A Preliminary Standard Series for a Modern Semi-Displacement Hull

    Project Details

    Academic description

    The optimal type of hull form of a vessel is very dependent on the ratio of the vessel’s speed to the vessel’s size. For many leisure vessels, working vessels and smaller superyachts the combination of vessel speed and size means that the optimal type of hull form is a semidisplacement hull form, which sits between the traditional displacement hull form and planing hull form, both of which have been the subject of extensive studies. The academic approach to measuring and communicating the hydrodynamic resistance characteristics of boats and ships is to undertake a set of towing tank tests on scale models, with each scale model having a small geometric variation to allow the development of a database of resistance changes with geometry changes from a “parent” hull form. This is referred to as a “systematic series”. Over the past 60 years there have been some studies on the hydrodynamic resistance characteristics of semidisplacement hulls, with the data presented as systematic series. However, with the development of modern hull forms to provide vessels with greater beam and interior accommodation, and hull forms with sufficient weight carrying capacity for hybrid systems, there is a distinct lack of data that the industry can use to optimise the form of small, semi-displacement vessels. This project proposes the construction of three towing tank models with a suitable modern form, to be tested to evaluate hydrodynamic resistance (and hence power requirements) and dynamic trim and heave effects. The impact of resistance reducing devices such as trim tabs will be included. The three models will provide a small but useful dataset (the “Solent Series”) that can be expanded with further studies. The data will be very useful to industry, and will form the basis for further studies on drag reduction devices to assist the industry to decarbonise and reduce energy use.
    StatusFinished
    Effective start/end date14/11/2231/07/23

    Funding

    • Solent University

    UN Sustainable Development Goals

    In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

    • SDG 13 - Climate Action

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