Calculators
Author of calculators for shipboard and offshore electrical installations. Figures are indicative — always verify against the applicable class rules and standards for a real installation.
DC voltage drop
Voltage drop on a DC cable run given current, length, cross-section.
AC voltage drop, 1-phase
Single-phase AC voltage drop including cos(φ).
AC voltage drop, 3-phase
Three-phase AC voltage drop including cos(φ).
Power / current converter
Convert between three-phase power and line current.
Cable current rating
Continuous current rating of a ship's cable with ambient, duty-cycle and grouping correction factors.
Battery room ventilation
Required air flow and vent duct sizing for a lead-acid battery compartment.
Starting battery selection
Reference formulas per PN-W-89509:1997 for starting battery capacity and feeder cable cross-section.
Service battery capacity
Reference formula per PN-W-89509:1997 for service battery capacity.