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IT Home reported on July 27 that according to CCTV News yesterday (July 26), the "Marine Geology 26" survey ship was in the Qiongzhou Strait.The first "ship installation" combined with sea trials after commissioning has been completed.

Brief Introduction of Survey Vessel "Marine Geology 26"

The "Marine Geology No. 26" survey vessel was launched in October 2020, the design plan was approved in November 2021, construction started in July 2022, it was launched in December 2023, and comprehensive sea trials were completed in April 2024. It is a new type of multifunctional scientific survey vessel positioned for comprehensive geological survey and research of islands (reefs), affiliated to the China Geological Survey under the Ministry of Natural Resources.

Image source: CCTV News

The ship has a gross tonnage of 1311, a total main engine power of 2426 kilowatts, a displacement of 1713 tons, a total length of 63.5 meters, a beam of 12.6 meters, a depth of 4.6 meters, a draft of 3.2 meters, a crew of 34 people, a self-sustaining capacity of 35 days, and a cruising range of 3500 nautical miles. The whole ship is propelled by twin-engine full-rotating rudder propellers, equipped with a bow thruster and a DP1 dynamic positioning system, and has good stability, maneuverability and seaworthiness.

It is reported that the ship is equipped with 32 sets of advanced marine geological survey technical equipment, including marine engineering drilling systems, static sounding systems, multiple geophysical survey systems and marine operation support systems, which can be used for marine engineering surveys, marine energy and mineral surveys, comprehensive surveys of island (reef) natural resources and other types of surveys and research.

The sea trial mission

The sea trial mission includes a number of key tests such as multi-beam, ocean magnetics, single-channel seismic, and ship power systems, aiming to obtain important test data and provide strong technical support for the next stage of ocean and island reef survey operations.

Based on the report, IT Home briefly attaches the relevant test items as follows:

• Multi-beam soundingIt means obtaining underwater high-density strip-style seabed topography data through wide-angle transmission and multi-channel directional receiving technology, which can greatly improve the accuracy, resolution and work efficiency of seabed topography surveys.

• Marine magnetic measurementsIt is a method that uses the magnetic differences of seabed rock layers to detect the Earth's magnetic field. It plays a key role in studying marine geological structures, mineral resource prediction, and studying seafloor spreading and plate tectonics.

• Single channel seismic measurementIt is a technology that detects the seabed stratigraphic structure through the propagation and reflection of seismic waves. It can penetrate and distinguish muddy strata 100-200 meters deep. It is widely used in marine engineering geological surveys and geological disaster prediction, providing important data support for the stratigraphic formation process and seabed geological body identification.