test_SailPolar::makeShipPolar(); works, not optimal, not cleaned
test_SailPolar::makeShipPolar(); works, not optimal, not cleaned

ProkopHapala/SimpleSimulationEngine,ProkopHapala/SimpleSimulationEngine,ProkopHapala/SimpleSimulationEngine,ProkopHapala/SimpleSimulationEngine,ProkopHapala/SimpleSimulationEngine,ProkopHapala/SimpleSimulationEngine,ProkopHapala/SimpleSimulationEngine