NB 157 – ESVAGT WIND 52
In May 2025, Hvide Sande Shipyard delivered the third boat in the STB15 series, the ESVAGT WIND 52. Built of aluminum, the 17,2-meter-long boat is powered by two Volta Penta D8 IPS 600 engines, enabling speeds of up to 25 knots and a certified range of 200 nautical miles.
The ESVAGT WIND 52 is one of three STB15 boats designed to bolster ESVAGT’s offshore wind service operations. Designed to meet ESVAGT’s high standards for safety, flexibility, and operational efficiency, these boats reliably transport personnel and cargo in challenging offshore conditions.
Specifications
| Vessel type | Crew transfer Vessel |
| Vessel name | ESVAGT WIND 52 |
| Delivery | First quarter 2025 |
| Description | The STB (Safe transfer boat) will be launched from a larger mothership |
| Hull material | Aluminum |
| Tonnage | 36 GT |
| Length over all | 17,2 m. |
| Breadth beam | 4,90 m. |
| Depth | 1 m. |
| Accomodation | 2 Crew / 15 Technicians |
| Main engines | 2 pcs. VOLTA PENTA IPS D8 331kW @ 2700 rpm |
| Aux. Engine | 1 pcs Panda 19i PMS |
| Speed (knots) | 25 knots |
| Propulsion | Volta D8 IPS 600 |
| Classification | Bureau Veritas |
| Other equipment | Henriksen Hook lifting arrangement, Humphree Stabilizers. |
Engineered for resilience and reliability
ESVAGT identified the need for a resilient and versatile daughter craft capable of safely and efficiently transferring personnel in varying sea conditions. The STB15 boats are designed specifically to serve offshore wind farms, either operating from a mothership or directly from port, ensuring uninterrupted service in all operational scenarios.
A key aspect of the project was delivering three Crew Transfer Vessels (CTVs) that are built with proven reliability and adaptability to meet a wide range of offshore requirements. Hvide Sande Shipyard’s extensive experience in precision aluminum shipbuilding made us a natural partner for the task.
High demands with technical precision
The ESVAGT WIND 52 is engineered to meet the rigorous demands of offshore wind support operations. Designed for daily operations, the boat can launch from a mothership or directly from the port, making it a resilient and adaptable addition to ESVAGT’s fleet. One of three STB15 boats built at Hvide Sande Shipyard, the ESVAGT WIND 52 measures 17,2 meters in length and has a durable aluminum hull designed for offshore performance.
Each boat in the series is powered by two Volta Penta D8 IPS 600 engines capable of reaching speeds up to 25 knots and certified for a range of 200 nautical miles. With the capacity to transport up to fifteen technicians and two ton of cargo, the ESVAGT WIND 52 provides a reliable, high-performance service where it matters most.
A strong collaboration
“When we started the STB12 project in 2014, 3D drawing technology was still developing, so we built a full-scale mockup. For vessels 5–8, we chose Hvide Sande Shipyard to support the Danish industry. CEO at Seasight Group Carl Erik Kristensen visited us early on and quickly confirmed their ability to deliver at the right price. The cooperation has been excellent. Our goal was to be equal partners before and after delivery, and we achieved that. Hvide Sande Shipyard delivers high-quality work with strong documentation and process control. Challenges were solved constructively, and agreements were upheld, even without much discussion”
Søren Westphal, Senior Project Manager at ESVAGT
About the ESVAGT WIND project
ESVAGT is a leader in safety and service at sea, especially in the offshore wind sector. Built in close collaboration with ESVAGT, the STB15 series meets the demands of modern offshore operations, where safety, speed, and dependability are essential.
