# VehicleWaterKeel

> Talos 0.7 · Since 0.7

A keel: resistance to sliding sideways through the water, so the hull carves a turn instead of skidding, and optionally to heaving up and down.

## Fields

| Field | Type | Required | Default | Allowed values | Description |
|---|---|---|---|---|---|
| `position` | `Vec3` | no |  |  | The centre of lateral resistance, in the body's local space, metres before scale. Absent: the middle of the chassis collider's bottom face. |
| `lateral` | `number` | no | `400` |  | Resistance per (m/s)² of sideways speed through the water, N·s²/m², 0 or more. Defaults to 400. |
| `heave` | `number` | no | `0` |  | Resistance to the hull moving up and down through the water, N·s/m, 0 or more: what stops a hull bobbing on after a wave or a landing. Defaults to 0. |
| `size` | `number` | no | `0` |  | Height of its wet band, metres, greater than zero. Defaults to 0.3. |

## See also

- `Vec3`