POSEIDON-1

Subsea Operation Vessel (4,270GT)

POSEIDON-1 is a multipurpose work vessel having served for oceanographic surveys and offshore projects where precise operations and reliable vessel performance are essential.

Even in highly variable sea conditions, the vessel is operated with safety as the foremost consideration, while ensuring steady performance of surveys and offshore work with confidence. The vessel has supported a wide range of high-precision projects as a dependable platform for offshore operations.

How POSEIDON-1 Works

Moon Pool and Derrick

A moon pool is an opening through the center of the hull that provides direct access to the water below from within the vessel. Compared with over-the-side operations, it allows work to be carried out near the vessel’s center of motion, thus reducing the effects of waves and vessel movement and enabling drilling equipment to be deployed and recovered more stably.
The derrick is installed directly above the moon pool and supports lifting, connection, and lowering of drill pipe and casing, making it a central component for offshore drilling operations. Together, the moon pool and derrick enable safer and more efficient drilling at sea.

DUAL DP

A system in which DP equipment is arranged in a dual-redundant configuration. As generators, thrusters, and control systems are separated into two or more independent systems, position keeping can continue even if a single failure occurs in one system.

This redundancy is required for projects involving high-precision operations such as offshore wind turbine installation and drilling, where any deviation from the required position could directly lead to a serious accident or damage to equipment.

ABS Class

POSEIDON-1 has been classified by ABS (American Bureau of Shipping), a major international classification society with a long history and extensive experience. ABS is particularly strong in technical standards for marine development and offshore operations, with substantial experience in classifying drilling vessels and offshore support vessels.
Maintaining classification with an internationally recognized classification society helps demonstrate the vessel’s reliability when participating in global projects or working with overseas operators.

Two Z-Peller Azimuth Thrusters and Two Bow Thrusters

POSEIDON-1 is equipped with two Z-Peller azimuth thrusters and two bow thrusters. Each unit can rotate independently through 360 degrees, allowing thrust to be directed as required. Working together, the two units provide high maneuverability and redundancy.

Even when one unit suffers a failure, the vessel can continue propulsion and maneuvering with the remaining unit, thus helping to maintain safety during offshore operations. Together with the DP system, these thrusters also support precise station keeping.

SPS (Special Purpose Ships Safety Code)

SPS certification indicates compliance with the IMO safety standards for special purpose ships. Vessels conforming to the SPS Code are permitted to carry special personnel engaged in projects, in addition to crew members and passengers.
In offshore projects such as drilling, construction, and survey work, it is common for technical specialists, operators, and other personnel who are not part of the vessel’s crew to work on board. Holding SPS certification demonstrates that the vessel is capable of accommodating and supporting these types of project operations.

Accommodation Facilities (up to 74 persons; private showers in all cabins)

The vessel can accommodate up to 74 engineers, operators, and other personnel engaged in offshore projects. Each cabin is equipped with a private shower, providing a high level of privacy and comfort during extended stays at sea. Well-equipped accommodation facilities also help maintain and improve performance and safety awareness of project personnel, allowing customers to assign personnel to the vessel with confidence.

Key Features

The vessel’s defining feature is its dual DP system. GPS-linked automatic station keeping allows the vessel to maintain position during survey operations and equipment deployment work while counteracting the effects of currents and wind. This capability is essential for high-precision marine survey and development projects.

Survey and drilling equipment can be deployed and recovered through the moon pool at the center of the hull, and thereby allow work to be carried out in a more stable operating area within the vessel.

The vessel also supports ROV operations, allowing underwater cameras and various sensors to be used for visual inspection and measurement of the seafloor. From marine surveys to resource development support, POSEIDON-1 is operated as a versatile platform capable of meeting a wide range of project needs.

MANAGED VESSELS