SNFO/SWSO VOICE COMMUNICATIONS
Using only the last two digits (minutes) when expressing time. When two numbers are
used, the current hour is understood to be the time being referenced, and the two stated digits
signify the minutes.
"Center, KATT 815 estimating Semmes TACAN
at time FOUR THREE."
"Four Three" is understood to mean 43 minutes past the current hour. If the call was made
at 0935 on your watch, KATT 815 will arrive at Semmes at 0943.
Current time in use at a station may be stated to the nearest quarter minute in order to
facilitate time checks or to set their clocks. Standard phrases include: straight up (00 sec), one
quarter (15 sec), one half (30 sec), and three quarters (45 sec). The only reference to this type of
time reference will be during shipboard operations.
"KATT 805, Approach, hold as published, expect
further clearance at time 0945, time now 0929 and
1. Digits indicating hundreds and thousands in round numbers up to 9999, such as ceiling
heights, shall be spoken as follows:
FOUR THOUSAND FIVE HUNDRED
2. Numbers above 9999 shall be spoken by separating the digits preceding the word
ONE ZERO THOUSAND
ONE THREE THOUSAND FOUR HUNDRED
All other numbers shall be transmitted by pronouncing each digit.
TECHNIQUE AND TERMINOLOGY 1-5