Hull potential measuring device and method

The invention discloses a hull potential measuring device and method, and the device comprises a potential measuring device which is connected with a reference electrode through an electric wire. The electrode protection device is fixed at the top end of the reference electrode and at least comprises an electrode protection frame and a plurality of electrode protection frame piles, a hole is formed in the center of the electrode protection frame, the top end of the reference electrode is fixed on the lower surface of the hole of the electrode protection frame, and the electrode protection frame piles are arranged on the periphery of the lower surface of the electrode protection frame at equal intervals. By arranging the electrode protection device, the measuring device has anti-collision performance, the electrode safety is guaranteed, the weight of the electrode end is effectively increased, and it is guaranteed that the electrode can fully enter water under the condition of heavy storm waves. By arranging t