Passive anchor latch

A passive anchor latching mechanism which allows its user to attach a mooring line to an anchor without using a secondary mechanism such as a remotely operated vehicle to attach the cable or anchor wire to the anchor. The passive anchor latching mechanism comprises three elements: (1) a latch ring which may have a tether line removably coupled thereto; (2) an anchor post extending vertically upward from the top of the anchor; and (3) a crown line attached to the anchor and buoyed at the water's surface. The latch ring consist of a tail which attaches to the mooring line and a ring which slides downward along the crown line. The anchor post has an anchor collar coupled thereto which forms an annulus groove with the anchor post. The annulus grove latches the ring of the latch ring to the anchor post while the tail of the latch ring prevents the ring from detaching from the anchor post and riding backward up the anchor post once the latch ring is latched.