Hey everyone I need to find out some info about these spikes, can they possibly be from a shipwreck? I have been searching info on them for a while now and cannot come up with any wrecks in the area, they measure 21” in length.
Most of the old iron or steel spikes/nails/bolts found along shorelines are from docks and buildings that have been consumed by the sea. There haven't been wooden ships for some time and plenty of wooden docks etc get washed into the sea every year and they drift all over the world depositing things like you have found on the shores of every country with coastline.