Shin Kurushima Sanoyas Shipbuilding

What Shin Kurushima Sanoyas Shipbuilding does

Shin Kurushima Sanoyas Shipbuilding is a privately held Japanese shipbuilder operating three integrated divisions: New Shipbuilding, Ship Repair, and Gas Tank Manufacturing. Headquartered in Osaka with its main production facility at Mizushima Works in Kurashiki, Okayama Prefecture (675m x 63m building dock with two 800-ton gantry cranes), the company designs and constructs commercial vessels, performs repair and conversion work for shipowners and government fleets including the Japan Coast Guard, and manufactures marine cryogenic tanks for LPG, LNG, CO2, and ammonia fuel applications. The company was originally founded in 1911 as Sanoe An Zosen and was renamed Shin Kurushima Sanoyas Shipbuilding in February 2021 upon integration into the Shin Kurushima Dock Group; its current legal name in Japanese is Kabushiki Kaisha Shin Kurushima Sanoyas Zosen. It is a kabushiki kaisha (Japanese joint-stock corporation) with FY2024 revenue of 46.263 billion JPY.

The company's core products center on dry-bulk carriers, with a flagship 82,000 DWT Panamax series (28 vessels delivered historically, vessels 24-28 completed January 2025 to April 2026) and a 64,000 DWT Ultramax series (10 vessels delivered, vessels 6-10 completed May 2025 to November 2025), both featuring proprietary energy-saving devices: the STF tandem fin (patented May 2006) and the ACE DUCT (patented November 2017), delivering approximately 8% fuel savings. Additional offerings include 60,000-ton Spramax, 88,000-ton post-Panamax, 115,000-ton Afra tankers, wood chip carriers, ferries, and specialized work vessels. The gas tank division produces LPG tanks (over 50 systems delivered since 2000), LNG fuel tanks, LNG Fuel Gas Supply Systems (FGSS, first delivered 2020), and now ammonia Type C tanks; the company achieved world's-first AiPs from ClassNK for a full-refrigeration ammonia Type C tank (December 2024) and a Socket SPAR liquefied CO2 transport ship (March 2026).

The business model is B2B direct enterprise sales to shipowners globally, with pricing negotiated per contract (no public pricing). Revenue is recognized at vessel and tank delivery (point-in-time). Customer segments include global dry-bulk shipping companies (Mitsui O.S.K. Lines, international shipowners), repair-market operators (including Japan Coast Guard), other shipbuilders purchasing gas tanks, offshore construction companies, and domestic ferry operators (Nankai Ferry). Partnerships span Kawasaki Kisen Kaisha and Taiyo Densen for hybrid propulsion, Sumitomo Seika and Kobe Steel for FGSS and welding automation, Ueno Trans-Tech for CCUS, ClassNK as classification partner, and the University of Tokyo's MODE program for R&D. The company holds ISO 9001, ISO 14001, and ISO 45001 certifications and has received the 'Health Management Excellence Corporation' designation three consecutive years (2022-2024).

Name

Shin Kurushima Sanoyas Shipbuilding

Legal name

株式会社新来島サノヤス造船

Website

https://sanoyas.skdy.co.jp

Company type

Private

Founded year

1911

Operating status

Operating

Short description

Shin Kurushima Sanoyas Shipbuilding is a private Japanese shipbuilder (FY2024 revenue 46.3B JPY) operating new shipbuilding, ship repair, and marine gas tank divisions, building Panamax and Ultramax bulk carriers, special vessels, and LPG/LNG/CO2/ammonia fuel tanks for global shipowners and gas tank buyers.

Ownership category

akta.pro rank

Product category

Commercial Shipbuilding and Marine Engineering

NAICS

Ship Building and Repairing (336611)

SIC

Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Bulk Carrier Shipbuilding (Dry Bulk: Capesize/Panamax/Handysize) (IMAJAAAA)

Keywords

• Bulk carrier shipbuilding
• Marine gas tank manufacturing
• Fuel gas supply systems
• Ship repair services
• Specialty vessel construction

Headquarters

HQ city

Osaka

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. New Shipbuilding: Construction and delivery of new commercial vessels including Panamax bulk carriers, Ultramax bulk carriers, post-Panamax bulk carriers, chemical tankers, car carriers, ferries, and specialized work vessels. Revenue recognized at vessel delivery (point-in-time). Main production facility is Mizushima Works in Okayama Prefecture. 100+ Panamax bulk carriers delivered historically.
2. Ship Repair: Repair and maintenance of vessels including classification surveys, dry-docking, hull blasting and painting, machinery overhaul, and conversion work. Handled at both Mizushima Works (with 800-ton gantry cranes) and Osaka Works (repair dock facilities). Serves Japan Coast Guard vessels, merchant vessels, and group ships.
3. Gas Tank Manufacturing: Design and manufacture of marine gas tanks including LPG pressure tanks, semi-refrigerated LPG tanks, LNG fuel tanks, LNG cargo tanks, and CO2 tanks. Also includes FGSS (Fuel Gas Supply Systems). Tanks supplied to approximately 50 vessels since 2000. Manufacturing at both Osaka Works and Mizushima Works. Revenue recognized at tank delivery/installation.
4. FGSS (Fuel Gas Supply System) Supply and Engineering: Design, engineering, and supply of LNG fuel gas supply systems for gas-fueled vessels. First unit delivered in 2020. Expansion of production capacity planned at both Mizushima and Osaka works. Part of growing zero-emission fuel ecosystem.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Shin Kurushima Sanoyas Shipbuilding is a Japanese shipbuilder operating three divisions: New Shipbuilding (series-produced Panamax/Ultramax/post-Panamax bulk carriers, Afra tankers, wood chip carriers, ferries, and specialty work vessels built at Mizushima Works), Ship Repair (dry-docking, classification surveys, conversion work and high-speed engine servicing at Osaka and Mizushima), and Gas Tank Manufacturing (marine LPG, LNG, CO2 and ammonia tanks plus Fuel Gas Supply Systems for dual-fuel and zero-emission ships). All major newbuilds carry the company's proprietary STF and ACE DUCT energy-saving devices and are designed to meet IMO EEDI Phase 3, NOx Tier III and SOx regulations.

Product overview

Shin Kurushima Sanoyas Shipbuilding operates three core business divisions: New Shipbuilding (新造船部門), Ship Repair (修繕船部門), and Gas Tank (ガスタンク部門). The new shipbuilding division builds commercial vessels including Panamax Bulk Carriers (82,000-ton series with 100+ vessels delivered), Ultramax Bulk Carriers (64,000-ton series), Spramax Bulk Carriers, post-Panamax bulk carriers, Afra tankers, wood chip carriers, LNG-fueled vessels, and special vessels such as ferries and workboats. The ship repair division handles vessel maintenance and conversion at Osaka and Mizushima facilities, including high-speed engine services. The gas tank division manufactures LPG tanks (pressure and semi-refrigerated types), LNG fuel tanks, LNG Fuel Gas Supply Systems (FGSS), and CO2 transport tanks. The company holds ISO 9001 and ISO 14001 certifications for quality and environmental management.

Differentiator

Problem solved

Functional benefit

Products and services

• Panamax Bulk Carrier Series (82,000 DWT) Flagship 82,000-ton bulk carrier series with 100+ vessels delivered historically; includes proprietary STF and ACE DUCT energy-saving devices, CSR-B&T compliance, and EEDI Phase 3 compliance ahead of 2025 requirements. Built for global dry-bulk cargo owners.
• Ultramax Bulk Carrier Series (64,000 DWT) 64,000-ton bulk carrier series with compact <200m design, 5 cargo holds, 31-ton jib cranes and grab buckets; targets ports with draft/air-draft constraints while maintaining cargo-handling capability.
• Spramax Bulk Carrier (60,000 DWT) 60,000-ton bulk carrier with 4 onboard jib cranes, designed for ports that lack shore-based cargo handling equipment.
• Post-Panamax Bulk Carrier (88,000 DWT) (SORYU MARU-class) Wide-beam, shallow-draft 88,000 DWT bulk carrier for coal and grain transport, with 7 cargo hold divisions for versatile loading under CSR BC-A classification.
• Afra Tanker Series (115,000 DWT) 115,000-ton crude oil carrier with 44m beam — Japan's first in this class — enabling access to ports with shallower draft restrictions.
• Wood Chip Carrier Specialized vessel for paper-industry raw-material transport with onboard cranes, hoppers, and belt conveyors for efficient chip unloading; Sanoyas is Japan's leading builder in this niche with ~50 hulls delivered.
• Passenger/Vehicle Ferry (Ferry Awa class) 2,800 GT passenger/vehicle ferry with twin-hull stern, 546-passenger and 37-truck-equivalent capacity, designed for fuel-efficient Japanese coastal routes such as the Wakayama–Tokushima line.
• Barge Unloader Vessel 750 m³/h dredging vessel with up to 2,000 m discharge distance, automated systems and environmentally friendly engines; first new-build barge unloader in Japan in decades for marine construction and dredging firms.
• LNG Fuel Gas Supply System (FGSS) Integrated LNG fuel gas supply system — LNG fuel tank, vaporizer, buffer tank and related equipment — for LNG-fueled or dual-fuel vessels; multiple AiPs from major classification societies.
• Marine LNG Fuel Tank Cryogenic LNG fuel tank for ships converting from heavy oil to LNG fuel to support maritime decarbonization.
• Marine LPG Tank (Pressure & Semi-refrigerated) Pressure-type LPG tanks (850 m³ to 7,500 m³) for propane/butane carriage and semi-refrigerated LPG tanks (3,920 m³ to 7,000 m³) with cooling systems; over 50 vessels supplied since 2000.
• CO2 Transport Ship (Injection-Ready) World's first liquefied CO2 transport ship designed for Carbon Capture and Storage systems, with reserved space for offshore CO2 injection systems.
• Socket SPAR Liquefied CO2 Transport Ship (world's first AiP) World's first Socket SPAR liquefied CO2 transport vessel design (basic design AiP from ClassNK), intended to receive CO2 from transport ships for offshore seabed storage as part of a CCS value chain.
• Full-Refrigeration Ammonia-Dedicated Type C Tank (world's first AiP) World's first full-reflux ammonia-dedicated Type C tank system using cooling-only liquefaction at near-atmospheric pressure; weight reduction while maintaining Type C safety standards for ammonia-fueled ships.
• Ship Repair Services Vessel maintenance, classification surveys, dry-docking, hull blasting and painting, machinery overhaul, conversion work, and high-speed engine servicing (MTU, Caterpillar and other marine engines) at Osaka and Mizushima facilities for Japan Coast Guard and commercial shipowners.

Quantifiable outcome

• ~8% fuel savings from combined energy-saving devices (STF, ACE DUCT, rudder appendages)
• +7 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability6 records

Feature9 records

Partnerships

Nine partnerships are on record, tiered key and minor.

• Ueno Trans-Tech (上野トランステック株式会社)keyStrategic or Co-development Partner · 25 March 2026Sanoyas received commissioned R&D work on CO2 maritime transport technology from Ueno Trans-Tech as part of the Ministry of Environment's 'Environmentally Conscious CCUS Demonstration Project'. Sanoyas developed the Socket SPAR Liquefied CO2 Transport Ship concept, receiving ClassNK AiP approval. Ueno Trans-Tech serves as the consortium lead for this CCUS demonstration program targeting 2050 net-zero CO2 emissions.
• The University of Tokyo (東京大学)keyStrategic or Co-development Partner · 30 August 2023Participation in Tokyo University's 'Maritime Digital Engineering (MODE)' social collaboration research course. Sanoyas contributes to R&D on decarbonization, automation, next-generation fuel vessels, and energy-efficient ship design through the MODE program.
• Shin Kurushima Dock (株式会社新来島どっく)keyStrategic or Co-development Partner · 28 April 2023Joint development of LNG dual-fuel chemical tanker (26,000 DWT class) with FGSS. Shin Kurushima Dock handles ship construction while Sanoyas provides FGSS. Achieved ClassNK General Design Approval (GDA) for the complete vessel and gas supply system.
• Kawasaki Kisen Kaisha (川崎汽船株式会社)keyStrategic or Co-development Partner · 19 April 2022Joint development of LNG-fuel battery-equipped energy-saving bulk carrier concept. Kawasaki Kisen Kaisha provided shipowner perspective and operational requirements. Sanoyas handled ship design and engineering. Taiyo Densen collaborated on battery and shaft generator integration. Concept received ClassNK AIP approval.
• Taiyo Densen (大洋電機株式会社)keyTechnology or Integration · 19 April 2022Joint development of LNG-fuel battery hybrid bulk carrier with Kawasaki Kisen Kaisha and Sanoyas. Taiyo Densen contributed battery storage and shaft generator technology for the hybrid propulsion system achieving 2.5-3% additional fuel efficiency.
• Kurashiki City (倉敷市)keyStrategic or Co-development Partner · 9 March 2022Partnership agreement for carbon-neutral society promotion with Kurashiki City, where Sanoyas's Mizushima Works is located. Focuses on establishing Japan's first low-CO2 manufacturing process for gas fuel tanks, promoting LNG-fueled vessels, and contributing to regional decarbonization. Part of Kurashiki's Zero Carbon City challenge in the water-front industrial area (Mizushima Kombinat).
• CCR研究会 / 船舶カーボンリサイクルWGminorStrategic or Co-development Partner · 19 July 2021Carbon Capture & Reuse research association and Carbon Recycling Marine WG. Sanoyas participates as 1 of 9 member companies studying CO2 maritime transport for carbon recycling methane synthetic fuel. Other members include Mitsui O.S.K. Lines, ClassNK, JFE Steel, Nippon Steel, JGC, Hitachi Zosen, X-Engineering, and Japan Shipyard.
• Planning and Design Center for Greener Ships (一般財団法人 次世代環境船舶開発センター)minorStrategic or Co-development Partner · 27 October 2020Sanoyas participates as member of this industry consortium for advanced environmental vessel development, established by leading Japanese shipbuilders including Imabari Shipbuilding, Oshima Shipbuilding, Onomichi Dock, Japan Marine United, Shin Kurushima Dock, Sumitomo Heavy Industries Marine Engineering, Namura Shipbuilding, ClassNK, and Mitsubishi Heavy Industries. Sanoyas provides 1 technical researcher to the organization.
• ClassNK (一般財団法人 日本海事協会)keyTechnology or IntegrationShip classification society providing design approvals (AiP - Approval in Principle, GDA - General Design Approval) for Sanoyas vessel and tank designs. Multiple AiP/GDA certifications for CO2 transport ships, ammonia tanks, LNG fuel vessels, and hybrid battery vessels obtained through ClassNK. Also serves as secretariat for the CCR carbon recycling working group.

Scale indicators9 records

Recent moves11 records

Expansion highlights6 records

Others

• Kongsberg Maritime: Supplier of marine integrated systems including LNG fuel gas supply systems (FGSS), automation, and digital monitoring platforms. Comparable to Sanoyas's FGSS division as an enabling technology provider in the LNG/ammonia fuel transition, but a supplier rather than direct shipbuilder.

Regional players

• Mitsui E&S Shipbuilding: Japanese shipbuilder producing LNG carriers, bulk carriers, and naval vessels. Overlaps with Sanoyas on bulk carriers and LNG-fueled tonnage, with a stronger legacy position in large LNG carriers.

Direct peers

• Oshima Shipbuilding: Japanese mid-size shipbuilder specializing in bulk carriers (Capesize, Panamax, Ultramax) with strong series production. Direct overlap with Sanoyas in dry bulk newbuilds and a co-member of the Next-Generation Environment Ship Development Center.
• Namura Shipbuilding: Japanese mid-size shipbuilder producing bulk carriers, tankers, and LNG carriers. Similar scale and product overlap with Sanoyas, and also a co-member of the Next-Generation Environment Ship Development consortium.
• Onomichi Dockyard: Japanese mid-size shipbuilder producing bulk carriers, tankers, and coastal vessels. Comparable in scale and product mix to Sanoyas and a co-member of Japan's Next-Generation Environment Ship Development consortium.
• Imabari Shipbuilding: Japan's largest shipbuilder and a direct competitor in bulk carriers (including Panamax, Ultramax, Capesize) and tankers. Both firms compete head-to-head for Japanese and international shipowner orders in the same vessel classes Sanoyas produces.
• Tsuneishi Shipbuilding (incl. Tsuneishi Cebu): Japanese-headquartered shipbuilder with major Philippines operation, producing Kamsarmax and Ultramax bulk carriers competitively. Direct competitor in the same vessel categories, especially for Asian shipowner accounts.

Broad incumbents

• Kawasaki Heavy Industries (Ship & Offshore Structure Division): Diversified Japanese conglomerate with a shipbuilding division building LPG/LNG carriers and submarines. Sanoyas already partners with Kawasaki Kisen Kaisha (Kawasaki group) on LNG-fuel hybrid bulk carriers, making this both a partner-ecosystem and an indirect competitor in gas-fueled vessels.
• Japan Shipyard (Japan Marine United JV with Oshima): Major Japanese shipbuilder producing large bulk carriers, tankers, LNG carriers, and naval vessels. Competes broadly across Sanoyas's commercial vessel portfolio with greater scale and a wider product line.
• HD Korea Shipbuilding & Offshore Engineering (HD Hyundai): Korea's largest shipbuilding group, building LNG carriers, VLCCs, bulk carriers, and offshore vessels. Competes with Sanoyas in international bulk carrier tenders and represents the scale benchmark the Japanese mid-tier must compete against.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

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Frequently asked questions about Shin Kurushima Sanoyas Shipbuilding