Acta Marine, Bygg nr. 1120-1123 ved Tersan Shipyard, ULSTEIN SX216 4x "Acta TBN"

Jose Jorge

Active Member

Acta Marine expands offshore wind farm support and orders two next generation methanol powered CSOVs at Tersan Shipyard​

June 14, 2022
Acta Marine has signed a contract for the construction of two next generation Methanol MDO/HVO powered DP2 Construction Service Operating Vessels (CSOVs) at Turkish shipyard Tersan with two optional vessels for delivery at a later stage. The vessels are primarily aimed at the offshore wind construction market and carry the new SX-216 TWIN-X Stern design from Ulstein Design & Solutions AS that was exclusively designed for and in cooperation with Acta Marine.
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“Acta Marine is growing along with the offshore wind construction market by ordering these two vessels while remaining one of the leaders in this field. The dedicated SX-216 design with a TWIN-X stern, an integrated walk-to-work gangway system and 3D crane and its hotel style accommodation represents a next step in responding to the market needs,” says Rob Boer, Managing Director at Acta Marine. “A first in offshore wind this vessel will be capable of operating on dual fuel methanol and MDO/HVO enabling a strong carbon footprint reduction in the near future in combination with a battery power system. Furthermore, we are very excited that we have been able to sign an agreement with Tersan Shipyard that is well known for its quality and professionalism.”

In-field agility, high operability and workability, safe transfer of people and cargo, optimized on-board logistics, high productivity and high comfort for charterers’ crews are of eminent value throughout the design of this vessel. With a strong ESG and sustainability focus Acta Marine sees methanol as one of the most viable alternatives to minimize her carbon footprint in the marine space and more specifically for offshore vessels. “Dual fuel methanol driven propulsion trains score high in terms of technology readiness and are eligible for further enhancement to a single fuel methanol upgrade at a later stage. This will allow early application of significant CO2 reduction measures now, while still allowing net-zero operations over the life of the ship", states Simon Anink, General Manager at Acta Marine.

The CSOV measures 89 metres in length, 19 metres in width and accommodates up to 135 people in 85 cabins. It will be equipped with an SMST provided Motion Compensated Gangway system, mounted on an integrated tower with height adjustment and a personnel/cargo lift. Additionally, the vessel features an SMST 3D-motion compensated crane with 6t lifting capacity. Cargo area is 500 square metres indoors, and 500 square metres outdoors. The vessel shall provide for walk-to-work transfer of personnel and cargo, efficient and safe in significant wave-heights (Hs) up to 3.0 metres.

“We are very pleased that Acta Marine has chosen Tersan for this project. We are looking forward to the cooperation and to deliver the new vessels to the growing renewables industry,” comments Sakir Erdogan BD Director at Tersan Shipyard.

Acta Marine’s new CSOVs can take on assignments in commissioning and construction of offshore wind farm installation phase and perform maintenance tasks on completed wind farms. The first two vessels are scheduled for delivery Q2 and Q3 2024.

Since its pioneering introduction of Walk to Work vessel Acta Orion late 2015 followed by Acta Auriga and Acta Centaurus, Acta Marine has transferred over 150,000 workers to and from wind turbines and offshore structures in sometimes challenging weather conditions. With these new state-of-the-art additions to the fleet Acta Marine upholds her good name and continues her prominent position in the offshore wind market.
 
Noken som veit bygge nr. på desse to siste i denne serien på fire?
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Illustrasjon: Ulstein Design & Solution
 
Ulstein designs two more methanol fuelled CSOVs for Acta Marine

Published 07. June 2023

PRESS RELEASE

Ulstein Design & Solutions AS has signed a contract with Tersan Shipyard for two methanol-fuelled ULSTEIN SX216 Construction Service Operating Vessel (CSOV) designs. The vessels will be constructed for the Netherlands-based Acta Marine and will be number 3 and 4 with the novel TWIN X-STERN solution in the Acta fleet.

The ship owner Acta Marine has already signed a long-term contract for a 12-year basis with RWE for the two vessels to support North Sea wind farms.

The vessels are expected to begin operation from the Port of Grimsby in early 2025 and 2026.

Why is the TWIN X-STERN perfect for offshore wind service operations?

The TWIN X-STERN vessels have two sterns and two main propeller units at each end. Placing either end towards the weather results in excellent operability without limitation on vessel speed. The TWIN X-STERN solution leads to improved fuel efficiency whilst reducing the motions, which is important for technicians who need quality rest to perform safe operations.

The TWIN X-STERN offers larger flexibility regarding the choice of propeller type, a bi-symmetric hull shape and propulsion setup with fewer propulsion units is possible.

Hybrid-powered, with green methanol as the primary source of energy

The hybrid power solution in these vessels, with green methanol intended as the main energy source, has dual-fuel engines supported by a battery package. The system integration allows the most fuel-efficient modes of operation. Combining the fuel-efficient TWIN X-STERN and the dual-fuel methanol/diesel power generators will help reduce the emissions in offshore wind farm operations.

Tomorrow's solutions for sustainable marine operations

“We as Tersan Shipyard have ensured a really good start of cooperation with Ulstein Design and gained an effective experience with the first two Acta Marine vessels. Ulstein’s innovative design solutions on Acta Marine vessels also correspond perfectly with the substantial experience of Tersan Shipyard among different kinds of vessels.” said Sakir Erdoğan, Tersan Shipyard Business Development and Marketing Director.

“We are excited to announce the order of two more Ulstein-designed SX216 SOVs," stated Rob Boer, Managing Director of Acta Marine. "These vessels represent the culmination of extensive research by Acta Marine in combination with Ulstein’s engineering excellence. With the vessel’s advanced features and cutting-edge technology, they will play a pivotal role in supporting the TK and Sofia projects for RWE, providing efficient and reliable services while minimizing environmental impact.”

“Ulstein's vision is to create tomorrow's solutions for sustainable marine operations. Through our dedication to innovation, application of expertise and commitment to quality, we give our customers added value. Acta Marine is strongly committed to reducing its carbon footprint, and these CSOVs fit in their timeline towards their goal of a 70 per cent reduction in net CO2 emissions. Achieving a low carbon or zero emission shipping industry in the future, we must act whilst in the design phase of the vessels," says Rolf-Petter Almli in Ulstein Design & Solutions AS.

"Therefore, we worked with Acta Marine to evaluate the best possible fuel alternatives. Methanol's energy density and storage are favourable, it is an accessible energy source, and dual-fuel engines that can handle both methanol and diesel are available in the market. As soon as methanol had been chosen as an alternative energy source, Ulstein Design & Solutions started to adapt the design, implementing the methanol bunkering, tank and system layouts on a conceptual level."

The ULSTEIN SX216 CSOV design

The offshore wind service vessel designs from Ulstein have been developed to effectively support the commissioning, operation and maintenance of offshore wind farms.

The SX216 vessel has a length of 89,9m, a beam of 19,2m and accommodates up to 135 POB. It has a walk-to-work (W2W) motion-compensated gangway for safe personnel transfer to the turbines, a 3D-motion-compensated crane for cargo transfer, and it can carry a daughter craft for in-farm transfers.

Ulstein was appointed Industrial Design Company of the Year 2022 due to its recent innovations to help decarbonise the maritime industry, of which the TWIN X-STERN is one.

Ulstein
 
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