The Inertia Contributions Due to Floodwater Mass

Abstract

The Stability in Waves committee of the 27th ITTC investigated how to deal with the inertia due to floodwater mass from three points of view: (1) floodwater domain, (2) floodwater inertia itself, (3) floodwater entering ship. The committee suggested three criteria indicating the concept of how to deal with floodwater and providing clues on what to consider as floodwater when examining damage ships: (1) whether the water is moving with the ship or not, and amount of that water, (2) whether there is a significant pressure jump across the compartment boundary or not, (3) whether the dynamics of water can be solved separately or not. For floodwater inertia, the committee divided this into the partially flooded case and fully flooded case, and investigated the properties and showed how to deal with floodwater inertia for each case. For the case of the floodwater entering ship, the treatment of inertia change due to floodwater was made clear using the momentum change principle. The related procedure was updated reflecting this work. ？ 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.