C-Odyssey extends scope of Leask Marine
C-Odyssey exceeded contract specification for both bollard pull and speed.
Scotland’s Leask Marine Ltd has taken delivery of C-Odyssey, an innovative 26m LOA ‘Multiworker’ designed and built by Marine Development Holland (MDH), which produces a range of workboats at its facility in the Port of Rotterdam.
Based at Kirkwall in Orkney, Leask Marine was established as a commercial diving company in 1985, growing to provide an additional workboat charter facility in support of a comprehensive range of commercial diving services. The company has supplied dive teams and workboats for marine renewable energy projects in Orkney since they first began in 2003, undertaking works such as cable laying, cable maintenance, site investigation, prototype structure installation, and even salvage recovery of a 75 ton piling frame.
Marine Development Holland has a range of its own original designed workboats from 8.5m up to the current 26M. Vessels are a standard platform that can be easily adapted to the customer’s wishes. The model Twenty6 supplied to Leask Marine is a larger version of the existing 22m version.
When Douglas Leask of Leask Marine requested a quote for a larger and very specific version of the Multiworker Twenty6 in 2010, MDH we designed a ‘custom’ version for him. He set very specific requirements with regard to performance and technical standard which MDH, together with den Breejen Shipyard BV in Hardinxveld-Giessendam, set out to design and build within only six months.
The vessel had to be able to lift 120 tons over the bow and is equipped with two 60 ton Kraayeveld anchor handling and towing winches, two 15 ton tugger winches, and towing hooks on the bow and stern. The specification called for a minimum 24 tons bollard pull, minimum speed of 8 knots and full accommodation for six persons. One Promac HS 185 t/m crane with 18.5m reach and a second Promac HS 65 t/m crane with 10.5m reach give the craft more than sufficient lifting capacity for the works it will undertake.
Twin Caterpillar C32 main engines provide a total of 2,400 bhp at 1,800 rpm driving 1,500mm diameter fixed pitch propellers in nozzles exceed specification, providing 26 tons bollard pull and 10 knots speed. On board power also includes two Caterpillar 215 kVA gensets and a 15 kVA harbour set. With the comfort of crew and passengers a major consideration, careful design has resulted in an exceptionally low noise level of only 54Db in the accommodation at 1,700 rpm.
There is ample space on deck for containers as well as tools and diving equipment, as the vessel takes on marine renewable support, dive, support, towing and anchor handling duties amongst others. C-Odyssey is classed by Lloyds and MCA Workboat Class 1, able to operate up to 150 miles from safe haven with up to 10 passengers plus crew.
The off set wheel house has been designed for optimal viewing onto the deck and all around the vessel and is cleverly designed to provide seating for five people. The throttle and steering are integrated in the Captain’s chair and also there is a second steering/throttle position on the winches control dashboard.
Another challenge to be addressed was that the hull must provide better seakeeping than other vessels of this type. Leask also asked for manoeuvrability and handling in rough weather to be on a new level, o the designed shape of the hull is very different to other similar vessels.
A new bow and stern design which is asymmetrical created buoyancy to lift 120 tons over the bow. A stern roller enables 60 tons to be lifted over the stern. C-Odyssey can accommodate a10 t/m deck load, which is exceptionally strong for this type of vessel. A newly designed ballast system takes offshore knowledge into this vessel. A massive 130 tons of ballast can be distributed very quickly to all ballast tanks wherever needed. A low point of gravity enhances comfort in high seas, as been proven during sea trials in heavy weather.
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