PURPOSE: A layered photovoltaic module applying a detachable power cable is provided to minimize fuel consumption for operating a ship by stably constructing a ship power system using sunlight. CONSTITUTION: A power cable(5) is connected between a photovoltaic module(1) and a power converting device(3) with an outlet(6) and a plug(7). The photovoltaic modules are mutually connected with the outlet and the plug. A support stand is composed of layered sliding rails. The photovoltaic module is attached to or detached from the support stand. The support stand is attached to or detached from a cargo space of a ship.
