OPNAV FORM 3144-1 (9-64) 
0.1V7>d 1 ‘' 4 - ^100 
CONFIDENTIAL 
( /• C. /' /c 
uss 
DEPARTMENT OF THE NAVY 
SHIP WEATHER OBSERVATION SHEET 
V/ 
DATE (GMT) 
AT PASSAGE FROM 
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TABLE I 
J \.. 
TIME 
(GMT) 
WINDS 
^J 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 
(T rue) 
Force 
(K nots) 
Dry 
Bulb 
Wet 
Bulb 
Amount 
(T enths) 
Hei ght 
Type 
Direction 
(T rue) 
Per lod 
(Seconds) 
Hei ght 
(Feet) 
Direction 
(True) 
Per iod 
(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) 
1 
0 
Q. 
-C 
00 
0 
“D 
g; 
a> 
a. 
oO 
3-HOUR 
PRESSURE 
TENDENCY 
SIGNIFICANT CLOUD 
Oc¬ 
tant 
(0-3) 
(5-8) 
Latitude 
(Degrees 
and 
tenths) 
Longitude 
(Degrees 
and 
tenths) 
Direction 
(True) 
(00-36) 
Speed 
(True) 
(Knots) 
P resent 
(00-99) 
Past 
(0-9) 
Barometer 
Corrected 
(Mb) 
Amount of 
Low Cloud 
Type of C|_ 
(0-9) 
Height of 
Low Cloud 
U 
CL 0 
ys 
Type of C^ 
(0-9) 
Characteristic 
(0-8) 
Amount of 
Change 
(Mb and tenths/ 
Indicator 
Amount 
(Eights) 
CL 
>- 
h- 
Height 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
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 
TT 
Nh 
Cl 
h 
Cm 
Ch 
D 
S 
Vs 
a 
PP 
8 
N 
S 
C 
h h 
s s 
SHIP 
V 
/ 
3/7 
^27 
00 
4 
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0\ 
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/S 
4 
1 
h 
0 
0 
6 
V 
2 
10 
8 
4 
7 
¥0 
SHIP 
¥ 
1 
Jrr 
xii 
06 
z 
53 
j ^ 
9b 
20 
3 
733 
ri 
3 
4 
(0 
0 
p 
h 
4 
y 
l4 
8 
3 
6 
¥0 
SHIP 
Lj. 
1 
3JG 
ISF 
12 
36 
w 
id 
M 
5 
/43 
13 
s 
0 
0 
6 
H 
- ^ 
2 
H 
8 
6 
90 
SHIP 
4 
1 
3/1 
JJT 
18 
3X 
/S 
98 
20 
5 
203 
/5 
s 
6> 
0 
0 
4 
2 
8 
8 
7 
3S 
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 
i 
Thickness 
Rate 
Ind icator 
Kind 
Effect 
Bearing 
Distance 
Orientation 
28 
29 
30 
31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
41 
42 
43 
44 
45 
46 
47 
48 
0 
Ts T 3 
y y 
1 
d d 
W W 
P 
W 
H 
W 
1 
d d 
w w 
P 
W 
H 
W 
2 
1 
S 
Es Es 
R 
S 
ICE 
C 2 
K 
D. 
1 
r 
e 
0 
S6 
1 
1 
73 
2 
''Y 
2 
ICE 
0 
SB 
01 
1 
1 
3Z 
3 
2 . 
2 
ICE 
0 
01 
1 
1 
J! 
3 
2 
2 
ICE 
0 
S9, 
IS 
1 
1 
33 
2 
1 
2 
ICE 
DO NOT TRANSMIT 
Dry Bulb 
(Degrees 
and tenths) 
Wet Bulb 
(Degrees 
and tenths) 
Sea Water 
Temp. 
(Degrees 
and tenths) 
A 2 
^3 
Celsius 
Cels ius 
Celsius 
/¥ 7 
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//-7 ^ 
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72,7 
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7/T~ 
JZ.I 
)7.'i 
REMARKS 
EXAMINED 
USN, NAVIGATOR 
COWPIDEWTIAL 
