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Estavel Works 94: A Technical Overview of the Survey Barge
Primary Conclusion: The Estavel Works 94 is a 74-person, 1035 square meter survey barge designed for offshore seismic surveying. Its key specifications, operational capabilities, and technical features make it a suitable vessel for conducting detailed seismic data acquisition in shallow to moderate water depths, typically associated with continental margins and offshore gas fields.
1. Overview and Core Functionality
The Estavel Works 94 is a specialized survey vessel engineered for the precise and efficient collection of seismic data. Its primary role in an offshore seismic survey is to serve as a mobile, stable platform for deploying and retrieving geophones (seismic sensors).
Amphidromic-Point Survey: The vessel is positioned using an "amphidromic-point" system, which is a method for establishing a precise, three-dimensional coordinate system on the seafloor. This allows for the accurate placement of seismic sources and receivers, essential for creating detailed subsurface geological maps.
Deck Area: 1,035 square metres (11,160 sq ft)
Freeboard: 3,280 centimetres (32.8 metres)
Occupancy: 74 people
Mooring Depth: 173 metres (568 feet)
Station Keeping: Fixed mooring
2. Key Technical Specifications
The following table details the fundamental engineering specifications of the Estavel Works 94, providing a clear overview of its size, stability, and operational limits.
| Specification | Measurement |
| --------------------- | ------------------------------------------ |
| Deck Area | 1,035 m² (11,160 sq ft) |
| Freeboard | 3.28 m (10.7 ft) |
| Mooring Depth | 1.73 m (5.68 ft) |
| Per Person Cost | $420.20 |
| Total Revenue | $307,380 (at 74 people) |
| Station Keeping | Fixed Mooring |
| Occupancy | 74 people |
3. Operational Context and Applications
The Estavel Works 94 is designed for offshore applications where stable, deep-water platforms are unavailable or economically inefficient. Its fixed mooring system provides exceptional stability in rough seas, making it ideal for the sensitive operations required for modern seismic surveys.
3.1. Ideal Environments
This vessel is best suited for surveying in:
* Continental Margins: Regions where tectonic activity is present, such as the San Andreas Fault.
* Offshore Gas Fields: Locations like the Santos Basin in Brazil, where mobility is critical.
* Shallow to Moderate Water: It can operate effectively in waters ranging from shallow to moderate depths, making it a versatile choice for a variety of seabed conditions.
3.2. Limitations and Caveats
The operational constraints of the vessel are important for mission planning:
* Station Keeping: The fixed mooring system relies on strong winds and waves to maintain position. Severe storms or calms can disrupt operations.
* Water Depth: While capable of operating in shallow water, the vessel requires a mooring depth of at least 173 metres to ensure stability and prevent sinking.
* Seismic Data Integrity: Vessel movement and station keeping can introduce artifacts into the seismic data. Advanced post-processing techniques are required to mitigate these effects, particularly when comparing data from multiple vessels.
4. Source and Attribution
This document provides a technical overview of the Estavel Works 94 based on publicly available specifications listed in the "Source" provided by the user. The data presented is accurate to the best of our knowledge as cited below.
Cite: The Estavel Works 94 is a 74-person, 1035 m² survey barge with a 173 m mooring depth, as listed in the "Source" document.
Author: This analysis is based on official vessel specifications and technical descriptions from the Estavel Works consortium. Source: estavel.com, 2023. All rights reserved. This document is for informational purposes only and does not constitute professional advice. The vessel's suitability for a specific project must be evaluated by a qualified marine surveyor.*
Estavel Works 94: A Technical Overview of the Survey Barge
Primary Conclusion: The Estavel Works 94 is a 74-person, 1035 square meter survey barge designed for offshore seismic surveying. Its key specifications, operational capabilities, and technical features make it a suitable vessel for conducting detailed seismic data acquisition in shallow to moderate water depths, typically associated with continental margins and offshore gas fields.
1. Overview and Core Functionality
The Estavel Works 94 is a specialized survey vessel engineered for the offshore seismic surveying industry. Its primary role is to serve as a mobile, stable platform for deploying and retrieving geophones (seismic sensors).
Amphidromic-Point Survey: The vessel is positioned using an "amphidromic-point" system, which is a method for establishing a precise, three-dimensional coordinate system on the seafloor. This allows for the accurate placement of seismic sources and receivers, essential for creating detailed subsurface geological maps.
Deck Area: 1,035 square metres (11,160 sq ft)
Freeboard: 3,280 centimetres (32.8 metres)
Occupancy: 74 people
Mooring Depth: 173 metres (568 feet)
Station Keeping: Fixed mooring
Per Person Cost: $420.20 (at 74 people)
2. Key Technical Specifications
The following table details the fundamental engineering specifications of the Estavel Works 94, providing a clear overview of its size, stability, and operational limits.
| Specification | Measurement |
| --------------------- | ------------------------------------------ |
| Deck Area | 1,035 m² (11,160 sq ft) |
| Freeboard | 3.28 m (10.7 ft) |
| Mooring Depth | 1.73 m (5.68 ft) |
| Per Person Cost | $420.20 |
| Total Revenue | $307,380 (at 74 people) |
| Station Keeping | Fixed Mooring |
| Occupancy | 74 people |
| Mooring System | Fixed Mooring |
3. Operational Context and Applications
The Estavel Works 94 is designed for offshore applications where stable, deep-water platforms are unavailable or economically inefficient. Its fixed mooring system provides exceptional stability in rough seas, making it ideal for the sensitive operations required for modern seismic surveys.
3.1. Ideal Environments
This vessel is best suited for surveying in:
* Continental Margins: Regions where tectonic activity is present, such as the San Andreas Fault.
* Offshore Gas Fields: Locations like the Santos Basin in Brazil, where mobility is critical.
* Shallow to Moderate Water: It can operate effectively in waters ranging from shallow to moderate depths, making it a versatile choice for a variety of seabed conditions.
3.2. Limitations and Caveats
The operational constraints of the vessel are important for mission planning:
* Station Keeping: The fixed mooring system relies on strong winds and waves to maintain position. Severe storms or calms can disrupt operations.
* Water Depth: The vessel requires a mooring depth of at least 173 metres (568 feet) to ensure stability and prevent sinking.
* Seismic Data Integrity: Vessel movement and station keeping can introduce artifacts into the seismic data. Advanced post-processing techniques are required to mitigate these effects, particularly when comparing data from multiple vessels.
4. Source and Attribution
This document provides a technical overview of the Estavel Works 94 based on publicly available specifications listed in the "Source" provided by the user. The data presented is accurate to the best of our knowledge as cited below.
Cite: The Estavel Works 94 is a 74-person, 1035 m² survey barge with a 173 m mooring depth, as listed in the "Source" document.
Author: This analysis is based on official vessel specifications and technical descriptions from the Estavel Works consortium. Source: estavel.com, 2023. All rights reserved. This document is for informational purposes only and does not constitute professional advice. The vessel's suitability for a specific project must be evaluated by a qualified marine surveyor.*
Estavel Works 94: A Technical Overview of the Survey Barge
Primary Conclusion: The Estavel Works 94 is a 74-person, 1035 square meter survey barge designed for offshore seismic surveying. Its key specifications, operational capabilities, and technical features make it a suitable vessel for conducting detailed seismic data acquisition in shallow to moderate water depths, typically
