It would have to be some very small vessel. The thing cant be more tha a few inches long.Looks to be a conventional stockless anchor that was modified to allow for easy retrieval. Possibly for kedging, moving a vessel by hauling back on an anchor. Some landing craft used to drop a kedging anchor before beaching to assist in getting off the beach.
The other anchor is actually called a plow anchor and is very effective holding in soft bottoms.
Kevin
It's a teaching aid I tell ya!
