Multi-role support vessel: design specifics

Object and purpose of research. This paper discusses a multi-role support vessel working as a supply ship, a tug and an anchor handler. The purpose of the study was to obtain an optimal design that could be of interest for potential customers, like oil and gas companies and offshore fleet operators. Materials and methods. The paper describes design peculiarities of multi-role support vessels, methodological approach to justification of main design solutions and principal results of these justifications in terms of selecting main dimensions, lines and structures for hull, architecture and arrangement of main equipment, propulsion system components, etc. It also describes model tests undertaken as part of this project in order to obtain high propulsion, seakeeping, maneuverability and ice performance parameters. The study outlines technical solutions adopted to widen the ship’s functionality, i.e. modular payloads and detachable equipment. Main results. As part of Russian State Program Development of offshore shipbuilding and technology for the years 2013-2030, Krylov State Research Centre completed a design of multi-role support vessel. This work was performed in two stages. The first stage was intended to develop the technical proposal (further transformed into the Technical Assignment for Detailed Design) and to justify principal design solutions with participation of possible customers. The second stage was dedicated to model tests, update of design solutions and detailed design development of multi-purpose support vessel in the scope sufficient to obtain the approval from Russian Maritime Register of Shipping. Conclusion. This multi-role support vessel is intended as a baseline variant for further modifications to the needs of the customers (oil and gas companies and offshore operators) which will enable its large-batch construction and eventually reduce lead ship construction costs, as well as make this ship a good replacement for the fleet of foreign service companies currently contracted for support of oil and gas facilities in Russian offshore areas.