There are very few grid connections on the seas and inland waters as well as along their banks. People living on inland waterway crafts, houseboats, sailing boats and space stations are dependent on batteries just like the owners of electrically propelled boats. But batteries sometimes discharge and need to be recharged. In this scenario, solar photovoltaic system may be one of the significant solutions. On a ship, solar panels can charge the batteries on the spot effectively utilizing free energy from the sun without polluting environment.
Electric motors are used in submarines and cruise ships for the momentum. Large passenger liners, aiming to provide maximum comfort of traveling, do not however store their energy in batteries but produce it by using many small diesel generators. They create noise and are not environmentally friendly technology. On the other hand, solar photovoltaic system generates electric power without any noise and environment pollution. This technology is reliable and durable.