SNR-SİSMİK is a modern offshore research platform developed to generate high-resolution subsurface data for energy exploration and marine geoscience applications. Its primary operational role is acoustic imaging of subsurface geological formations, reservoir characterization, seabed analysis, and marine environmental surveys.

Operational Role and Mission Profile

The vessel’s core mission is 2D and 3D seismic data acquisition.

• 2D seismic surveys are primarily used for regional reconnaissance and structural mapping.
• 3D seismic surveys provide volumetric subsurface imaging essential for reservoir modeling and drilling planning.

Beyond hydrocarbon exploration, SNR-SİSMİK supports marine construction projects, submarine cable route surveys, offshore wind farm site assessments, and seabed geotechnical investigations. Its oceanographic and hydroacoustic systems enable environmental monitoring and scientific marine research missions.

Concept of Operations

During seismic acquisition, the vessel sails along predefined survey lines while deploying streamer cables from the stern. These streamers contain hydrophone arrays that record reflected acoustic signals from subsurface layers.

The installed 4x4 streamer configuration supports active operations, while infrastructure for an 8x8 configuration allows scalability for higher data density and wider swath coverage.

The DP1 dynamic positioning system ensures precise station-keeping during ROV deployment and sensitive measurement operations, compensating for wind, current, and wave forces.

Platform Architecture

The vessel integrates three main subsystems:

• Data Acquisition System

Streamer arrays, acoustic sources, hydroacoustic sensors

• Onboard Processing and Command Facilities

Real-time quality control and preliminary data processing

• Propulsion and Positioning System

Diesel-electric propulsion architecture with azimuth thrusters and bow thruster

The electric propulsion system distributes power efficiently between propulsion and mission systems, increasing operational flexibility.

Seakeeping and Survivability

Although not a military vessel, SNR-SİSMİK is engineered for offshore endurance. It can conduct scientific operations up to Sea State 4 and helicopter operations up to Sea State 3.

With a 35-day endurance and 11,760 nautical mile range, it is capable of sustained offshore missions without frequent resupply.

Limitations

The DP1 classification provides basic redundancy but does not offer the fault tolerance level of DP2 or DP3 systems. Publicly available information does not indicate any defensive or armed systems onboard. Security during offshore operations typically depends on regional maritime security arrangements.

Detailed Technical Specifications

Dimensions and Displacement

• Length: 86 meters
• Beam: 19 meters
• Maximum beam: 23 meters
• Maximum displacement: 5,178 tons

Propulsion and Power System

• Diesel-electric propulsion system
• 4 × 2,650 kW generator sets
• 2 × 3,700 kW azimuth stern thrusters with nozzles
• 1 × 1,000 kW bow tunnel thruster
• DP1 dynamic positioning capability

Performance

• Economic speed: 14 knots
• Maximum speed: 17 knots
• Range: minimum 11,760 nautical miles
• Endurance: approximately 35 days

Survey Systems

Streamer Systems

• 4x4 active streamer configuration
• Infrastructure available for 8x8 configuration

ROV System

• 1 remotely operated underwater vehicle
• Capable of geological and oceanographic sampling and measurements

Aviation Capability

• Helicopter landing platform
• Operations up to Sea State 3

Crew and Service Life

• Accommodation for approximately 50 personnel
• Expandable personnel capacity
• Minimum 30-year economic service life

Specific details such as streamer lengths, acoustic source energy levels, sensor frequency bands, and onboard processing software specifications are not publicly disclosed.

Frequently Asked Questions

What is SNR-SİSMİK used for?

• It is used for offshore seismic data acquisition, subsurface imaging, seabed mapping, and marine geotechnical investigations. It supports energy exploration and scientific research missions.

What is the difference between 2D and 3D seismic surveys?

• 2D surveys provide linear cross-sectional imaging for reconnaissance purposes.
• 3D surveys deliver volumetric data for accurate reservoir modeling and drilling optimization.

What is its operational range?

• The vessel has a minimum range of 11,760 nautical miles, enabling extended offshore missions.

How long can it remain at sea?

• Approximately 35 days without resupply, depending on mission profile and crew requirements.

What does DP1 dynamic positioning provide?

• DP1 allows automated station-keeping using thrusters and onboard control systems. It ensures stable positioning during ROV and precision survey operations.

Does it have military capabilities?

• No publicly available information indicates the presence of armed or military systems. It is designed primarily for scientific and industrial missions.

Is it mobile or fixed?

• It is a fully mobile offshore survey vessel capable of global deployment within its operational range.

What are comparable vessels internationally?

• Comparable vessels include multi-purpose 2D/3D seismic research ships operated by European and Asian offshore survey companies. Configurations vary depending on streamer capacity and DP classification.

Sources

• İstanbul Shipyard official communications
• Publicly available shipyard product documentation
• Maritime industry publications
• Offshore survey vessel technical summaries