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Our field of expertise
Astra-G
Astra-G is the World’s first purpose-built seismographic research support vessel.
When Rederij Groen, a Scheveningen-based service supplier to the offshore industry, secured a long-term charter contract for two chase vessels for seismographic research, a strategic consideration was made which resulted in the decision to develop the world’s first purpose-built seismographic research support vessels.
It is our vision to design vessels with sustainability in mind. The preliminary design consisted of the hull lines, a general arrangement and a technical specification. The initial design brief called for a tonnage below 500GT, comfortable accommodation above the main deck, a practical aft working deck and a spacious wheelhouse with good views both forward and aft.
The design of the Astra-G and Aquarius-G was primarily based on her seakeeping behavior at low speed. Saltwater concluded that a sharp bow, with U-shaped sections and minimal bow flair, along with V-shaped stern sections would yield the best result. At low speeds stern slamming becomes an important issue, V-shaped stern frames help reduce the force of the impact.
![Astra-G & Aquarius-G Astra-G & Aquarius-G](https://www.saltwater.nl/wp-content/uploads/2023/07/1126-Astra-G-Flying-Focus_FF60042-185x200-1.jpg)
The collaborative effort to design the perfect vessel exemplified the seamless blend of expertise and creativity of Saltwater, resulting in the Astra-G, a ship that meets all our expectations.
Erik Groen | Operations Manager
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Specific project data
Project information
Task
- Design of a purpose built chase vessel
Deliverables
- Basic design
- Class approval package
- Detailed engineering
![astra8-1024x576-1 Astra-G & Aquarius-G](https://www.saltwater.nl/wp-content/uploads/2021/10/astra8-1024x576-1.jpg)
![astra7-1024x576-1 Astra-G & Aquarius-G](https://www.saltwater.nl/wp-content/uploads/2021/10/astra7-1024x576-1.jpg)
![astra6-1024x576-1 Astra-G & Aquarius-G](https://www.saltwater.nl/wp-content/uploads/2021/10/astra6-1024x576-1.jpg)
![astra2-1024x576-1 Astra-G & Aquarius-G](https://www.saltwater.nl/wp-content/uploads/2021/10/astra2-1024x576-1.jpg)
![astra4-1024x576-1 Astra-G & Aquarius-G](https://www.saltwater.nl/wp-content/uploads/2021/10/astra4-1024x576-1.jpg)
![Astra5-1024x576-1 Astra-G & Aquarius-G](https://www.saltwater.nl/wp-content/uploads/2021/10/Astra5-1024x576-1.jpg)