This custom designed wrench is purpose built to open Beckson Deck Plates, which are commonly installed on the Corsair-Farrier boats.

Most Corsair-Farrier multi-hull boats have Beckson style plates installed on the floats, which must be inspected regularly, or opened to retrieve gear and sailing equipment.  Which this special wrench in hand, you'll be able to quickly and easily unscrew the plate without worrying about your fingers slipping or not having enough leverage to open the hatch.