Aground is a term commonly used in seafaring to describe a situation where a boat or ship is resting on or touching the ground or bottom, rather than afloat. This can happen unintentionally when the boat is caught in shallow waters and is unable to navigate around rocks, sandbars, or other obstructions. In other cases, it can be done deliberately in a process known as "careening", where a ship is intentionally grounded in a harbor to inspect and repair the hull of the ship. This was a common practice in the age of sailing ships, before dry docks were invented - particularly with wooden vessels. Visitors to tidal shores can sometimes observe smaller boats resting aground at low tide, waiting for the next high tide to float and continue their journey. So whenever you're at a harbor and see some boats resting on the ground, you can impress your friends with this fun fact!