1. Design and use purpose: The storm cabin is specially designed to cope with severe weather conditions such as heavy wind and waves, and the influence of wind and waves is reduced by increasing the draft and displacement of the ship. Ballast tanks are mainly used to adjust the center of gravity, buoyancy and stability of ships, so as to solve the problem of insufficient stability or inappropriate draft caused by oil-water consumption and rising center of gravity.

2. Function: If it is predicted that the storm cabin will be attacked by heavy wind and waves during ocean-going no-load navigation, it can be considered to use the storm cabin for ballast to increase the draft of the ship. However, during the operation of the ship, due to the consumption of fuel and the change of cargo, the draft and trim of the ship have changed, which further affects the navigation performance of the ship. At this time, by adjusting the ballast water volume in the ballast tank, the influence caused by the change of the ship-borne articles in operation can be adjusted in time.