Source: Eberron - Rising from the Last War

Wondrous item, uncommon

When mounted at the helm of an elemental galleon or airship, this wheel allows a creature that possesses the Mark of Storm to telepathically control the elemental bound inside the vessel.

If a wheel of wind and water is mounted on a mundane sailing ship, a creature with the Mark of Storm who is using the wheel can create an area of ideal conditions around the vessel, increasing its speed by 5 miles per hour.