# Ocean Disturbances

In addition to wind waves, various disturbances can be added to the ocean surface. Version 1.1 supports Ripples, Swell, Height and Multiplier Grids Reflecting Walls, and Wakes. Disturbances are specified in the ocean file by first setting the `number_disturbances` to the number of desired disturbances. After this, you specify the how you want the region that is occupied by the disturbances to be rendered. This only effects the boat wake and the reflecting wall. The three options are `black`,`flat`, and `natural`. The `black` option renders these regions black, the `flat` option renders them as a flat ocean surface, and the `natural` renders them with the actual wave height inside the object. A sample section of the ocean input file for disturbances follows.

  `number_disturbances` `1`
  `render_disturbances flat`
  `...disturbance specific options ...`
  `end`

The disturbance specific options vary from disturbance to disturbance and are documented under each disturbances section.

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