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South Boats IOW are pleased to present a selection of unique vessels for hire that are perfect for personal occasions and corporate events. Our centrally heated all weather vessels are ideal for every event from private transfers to special events and festivals. Whether you’re looking to explore the seas, provide race support, entertain some corporate/VIP guests, go fishing or diving we would welcome the opportunity to discuss your specific requirements. Take in the splendid beauty of the south of the UK and the Solent as you travel in comfort on board one of our boats, South Boats IOW look forward to welcoming you on board.

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Island Phoenix

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South Boats IOW 13m

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Fortress 1

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Alicat 20m

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Gardian 14

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Alicat 20m

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R&D Innovation

Project Title

Open Water & Tank Model Testing to Compare Wind Farm Service Vessel Hull Form Performance Against Prevailing Conditions.

Assignment

To characterise the performance of different fast work boat multi-hull designs, from 15m to 40m in length, defining the performance benefits and drawbacks of each hull design approach.

Approach
  • Six hull forms were selected designs included existing industry standard forms and a number of new, novel design proposals.
  • Physical models were constructed and tank tested, comparing their calm and head sea rough water performance over a range of speeds, displacements, trims and hull separations.
  • The performance of the models when manoeuvring on a wind turbine tower was investigated over different sea conditions, tidal rates, thrust levels and fender arrangements.
  • Tank testing also investigated added resistance in waves, the effect of freeboard and hull form on slamming and deck wetness and the ability of each design to carry a significant cargo load on the foredeck.
  • Various hull appendages were investigated, including bilge keels, hull foils, active/passive fins and interceptors, in order to assess their effect on motion damping and powering performance.
 
  • Physical models were then adapted for free running, open water testing - providing for the most realistic operational assessment possible.
  • These fully instrumented models were run in measured open sea conditions over a range of significant wave heights and at both transit and loiter speeds.
  • In parallel to this hydrodynamic research programme, instrumented sea trials of new build vessels undertaken prior to delivery and the performance monitoring of vessels in service has provided a unique opportunity to correlate theoretical, test and trials data.
  • Personnel safety and comfort were considered in detail with assessments of sea-sickness, whole body vibration and the safety of operational personnel working on the vessel.
Highlights
  • The physical models built for free running, open water testing were equipped with propeller and water jet propulsion systems, appendages and superstructures.
  • Data-loggers and cameras on the models recorded the vessel's onboard characteristics, including the control inputs from the remote helmsmen.
  • Long fast runs at different headings, impossible in the confines of conventional research facilities, allowed good statistical data to be logged.
 
  • The physical models built for free running, open water testing were equipped with propeller and water jet propulsion systems, appendages and superstructures.
  • Data-loggers and cameras on the models recorded the vessel's onboard characteristics, including the control inputs from the remote helmsmen.
  • Long fast runs at different headings, impossible in the confines of conventional research facilities, allowed good statistical data to be logged.
Outcomes
  • The results of this breakthrough research project provide a significant advance in the understanding of the design of small fast workboats for wind farm support activities.
  • Analysed by an assessment team comprising naval architects, skippers and operators, the research programme has been directed at minimising risk in the provision of these specialist vessels to customers.
 
  • This research provides the unique ability to predict the likely performance, operational availability and fuel economy of these hull designs for particular sea areas, routes and tasks - reducing the risk of selecting an inappropriate vessel for a given task.
  • This significant database provides the basis for the development of the next generation of fast offshore work boats and wind farm service vessels.