OPNA V FORM 3U4-1 (9-64) 
0 107-7 1 4*4 1QO 
DEPARTMENT OF THE NAVY 
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SHIP WEATHER OBSERVATION SHEET 
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DATE (GMT) 
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TABLE I 
TIME 
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VISI* 
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IT Y 
(Miles) 
WEATHER 
(Symbols) 
BAROMETER 
(Inches) 
TEMPERATURE 
(Degrees ond tenths) 
CLOUDS 
SEA 
WATER 
TEMP. 
(Degrees 
and 
tenths) 
SEA WAVES 
SWELL WAVES 
Dry 
Bulb 
Wet 
Bulb 
Amount 
(Tenths) 
Hei ght 
Type 
D irection 
(True) 
Force 
(Knots! 
Direct ion 
(True) 
Per ,od 
(Seconds) 
Height 
(Feet) 
Direction 
(True) 
Period 
(Second s ) 
Height 
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TABLE II 
SYNOPTIC OBSERVATIONS 
FIRST GROUP 
OF 
MESSAGE 
Day 
of 
Week 
(1-7) 
(GMT) 
POSITION OF SHIP 
T ota 1 
Cloud 
Amt. 
(Coded 1 
WIND 
Visi¬ 
bil¬ 
ity 
(90-99) 
WEATHER 
PRESSURE 
AIR 
TEMP. 
(°C) 
CLOUDS 
Course of Ship (0-9) 
Speed of Ship (0-9) 
3- 
PRf 
TEN 
HOUR 
ESSURE 
DENCY 
| 
SIGNIFICANT CLOUD 
Oc¬ 
tant 
(0-3) 
(5-8) 
Latitude 
(Degrees 
and 
tenths) 
Longitude 
(Degrees 
and 
tenths) 
TIME 
(GMT) 
Direction 
(True) 
(00-36) 
Speed 
(True) 
(Knots) 
P resent 
(00-99) 
Past 
(0-9) 
B arometer 
Corrected 
(Mb) 
“O 
° § 
1 u 
2 * 
E o 
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Jl cn 
tZo 
TD 
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2 
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1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
n 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
— 1 
27 
Y 
Q 
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a n a 
L L L 
o o o 
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VV 
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PPP 
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SHIP 
00 
— 
— 
8 
SHIP 
06 
8 
— 
SHIP 
12 
8 
SHIP 
18 
— 
8 
— 
1 
Indicator 
AIR- 
SEA 
DIFF. 
(Coded) 
DEW 
POINT 
(°C) 
SEA WAVES 
SWELL WAVES 
ICE ACCRETION 
SEA ICE 
Indicator 
Direction 
(Coded) 
Period 
(Coded) 
Height 
(Coded) 
Indicator 
Direction 
(Coded) 
Period 
(Coded) 
Height 
(Coded) 
Indicator 
Source 
Thickness 
Rate 
Indicator 
Kind 
Effect 
Bearing 
Distance 
c 
o 
o 
£ 
<§ 
28 
29 
30 
31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
41 
42 
43 
44 
45 
46 
47 
48 
0 
T s T s 
T d 
1 
d d 
W W 
P 
W 
"w 
1 
d d 
W W 
P 
W 
H 
2 
1 
S 
Es E s 
R 
S 
ICE 
c 2 
K 
Di 
r 
e 
0 
1 
1 
2 
ICE 
0 
1 
1 
2 
ICE 
0 
1 
1 
2 
ICE 
0 
1 
1 
2 
ICE 
: 
DO NOT TRANSMIT 
Dry Bulb 
(Degrees 
and tenths) 
Wet Bulb 
(Degrees 
and tenths 
Sea Water 
Temp. 
Degrees 
and tenths 
A 1 
A 2 
a 3 ^ 
Celsius 
Cels ius 
Celsius 
REMARKS 
EXAMINED 
USN, NAVIGATOR 
