OPNAV FORM 3144-1 (9-64) 
0107-714-4100 
DEPARTMENT OF THE NAVY 
SHIP WEATHER OBSERVATION SHEET 
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TABLE I 
TIME 
(GMT) 
WINDS 
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 
(Knots) 
Dry 
Bulb 
Wet 
&ulb 
Amount 
(Tenths) 
He i ght 
Type 
Direction 
(True) 
Period 
(Seconds) 
Height 
(Feet) 
D irect ton 
(T rue) 
P er iod 
(Seconds) 
--j 
Height 
(Feet) 
00 
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TABLE II 
SYNOPTIC OBSERVATIONS 
FIRST GROUP 
OF 
MESSAGE 
Day 
of 
Week 
(1-7) 
(GMT) 
POSITION OF SHIP 
TIME 
(GMT) 
T otal 
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 CLOUD 
Oc¬ 
tant 
(0-3) 
(5-8) 
L a tit ud e 
(Degrees 
and 
tenths) 
Longitude 
(Degrees 
and 
te nth s) 
Direction 
(True) 
(00-36) 
Speed 
(True) 
(Knots) 
Present 
(00-99) 
Past 
(0-9) 
Barometer 
Corrected 
(Mb) 
Amount of 
Low Cloud 
Type of C L 
(0-9) 
Height of 
Low Cloud 
u 
"o 
<v * 
Cl. O 
is 
X 
u 
T 
c/ 
is 
U 
£ 
u 
o __ 
O CO 
6s 
Amount of 
Change 
(Mb and tenths) 
-1 
Indicator 
Amount 
(Eights) 
Type 
Height 
_I 
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 
j n a 
L L L 
o o o 
GG 
N 
dd 
ff 
VV 
ww 
W 
ppp 
TT 
N h 
c L 
h 
C M 
Ch 
D 
S 
V 
S 
a 
PP 
8 
— 
N 
S 
— 
C 
h h 
s s 
SHIP 
00 
8 
— 
SHIP 
06 
8 
SHIP 
12 
8 
SHIP 
18 
8 
Indicator 
AIR- 
SEA 
DIFF. 
(Coded) 
DEW 
POINT 
(°C) 
SEA WAVES 
SWELL WAVES 
ICE ACCRETION 
SEA ICE 
Indicator 
Direction 
(Coded) 
Period 
(Coded) 
Height 
(Coded) 
Indicator 
U 
Direction 
(Coded) 
Period 
(Coded) 
Height 
(Coded) 
Indicator 
Source 
Thickness 
Rate 
Ind icator 
“O 
C 
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 
T s T s 
T d T d 
1 
d d 
W W 
P 
W 
H 
W 
1 
d d 
W W 
P 
W 
H 
W 
2 
1 
S 
m 
(A 
m 
M 
R 
S 
ICE 
c 2 
K 
D 
C 
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 
(Degree s 
and tenths) 
Wet Bulb 
(Degrees 
and tenths) 
Sea Water 
Temp. 
(Degrees 
and tenths 1 
A 1 
a 2 
A 3 
Celsius 
Celsius 
Celsius 
• 
J 
REMARKS 
EXAMINED 
USN, NAVIGATOR 
