NOVELTY - A subsea apparatus (10) comprises monitoring station (18), input station, subsea solar panel, and voltage readout. The monitoring station is disposed on the subsea structure (12) so that the subsea structure can be monitored for parameter. The monitoring station has an electrical circuit. The input sensor monitors the subsea structure for the parameter and provides input signal to electrical circuit. The voltage readout displays the parameter as a function of voltage.    USE - A subsea apparatus for monitoring a subsea structure.    ADVANTAGE - The apparatus uses solar cells to energize electronic circuit incorporating node(s) with determinable circuit value or other parameter test station providing full time voltage readout powered by the lights. The apparatus provides improved monitoring of submerged cathodic protection systems. The solar power extends the life of the system by eliminating the need for internal batteries and thus reduces replacement cost of material and labor.    DETAILED DESCRIPTION - A subsea apparatus comprises monitoring station, input station, subsea solar panel, and voltage readout. The monitoring station is disposed on the subsea structure so that the subsea structure can be monitored for parameter. The monitoring station has an electrical circuit. The input sensor monitors the subsea structure for the parameter and provides input signal to electrical circuit. The voltage readout displays the parameter as a function of voltage. The electrical circuit converts the input signal to voltage for display by voltage readout. The subsea solar panel provides power to the electrical circuit. The solar panel receives light from artificial subsea source. The apparatus includes subsea buoyant unit, tether, and water-proof pressure housing. The pressure housing has retainer ring. The input sensor monitors for cathodic protection, temperature, flow rate, ground reference, and pressure. The voltage readout displays reference potentials, current density, and anode current. The monitoring station has solar panels, voltage readouts, input sensors, and units for electrical interconnection of input sensor to the electrical circuit.    DESCRIPTION OF DRAWING(S) - The drawing shows an schematic view of subsea apparatus.    Subsea apparatus (10)    Subsea structure (12)    Remotely operated vehicle (14)    Artificial light (16)    Monitoring station (18)