Numerical Signals in underwater signaling

Numerical Signals

In underwater signaling, it is often necessary to be able to convey numerical information clearly and rapidly. The following signs are the digits from 0 through 9:

ZERO-Bend all of the fingers into a half circle, holding them together. Complete the circle by touching the tip of the thumb to the tip of the middle and index fingers. (Fig. 7.)

ONE-Extend the index finger. Fold the other 3 fingers lightly into the palm and lay the thumb across the middle finger. (Fig. 8.)

Fig. 1. Hold everything

Fig. 2. I am having trouble with my ear

Fig. 3. All right or All right?

Fig. 4. Let’s go up

Fig. 5. Pick me up

Fig. 6. Pick me up now

Fig. 7. Sign for 0

Fig. 8. Sign for 1

Fig. 9. Sign for 2

Fig. 10. Sign for 3

Fig. 11. Sign for 4

Fig. 12. Sign for 5

Fig. 13. Sign for 6

Fig. 14. Sign for 7

Fig. 15. Sign for 8

Fig. 16. Sign for 9

Fig. 17. How deep?

Fig. 18. What direction? or The time is

Fig. 19. What time? or Compass course?degrees

TWO-Extend the index and middle fingers, separating them somewhat. Fold the other 2 fingers lightly into the palm and lay the thumb across the ring finger. (Fig. 9.)

THREE-Extend the index and middle fingers and the thumb, separating them somewhat. Fold the other 2 fingers down at the knuckle. (Fig. 10.)

FOUR-Extend all 4 fingers, separating them somewhat. Lay the thumb across the palm to touch the base of the little finger. (Fig. 11.)

FIVE-Extend all 4 fingers and the thumb, separating them slightly. (Fig. 12.)

six-Hold the nail of the little finger with the thumb. Extend the other fingers, separating them slightly. (Fig. 13.)

SEVEN-Hold the nail of the ring finger with the thumb. Extend the other fingers, separating them slightly. (Fig. 14.)

EIGHT-Hold the nail of the middle finger with the thumb. Extend the other fingers, separating them slightly. (Fig. 15.)

NINE-Hold the nail of the index finger with the thumb. Extend the other fingers, separating them slightly. (Fig. 16.)

To indicate a number larger than 9, give the individual digits of the number in the order that you would write them from left to right. For example to say “The time is 1435″ (use the military time system), you would tap your wrist and give the signs for 1, 4, 3, and 5 in that order.

Other Signals

Certain other signs are valuable for conveying basic information:
HOW DEEP? or DEPTH??FEET.-Extend one arm to the side,
holding the hand palm down. Swing the forearm horizontally back and forth about 60 degrees. (Fig. 17.)
WHAT DIRECTION? or COMPASS COURSE??DEGREES.
-Close the hand and extend the thumb. Twist the hand about the wrist to the right and left several times. When signaling the compass course, always give it as a 3-digit number. For example, to say “Compass course 045,” make the sign for compass course, followed by the digits 0, 4, and 5. (Fig. 18.)
WHAT TIME? or THE TIME is??.-Crook the index finger of
one hand and tap it several times on the back of the other hand at the wrist. When signaling the time of day, always give it as a 4-digit number. (Fig. 19.)

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