Which individual is credited by some historical accounts with the addition of the second prong (fluke) to the anchor design?

Answer

Anacharsis

The addition of a second prong to create the two-pronged design ($ ext{ἀμϕἱβολοι}$) is ascribed either to Eupalamus or alternatively to the Scythian philosopher Anacharsis.

Which individual is credited by some historical accounts with the addition of the second prong (fluke) to the anchor design?
inventiondeviceshipcreatoranchor