A mooring is any permanent structure to which a vessel may be secured. A ship is secured to a mooring to forestall free movement of the ship on the water. An anchor mooring fixes a vessel's position relative to a point on the bottom of a waterway without connecting the vessel to shore.
A ship's tender, is a boat, used to service or support other boats or ships, generally by transporting people or supplies to and from shore or another ship. Smaller boats may also have tenders, usually called dinghies.