ABOUT US

Beyond
Offshore Vessel
Management
,
Toward the
Future of Offshore
Operations
.

What Kyoei Marine undertakes is not merely vessel management.
What we provide is "the success of projects conducted at sea."

Centered on safety, we reliably satisfy requirements demanded at offshore sites
that are connected to the future of the ocean, and we see the work through to completion.

The foundation for this is the strengths of our "four powers."

The Four Powers
Behind Project Success

共栄マリンの4つの力の図(価値提供:プロジェクトの成功) 共栄マリンの4つの力の図(価値提供:プロジェクトの成功)

The power to protect, the power to pioneer, the power to support, and the power to respond ― unique strengths of Kyoei Marine that enable project success.

True to the meaning of Kyoei — shared prosperity — we grow together with our customers, employees, the ocean, and society. This commitment guides our everyday decisions and is reflected in every action we take in the field.

1

Safety and Security The Power to Protect

Leading with
Global Standards,
Embedding
Safety
as a Culture.

Kyoei Marine has been involved in the operation management of offshore vessels for more than 40 years. In fact, we were early to adopt management systems aligned with the ISM Code and IMCA standards, and have continuously strengthened our approach to safety management.

Education, training, development of manuals, maintenance, and troubleshooting ― by steadily accumulating these day-to-day operations, we have established "zero serious marine accidents" not merely as a goal, but as a behavioral standard for our organization.

How Kyoei Marine Ensures Safe Operations

01Employment of Crew as the Foundation
for Safe Operation

While the maritime shipping industry as a whole faces a shortage of seafarers, we have employed and retained many seafarers with an interest in offshore vessel operations over many years. In particular, we are committed to activities that promote awareness of offshore vessels. Ultimately, we believe that the quality of safe operation depends on the skills and judgment of each individual crew member.

共栄マリンの船員たち
02Management System Aligned
with International Standards

In addition to meeting the requirements applicable to vessels engaged in international voyages, including the ISM Code and ISPS Code, we have established a management system aligned with IMCA standards. We also support DPS operation and DPO development, enabling world-class safety management for offshore vessels.

ブリッジで操船中の航海士たちの様子
03Ongoing Education
and Training

We provide regular safety education and training for crew members and shore-side staff. In addition to what is required of seafarers, we enhance skills and judgment for handling offshore vessel-specific technologies and changing field conditions, creating the foundation for safe operation.

訓練中のデッキの様子
04Operational Decisions
Centered on Human Life

To "create a world with no serious marine accidents" is the standard by which we make decisions. Even on occasions where deadlines or schedules are pressing, returning to this starting point helps us prevent accidents and trouble.

ブリッジに立つ船長の様子

Highlights

Official Member of IMCA

Kyoei Marine officially became a member of IMCA in 2025 and has established an offshore vessel management system aligned with international standards.

IMCA is an international association that develops safety and quality standards for offshore operations, and alignment with its standards demonstrates a world-class management system.

Kyoei Marine has established robust capabilities in highly specialized areas, including DP system operation, DPO training and development, and support for offshore wind and marine development projects.

IMCAロゴ
管理船舶POSEIDON-1の外観 管理船舶POSEIDON-1の外観
Submarine Drilling Surveys

In submarine drilling surveys, we prepare bridging documents that align the drilling contractor’s safety management standards with vessel operation standards, thereby establishing operational arrangements that satisfy both sets of safety requirements.

We prepare procedures that address risks, including thresholds for when to initiate evacuation if equipment trouble occurs, and conduct safety management accordingly.

We effectively cope with advanced safety requirements of drilling sites by applying our vessel operation know-how.

物資補給の様子 物資補給の様子
Offshore Supply Operations

Even in areas with strong tidal currents, we use DPS for precise station keeping while safely carrying out the transfer of supplies offshore.

In response to rapidly changing offshore conditions, including heavy weather and shifts in current, we work closely with shore-based managers and the Marine Operations Department to set operational criteria based on the performance limits of vessel equipment, enabling prompt and appropriate decisions, including suspension of operations when necessary.

Through a combination of high-level vessel-handling skills and shore-side support, we deliver reliable supply operations.

2

Trust and ExecutionThe Power to Respond

Delivering on
Customer Expectations Through Experience
and Proven Systems

Our experience across a wide range of offshore operations, combined with a management system built on training, manuals, and international standards, enables us to respond calmly to schedule changes, changing weather conditions, and unexpected issues.

We accurately grasp site conditions and reach optimal decisions through coordination between onboard and shore-side teams. By preparing on the assumption that the unexpected will occur, we execute projects while minimizing such potential impact.

What matters is results. We meet those expectations reliably through experience and systems.

Operations Management
That Delivers Results

01Support for Both Procedural
and Hardware Aspects

We support both procedural aspects, such as procedures and operational design, and hardware aspects such as equipment and machinery to translate diverse project requirements into executable forms.

エンジンルームでメンテナンス中の機関士
02Coordination
that Supports Stable Operation

Onboard and shore-side teams coordinate closely and flexibly address client requirements that vary from project to project. Through repeated decision-making and coordination, we support the field for project success.

無線で連携をとる航海士の横顔
03Rapid Recovery Response

The ultimate goal is project success. Even when an issue arises, our onboard and shore-based teams work together to identify the cause and respond quickly, with systems in place to minimize any impact on the schedule.

陸上スタッフと船長の連携の様子
04Building Systems Aligned
with Global Standards

Our capabilities support third-party vessel inspections, including eCMID, OVID, and pre-mobilization inspections, and help establish management systems aligned with European standards.

管理船舶の外観

Highlights

リベリア船籍ロゴ
Flexible Response to Changes of Flag

We can handle flag changes in response to customers’ project needs. Specifically, we have experience handling changes to the Liberian flag.

Changing a vessel’s flag involves a wide range of specialized procedures, including compliance with the maritime laws and treaty requirements of a relevant country and preparation of necessary documents.

To reliably satisfy the operating conditions required by customers, we have built capabilities to promptly and accurately handle complex flag procedures.

管理船舶の外観
Classification Support Aligned
with Construction Schedules

For newbuild projects with tight construction schedules, we provide support for ABS classification requirements, helping to ensure that the necessary standards are met without delaying the customer’s project plans.

船内で提供している料理の例 船内で提供している料理の例
Meal Service for Large, Multinational Crews

On one of the world’s largest SEP vessels, we provide stable meal services to more than 100 multinational crew members on board. We have established catering arrangements that consider diverse food cultures and religious requirements, including halal food.

At large-scale offshore sites, the quality and stable supply of meals directly affect the health maintenance and work efficiency of persons on board. Consideration for each person from different cultural and religious backgrounds is the basis for the relationship of trust across the entire site.

From the perspective of food, Kyoei Marine reliably offers an environment in which persons on board with diverse backgrounds can concentrate on their duties with peace of mind.

プロジェクトの様子 プロジェクトの様子
Supporting Projects Requiring
Advanced Shiphandling Skills

We have a record of delivering results with reliable skills even in projects requiring advanced shiphandling techniques. We also handle supply operations in sea areas affected by currents and waves, as well as the salvage of sunken objects.

Such operations require precise position control and instantaneous situational judgment, making advanced skills and experience beyond ordinary operations indispensable.

We reliably meet the demands of highly challenging sites that go beyond the scope of general vessel operations through extensive experience and outstanding shiphandling skills.

3

Challenges and the FutureThe Power to Pioneer

Challenging New Fields
through Diverse Projects
and Specialized Vessels

We actively participate in next-generation marine projects such as offshore wind and marine resource development.

Through operation and management of specialized vessels such as SEP vessels and survey vessels, we have opened up new sea areas and fields in Japan and overseas. Sites that face unknown conditions and advanced requirements are also places where judgment and technical capabilities can be refined.

Each new challenge strengthens our organization and drives us forward.

Deployment Capabilities that Turn New Fields into Reality

01Participation in Next-Generation Fields

We steadily expand our business domains while taking on new areas of the marine industry, including subsea resource surveys and development, and surveys and construction for offshore wind power generation.

ROV海底調査の様子
02Embracing New Technologies

DPS has become indispensable for offshore wind and subsea resource development. Kyoei Marine first became involved in the operation of Shinryu Maru, a vessel equipped with this technology, in 2000, when DPS operational know-how was still limited in Japan.

We have continued, and will continue, to embrace new technologies.

DPSを用いたプロジェクトの様子

Highlights

SEP船「BLUE WIND」外観 SEP船「BLUE WIND」外観
Managing
One of the World’s Largest
SEP Vessels

In 2023, we began managing BLUE WIND, then one of the world’s largest self-propelled SEP vessels. We were entrusted with this giant vessel, which installs large wind turbines with a 2,500-ton lifting crane, because of our track record of more than 40 years of involvement with offshore vessels.

We are taking on the new field of offshore wind with reliable experience.

調査船「POSEIDON-1」外観 調査船「POSEIDON-1」外観
Management of Japan’s
First Private-Sector
Subsea
Resource Drilling Vessel

POSEIDON-1 is a vessel that drills for seafloor resource surveys. At the time the vessel was first put in service, there was no precedent in Japan for both the shipowner and the ship management company to be private-sector companies conducting seafloor drilling surveys.

Kyoei Marine has built the required capabilities from the ground up, from securing and training crew to establishing safe vessel operations. With a willingness to take on new challenges and reliable vessel operations, we support survey projects at the forefront of marine resource exploration.

「海底熱水鉱床の採鉱・揚鉱パイロット試験」の様子 「海底熱水鉱床の採鉱・揚鉱パイロット試験」の様子
The World’s First
Excavating
and Ore-
Lifting Pilot Test

Kyoei Marine participated in the world’s first excavating and ore-lifting pilot test for seafloor polymetallic sulfide deposits. The purpose of this test was to verify technology for continuously lifting ore together with seawater to the surface from a depth of approximately 1,600 m off Okinawa. This was a significant step forward for us to establish the marine resource development technology.

4

Society and PurposeThe Power to Support

Responsibility
to Supportthe
Ocean and Society

Projects in which we are involved are directly associated with marine and social infrastructures.

We support essential marine operations, from salvage work that helps protect lives and the marine environment to offshore wind projects that contribute to the energy transition, all underpinned by safety-based operations management, environmental stewardship, and a commitment to sustainable energy.

Although much of our work takes place behind the scenes, we approach our daily responsibilities with the awareness that each task helps support the ocean and society.

Supporting Marine and Social Infrastructures

01Marine Salvage

Our marine salvage operations contribute to minimizing environmental damage. We are equipped to help prevent environmental damage from spreading in the event of a marine casualty.

サルベージの様子
02Oceanographic Surveys
that
Support Social Infrastructure

Seabed geotechnical surveys and oceanographic surveys are important processes that serve as prerequisites for offshore wind construction and subsea resource development. Through the ship management of survey vessels and work vessels, we reliably carry out various survey operations.

調査船「POSEIDON-1」外観
03Supporting Renewable Energy

Through management of offshore vessels, including self-elevating platform (SEP) vessels used for offshore wind turbine installation, we contribute to the spread of renewable energy and the realization of a sustainable society.

洋上風車を建設中のBLUEWINDの様子

Highlights

SEP船「BLUE WIND」と風車 SEP船「BLUE WIND」と風車
Support for Renewable Energy Development

Since 2023, we have been involved in the construction of offshore wind power facilities by beginning ship management of a self-propelled SEP vessel for offshore wind power generation and wind turbine installation. This represents our role in supporting the development of energy infrastructure for the realization of a decarbonized society.

サルベージの様子 サルベージの様子
Marine Salvage

We provide salvage services, i.e., towing vessels disabled by equipment failure or grounding to designated ports, helping support the safety of maritime transport and the protection of the marine environment.