This entity is used to define a region of water. Wave properties and Current properties are specified in the water entity. This entity requires a parent body. The default shape is cubic and you can change the shape by assigning specific parameters.

Wave supports four types of wave shape, which are Still, Sine, Pierson-Moskowitz and User-defined. Additionally, Wave supports a preview plot for each type of wave shape. Current can be defined in two directions (X and Y directions) with respect to the water reference frame.