)coreStrategic or Co-development PartnerSecurity services company (警備業) established June 1988, capital ¥22 million. Located in Kobe. Provides security services to DAIKO's port facilities.
• マス・ニューハウジングシステム株式会社 (Mas New Housing System Co., Ltd.)minorOthersReal estate management company (不動産管理業) established January 1962, capital ¥20 million. Located in Kobe.
• 株式会社オカムラ (Okamura Corporation)minorOthersOffice furniture manufacturer that designed and provided furniture for DAIKO's Tokyo Head Office, which won the JOIFA Office Award Special Prize in 2024 and was featured on TV Tokyo's 'Cambria Palace.'

Scale indicators7 records

Recent moves13 records

Expansion highlights5 records

Broad incumbents

• Yusen Logistics Co., Ltd. Yusen Logistics is a major Japanese/global forwarding and contract logistics provider with port-adjacent services including cargo handling and warehousing. Comparable to DAIKO as a broader logistics incumbent operating in overlapping Japanese port service categories.
• Nippon Express Holdings: Nippon Express is Japan's largest logistics group, offering freight forwarding, warehousing, and port-related services as part of a comprehensive global logistics portfolio. Comparable to DAIKO's port and warehouse services as a broader incumbent offering overlapping capabilities without specializing in shipboard lashing or port equipment maintenance.
• Kintetsu World Express (now Kintetsu Worldwide Express): Kintetsu World Express is a Japanese/global freight forwarder and logistics company with significant Japan port-related service operations. Comparable to DAIKO as a large incumbent offering forwarding and adjacent port services, though with limited specialization in shipboard lashing or equipment maintenance.
• Mitsubishi Logistics Corporation: Mitsubishi Logistics operates large-scale warehouse and real estate businesses including port-adjacent logistics facilities in Japan. Overlaps with DAIKO's facility management and real estate divisions but does not specialize in shipboard operations or port equipment maintenance.

Emerging players

• Maruzen Showa Unyu Co., Ltd. Maruzen Showa Unyu is a Japanese logistics company with port-related forwarding, container transport, and warehousing operations. Comparable to DAIKO in offering port-adjacent logistics services, though more oriented toward container transport and 3PL than shipboard operations or equipment maintenance.
• Keihin Co., Ltd. Keihin is a Japanese port services company providing cargo handling and stevedoring at select Japanese ports. Comparable to DAIKO in providing specialized port labor services, but with narrower port coverage and smaller scale than DAIKO's five-port national footprint.
• Maruwa Unyu Kikansha Co., Ltd. Maruwa is a Japanese 3PL and port logistics provider with growing presence in port cargo handling and forwarding services. Comparable to DAIKO in offering port-adjacent services, but with a heavier emphasis on trucking-forwarding and warehousing rather than shipboard/equipment services.

Direct peers

• Sankyu Inc. Sankyu is a Japanese logistics and port operations company with nationwide coverage of port-related services including cargo handling, terminal operations, and warehouse management. Comparable to DAIKO in providing multi-port port operations support to industrial and shipping customers.
• Kamigumi (Kamigumi Co., Ltd.): Kamigumi is Japan's largest port logistics and stevedoring company, providing cargo handling, container terminal operations, and warehousing across major Japanese ports. Directly comparable to DAIKO as a fellow specialist in port operations support, though significantly larger in scale and broader in scope.
• Suzuyo & Co., Ltd. Suzuyo is a major Japanese logistics and port services company offering forwarding, port operations, and warehousing services. Comparable to DAIKO in providing integrated port-adjacent services to shippers and carriers at Japanese ports, especially in the Shizuoka/Yokohama region.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries9 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 DAIKO