An inverter for supplying electric energy from a DC source to an AC grid includes a housing in which electrical and electronic components are accommodated. The disc rotates around a rotating axis and has slits that are formed circumferentially at given intervals. Ports can be aggregated synchronously to allow consistent generation of port channel map tables. The position information displayed by the GPS receiver enables the diver to navigate to and from the various locations or geographical coordinates while submerged. An automotive-style handle and locking mechanism is mounted to the housing.