# VehicleWaterRudder

> Talos next · Since 0.7

A rudder: a side force at its point, growing with the square of the speed through the water.

It steers nothing at rest.

## Fields

| Field | Type | Required | Default | Allowed values | Description |
|---|---|---|---|---|---|
| `position` | `Vec3` | yes |  |  | The rudder, in the body's local space, metres before scale: behind the centre of mass. |
| `lift` | `number` | no | `300` |  | Side force per (m/s)² of speed through the water per radian of rudder, N·s²/m²/rad, 0 or more. Defaults to 300. |
| `maxAngle` | `number` | no | `0` |  | Rudder angle at full steer, RADIANS, greater than zero and under 1.5. Defaults to 0.6. |
| `size` | `number` | no | `0` |  | Height of its wet band, metres, greater than zero. Defaults to 0.3. |

## See also

- `Vec3`