In naval fire-control, which factors are combined to compute the lead angle for a moving target?

In naval fire-control, which factors are combined to compute the lead angle for a moving target?

• A. Target motion, own motion, relative bearing/range, wind, and muzzle velocity.
• B. Target motion only.
• C. Relative bearing and range, wind, and muzzle velocity.
• D. Weather conditions and crew readiness only.

Answer: (C)

Lead angle is found by predicting where the target will be when the shell arrives, using the current geometry and ballistic factors. You need the relative bearing and range to define where the target is relative to your ship, the muzzle velocity to determine how long the shell will be in flight, and wind to account for any crosswind drift. With these inputs, the fire-control solution trims the aim so the shell intercepts the target’s future position. The own ship’s motion is effectively already accounted for in the relative geometry, so it isn’t treated as a separate input. Weather and crew readiness don’t directly determine the lead angle itself, though they can influence overall firing conditions and timing.

Lead angle is found by predicting where the target will be when the shell arrives, using the current geometry and ballistic factors. You need the relative bearing and range to define where the target is relative to your ship, the muzzle velocity to determine how long the shell will be in flight, and wind to account for any crosswind drift. With these inputs, the fire-control solution trims the aim so the shell intercepts the target’s future position.

The own ship’s motion is effectively already accounted for in the relative geometry, so it isn’t treated as a separate input. Weather and crew readiness don’t directly determine the lead angle itself, though they can influence overall firing conditions and timing.