RANGE SECTION OPERATOR. COAST ARTILLERY (724)
Plotter
Acts as member of a plotting team, performing various duties in connection with determination of firing data for seacoast artillery guns of various calibers.
Calculates and plots uncorrected range and azimuth on a mechanical plotting board.
Measures distance between plotted points and calculates set forward point using a special slide rule to determine point at which target should be when projectile lands.
Calculates correct range and deflection for non-standard ballistic conditions and relays correct data to guns for firing.