PRS also offers its own calculators which can be useful for ship design, construction, operation and repairs. The calculators are available on the link below, as well as on the sub-page Research and Development, the bookmark Calculators.

Selection of starting accumulator batteries
Selection of service accumulator batteries
Calculation of ventilation of accumulator batteries compartments and boxes
Voltage drop - selection of cable in DC network
Voltage drop, 1-phase AC
Voltage drop, 3-phase AC
Electric power and current calculator for 3-phase network