# Aircraft Carrier Deck Signals

Part of the Signs, Signals, and Codes Merit Badge Digital Resource Guide: [Introduction & Overview](https://merit-badge.university/merit-badges/signs-signals-and-codes/guide/index.md)

*8. Specialized Signal Systems*

> **8c.** For this activity, demonstrate five aircraft carrier catapult crew signals. Tell what the signals mean and why they are used.

## The Most Dangerous Workplace in the World

An aircraft carrier flight deck is one of the noisiest, most dangerous work environments ever created. Jet engines run at full power just feet from crew members. Aircraft land at high speed on a deck that's pitching in open ocean. Massive catapults fling 50,000-pound aircraft to 165 mph in two seconds.

In this environment, radio chatter between deck crew is impossible. The noise level would drown it out instantly. Instead, the U.S. Navy's carrier flight deck operates on an intricately choreographed system of hand signals, body signals, and colored jersey assignments—every crew member knows their role and their signals exactly.

The deck crew wears color-coded jerseys that identify their specialty at a glance: yellow (aircraft handling officers, catapult/arresting gear), green (catapult crew, aircraft handlers), red (ordnance, crash crew), blue (aircraft directors and elevator operators), purple (fuel), brown (plane captains), and white (safety and medical).

## Five Key Carrier Deck Signals

The requirement specifies "catapult crew signals" specifically. The following are drawn from U.S. Navy catapult launch operations:

| Signal | How to Make It | Meaning | Why it's used |
|--------|---------------|---------|--------------|
| **Tension / take tension** | Point both index fingers forward at waist, pull toward body | Apply launch bar tension; aircraft ready to take tension on catapult | The catapult officer confirms the aircraft is aligned and ready for attachment; this is the beginning of the launch sequence |
| **Wipe out controls / final check** | Move arm in sweeping motion across front of body | Pilot: cycle all control surfaces for a final visual check | The catapult officer observes ailerons, elevator, and rudder moving to confirm all flight controls work before launch |
| **Run up engines** | Point index finger in a circle above head, then point in direction of takeoff | Bring engines to full power | Gives the pilot the signal to advance throttle to full military power before catapult release |
| **Two-finger salute (ready for launch)** | Pilot touches helmet with two fingers, salutes | "I am ready for launch" | The pilot communicates readiness to the shooter (catapult officer) without radio—this is the pilot's authorization signal |
| **Launch (firing)** | Touch deck, then sweep arm forward in a wide arc toward bow | Fire the catapult | The final launch signal—the catapult officer touches the deck (a ritual safety check), then sweeps the arm forward to signal the shooter to fire; the aircraft launches 0.5 seconds later |

Additional signals used in carrier flight operations:

| Signal | Meaning |
|--------|---------|
| Both fists crossed overhead | Emergency stop / abort launch |
| Raised closed fist | Hold; do not proceed |
| Point to aircraft, then taxi signal | Taxi to designated position |
| Thumb down | Lower aircraft on elevator |

## Demonstrating Your Five Signals

1. Practice the arm motions until they look confident and deliberate—carrier deck signals need to be unambiguous at 30 feet.
2. For each signal: describe the scenario on the flight deck, make the signal clearly, state what it means, and explain why radio communication isn't an option in that moment.
3. Knowing the color-jersey system helps give your explanation context—mention it when explaining why the crew is close enough to signal but can't speak.

> **Did You Know?**
>
> The catapult officer on a U.S. Navy carrier—known as the "shooter"—is the person who physically triggers the catapult launch. That single arm-sweep forward sends a pilot hurtling off the bow at takeoff speed. It's one of the most choreographed signal moments in military operations.

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