DEPARTMENT OF THE NAVY 
TABLE 
TIME 
(GMT) 
WINDS 
1 V IF ESTIMATED 
VISI- 
BIL- 
ITY 
(Miles) 
WEATHER 
(Symbols) 
BAROMETER 
(Inches) 
TEMPERATURE 
(Degrees and tenths) 
CLOUDS 
SEA 
WATER 
TEMP. 
(Degrees 
and 
tenths) 
SEA WAVES 
SWELL WAVES 
Direction 
(True) 
Force 
(K not s) 
Dry 
Bulb 
Wet 
Bulb 
Amount 
(Tenths) 
He i ght 
Type 
Direction 
(T rue) 
Per iod 
(Seconds) 
Hei ght 
(Feet) 
D irect i on 
(True) 
P eriod 
(Seconds) 
Height 
(Feet) 
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TABLE II 
SYNOPTIC OBSERVATIONS 
FIRST GROUP 
OF 
MESSAGE 
Day 
of 
Week 
(1-7) 
(GMT) 
POSITION OF SHIP 
TIME 
(GMT) 
T ota 1 
Cloud 
Amt. 
(Coded) 
WIND 
Visi¬ 
bil¬ 
ity 
(90-99) 
WEATHER 
PRESSURE 
AIR 
TEMP. 
(°C) 
CLOUDS 
Course of Ship (0-9) 
Speed of Ship (0-9) 
3-HOUR 
PRESSURE 
TENDENCY 
SIGNIFICANT C 
:loud 1 
Oc¬ 
tant 
(0-3) 
(5-8) 
Latitude 
(Degrees 
and 
tenths) 
Long itude 
(Degrees 
and 
tenths) 
Direction 
(True) 
(00-36) 
speed 
(T rue) 
(Knots) 
Present 
(00-99) 
Past 
(0-9) 
Barometer 
Corrected 
(Mb) 
Amount of 
Low Cloud 
-J 
U 
0 
0 ^ 
CL 0 
t^-o 
Height of 
Low Cloud 
Type of 
(0-9) 
X 
u 
'~o 
0 ^ 
a. 0 
t^S 
Characteristic 
. M 
Amount of 
Change 
(Mb and tenths; 
Indicator 
Amount 
(E ights) 
0 ) 
a. 
>- 
1 — 
He i ght 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
II 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
Y 
Q 
L L L 
a a a 
L L L 
000 
GG 
N 
dd 
ff 
VV 
ww 
W 
PPP 
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D 
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Vs 
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h h 
s s 
SHIP 
! 
1 
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231 
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8 
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^0 
SHIP 
-J_ 
/ 
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330 
273 
18 
0 
3G 
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797 
01 
i 
/17 
n 
G 
J 
5 
0 
0 
£ 
t 
2 
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8 
G 
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