Anchors are objects used to moor a vessel in place, typically by attaching it to the seabed. The term 'Aweigh' is used to describe when an anchor has been lifted off the seabed and is no longer holding the vessel in place. 'MOORS' is another term for anchors, while 'PfnsH' is an acronym for Permanent Foundation Nail Shackle, which is a type of anchor used in shallow water. Finally, 'Kedges' are small anchors used to hold a vessel in place temporarily.