To prepare and issue such publications as may be necessary for the
if
to
arrange,
and
at
sea
efficient conduct of meteorological work
daily
for
of
available
the
making
and
publication
practicable,
weather charts for the information of departing ships.
(iv) To arrange for selected ships to be equipped with tested instruments
(such as a barometer, a barograph, a psychrometer, and suitable
in
for
for
this service, and
temperature)
use
measuring sea
apparatus
for
times
main
standard
to take meteorological observations at
daily,
least
four
(at
times
whenever
surface synoptic observations
circumstances permit) and to encourage other ships to take
in
form,
in
areas where
when
particularly
a
modified
observations
by
is
their
to
transmit
these
observations
ships
sparse;
shipping
radio for the benefit of the various official meteorological services,
repeating the information for the benefit of ships in the vicinity.
When in the vicinity of a tropical storm, or of a suspected tropical
storm, ships should be encouraged to take and transmit their
observations at more frequent intervals whenever practicable,
bearing in mind navigational pre-occupations of ships' officers
during storm conditions.
(v)
To arrange for the reception and transmission by coast radio stations
of weather messages from and to ships. Ships which are unable to
communicate direct with shore shall be encouraged to relay their
weather messages through ocean weather ships or through other
ships which are in contact with shore.
(vi) To encourage all masters to inform ships in the vicinity and also
shore stations whenever they experience a wind speed of 50 knots
or more (force 10 on the Beaufort scale).
(vii) To endeavour to obtain a uniform procedure in regard to the
international meteorolqgical services already specified, and, as far
as is practicable, to conform to the Technical Regulations and
recommendations made by the World Meteorological Organization,
to which the Contracting Governments may refer for study and
advice any meteorological question which may arise in carrying out
the present Convention.
(c) The information provided for in this Regulation shall be furnished in form
for transmission and transmitted in the order of priority prescribed by the
Radio Regulations, and during transmission
`to all stations' of
meteorological information, forecasts and warnings, all ship stations must
conform to the provisions of the Radio Regulations.
(d) Forecasts, warnings, synoptic and other meteorological reports intended
for ships shall be issued and disseminated by the national service in the
best position to serve various zones and areas, in accordance with mutual
arrangements made by the Contracting Governments concerned.
Tables (iii)
202 1
Correction of millibar barometers to mean sea level
2
Correction to be applied to the observed pressure for diurnal
variation 205
...................................................................................................................
3
Average values of the barometric change in an hour, due to the diurnal
variation 205
....................................................................................................................
4
Dew-point, °C (for use with marine screen)
204
................................. ....................
206
5
Dew-point, °C (for use with aspirated psychrometer)
6
Relative humidity, per cent (for use with marine screen)
210
........................
208
................................
7
Conversion of temperatures from Celsius scale to Fahrenheit and
kelvin scales 212
...........................................................................................................
8
Conversion of nautical miles to kilometres
9
Conversion of feet to metres
10
Conversion of apparent %N
ind to true
213
....................................................
213
................................................................................
facing
................................................. 214
TABLE 1-
Correction
These corrections
of millibar
barometers
are to be added to the barometer
Temperature
THE DIURNAL VARIATION OF BAROMETRIC PRESSURE IN THE
ZONES OF LATITUDE 0-10° AND 10-20°, N OR S
to mean sea level
readings
TABLE 2-
Correction
to be applied to
the observed pressure for diurnal
of Air (°C)
TABLE 3-
Average values of barometric
change in an hour due to
diurnal variation
variation
(Dry bulb in screen)
Height
-15
-10
-5
10
05
15
20
25
30
35
40
Local
Time
0-10` N or S
10-20= N or S
mb
mb
0
-0.6
-0.5
-0.1
-0.1
+0.3
+0.7
+0.8
+0.6
+0.2
0.6
millibars
0.6
0.6
0.6
0.6
0.6
0.6
1.3
1.3
1.2
1.2
1.2
1.2
1.1
1.1
1.1
1.1
1
1.9
1.9
1.9
1.8
1.8
1.8
1.7
1.7
1.7
1.7
1.6
2.6
2.6
2.5
2.5
2.5
2.4
2.4
2.3
2.3
2.3
2.2
2.2
25
3.3
3.2
3.2
3.1
3.1
3.0
3.0
2.9
2.9
2.8
2.8
2.7
30
4.0
3.9
3.8
3.8
3.7
3.6
3.6
3.5
3.4
3.4
3.3
3.3
35
4.6
4.5
4.5
4.4
4.3
4.2
4.2
4.1
4.0
3.9
3.9
3.8
40
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.7
4.6
4.5
4.4
4.4
45
6.0
5.9
5.7
5.6
5.5
5.4
5.3
5.3
5.2
5.1
5.0
4.9
50
6.6
6.5
6.4
6.3
6.2
6.0
5.9
5.8
5.7
5.6
5.6
5.5
2
3
4
5
6
7
8
9
10
Tetres
5
0.7
0.6
0.6
10
1.3
1.3
15
2.0
20
0.6
0.5
Local
Time
0-10°NorS
10-20° N or S
mb
mb
-0.4
-0.9
-1.3
-1.4
-0.3
-0.7
-0.8
-0.6
-0.2
-0.3
-0.8
-1.1
-1.2
0-1
1-2
2-3
3-4
4-5
5-6
6-7
7-8
8-9
9-10
10-11
-0.5
-0.4
-0.4
-0.1
+0.2
+0.4
+0.6
+0.5
+0.4
+0.1
-0.4
-0.4
-0.4
-0.1
+0.2
+0.4
+0.5
+0.5
+0.3
+0.1
11
-0.3
-1.1
-1.0
11-12
-0.2
-0.5
-0.5
12
13
14
15
16
17
18
19
20
21
22
23
24
-0.6
+0.1
+0.7
+1.3
+1.5
+1.4
+1.0
+0.5
-0.5
-0.1
-0.7
-1.1
-1.3
+1.2
+0.9
+0.3
-0.1
-0.6
-0.9
-0.9
-0.6
-0.2
-0.6
-0.8
-0.8
-0.5
12-13
13-14
14-15
15-16
16-17
17-18
18-19
19-20
20-21
21-22
22-23
23-24
-0.7
-0.6
-0.6
-0.2
+0.1
+0.4
+0.5
+0.6
+0.5
+0.3
0
-0.6
-0.6
-0.4
-0.2
+0.1
+0.3
+0.6
+0.5
+0.4
+0.2
0
-0.3
-0.3
These tables are based on observations made in British ships, at the hours
0000,0400,0800,1200,1600,2000
local time, between the years 1919-1938. In the tropics, should the barometer, after correction for diurnal variation
(Table 2), be as much as 3 millibars below the monthly normal for the
locality, as shown on meteorological charts, the mariner should be on the
alert, as there is a distinct possibility that a tropical storm has formed, or is
forming. A comparision of subsequent hourly changes in his barometer with
the corresponding
figures in Table 3 will show whether these changes
indicate a real further fall in pressure and, if so, its amount. Caution.
diurnal
'1()4 When
entering
variation
mi;;!
a barometric
e-ess.., e
the log the correction
for
z1-i,
It Cl) Cl) cm mmm
L-+Co 1°
ö
11 1, ., 1,
OD N.
01
KMN1
OD tý (D
NNNNN
CY)00
N NNNW
c+] N ý-O
nýýnýna
. -.....
04
U
to
N----
rnmnco)nor)N,
o
M
mý
Oý
ýýýN7
n
NUl
MýOCOI'
V
(D
c
0äý
NvMNýO
r2
ýý
0
LO
NNNNNN
Ny
_
ci
(D
in
LO Iq
N0
NNN
acl)
ýý
MNNNN
-
ö
yn
cc m
m
O ^_ONN
(D Lf) Cl)
ID Lr)IT arrn00
NýT
NNNNNNNF.
-0
0NM
ON1n1IIIIIIII
COr- Nmr
8 L...
to
n3
am
MNm
Gor-
C)
LO
NN
mc7NNNNW
10
N
M
OD t-
NN0
0) CD 10
f2 N0
0V
IIIII
(O -ýrcr)
tý) N OO)fý
NC
OOn
Ö
r)NNNNNNNN
00
Na(D
-0
NN
oCOCD
ä
ýC)
3ý
GI E
N NN
C) Co (0
f+)f0+) N NNN
McNý)
oaam
ýo2aaýo
om
Nýýýýýý
N_
n
NOMmn<OLnMNý
NN------
NNNNNN
C)
a
to
O1- co
C?
04
-0
ý
ýý
aä
3
I
OD ON)n
wa
I
L6
A
(» CO
'ý)N
NNN
)cN+)P)f
cý+
ö
co
N
(1)fhNN
C(Dl)[ýý)AN
KO ýn
NN
C7NýO0f
N(
NN
0) a0 (0 ý '7
NN
NN
m
V Cý)N
ý
ýý
NNNNý OT001ý(O
ýýýý
fC
nO
to
Q
ý
wJ O
E
NN
CV
0) a0 fý <0 V
N-
V
(7Ný01CDf-tO
Ö
/hN
A(CI)+)
c+) f0+) NNNN
in
(N')
(n
m
Iýý
nm
CDmý2
Cw
d
,n
ný
cO
in
ýýýý
ýrn
OýrýQmrýmoNQ
O
=ým
Omý
ýJN
O>ý
NOýNQ)n
NNO
-CC
aoD
GN
ýýý
ýI1ý
C`ý
g,
C71nm
_m
v3
W
J
ýN
N
') C') (7
CM
ýMCN
')A
mLn
f0X)af')NýOýG0
NNNNNNNýýý
OO10Dfý
N NN
V f7Nf7f+)(')f7C)
COhN
c'ý(7P)
=o
r-
a
ý
rn00 r-. (D o
M-0
P)NýONr)
II
ý
(2
u)nrn
N
fD
mm
Ld3
N
Q
iý
Ulvf")NýOýao0Df0
NNNNNN
NN
0
N
")
C`
(7) GO r-
aNý0
(D
Ö
O
Qf')N
co OýC7)nfý
f7QNn
ýE>
ýCO
N
rNOMN
NNNNNNNýý
Cl) ýmMNN
M P- MMA
ý
u)
f0
Oý
MN
V
nt0
01OD
-
V
)nQC7ýOýNC')
ýýn
wU
L.
0O
m
ö
rn
co
I
L
tEd
L.
3Öý
3
aMao
Ea
wo
',
CO -0
ýýR
.f) vmaorn
NNNNN.
yý
GO
mOf
Q
c`ý)n1ý0)o
7
ýR :1
NN
NNý
N
mOU
I
(ý)
V
ODný
Výýýýý
0
b)-
ýOaDfýfD?
ri
H
Q2
JO
m
LO V c7 Ný0
C)c7c+)P)C)c")N
Ö
0
I
N
ýl
It
_. a)
Cm
Lt
rO
02
iU
U,
:
m
<DCD
-0NV
vcl)
n(D
Oo)aomu)cmýOrn
Ný-ý.
ý ýýý
-ý
001ODfýfOý(`')N
ý)
y
öE
ýýL1
hT
ONa
CÖ
m(N
+) Cý)N
fvý)0
Ö
0
Nd
Lý
cl) 0i ýQ)
OD(OLf)Q
Ocri
cV NNNý
c7 c7 NNNN
ý
ý
ö
(0
ý
ý
Q) (V )f1 0)
CM to fIIIIII7
C) ýO
(OLO
NýO)CD
Iý(O(ACO
Ný
NNNNNNN
Üý
O
10
In
CD
0NQ)n1ýOf
ý10L"
mc
?m°
A
MMfý')CN')
n'D
NN
C) CJ ý
CD)()ý
U) RMN0NNNNNNNN
00)ODn
ZO
(ý')cN')f')M
)nQMN
-
ON
C70
ýn
tm.
.
C')QCDmO)
CDm(1)ý:
öäm
ciÖ
ÖrNN
ý
)v°)NN
fhcn")otD)ou))ACCw)ncrN);
0ý22
r- 'D U) vMN
cm NNNNNN
N
N
N
NNNNNNNN
rýtotnv[')Ný00)C
c
CD )L)ýCU
ý00)CD
P) CV Z
h1DfAO
n
m u) QM-O-N
OOfm
f
V
m)nQ
C')N -
O-
f7 Q
tD n
CIJQ
Lnmcc
O) O'
ýrU
m
py3~ö
«
mö
_ý
P) ýn tD
m
Ch ONC'))nh
nN
ONÖö
0
Cl) cr)fn')
M
6
6
N)Cýl)Acm'l)CN
ýC71ý)
N
l)O)(ý+)
Cý9ACý+)CN9f')
mn<D
ul am
cu NNNNNNý
N
C'ý)
9N
0)
(7
ý) P)
Pý) Cý
ý) (+) Cý9CN
Cý) cy)
V
Cý')c°iMCý')CJCm')CN')
Cc7)N
N
ornm
aon
co n(D U) vNNorn
04 NNNNNNN
04
OD r,
0NNN0
Ný
NN
U)
NNNNN
(V NNNNN
ý: e
131 10
fn vMNZ9
a'
M
12 U)Q
11(D
00
f.
NM
O-
)nQN-
(D inQe')N-
QmPCO
O-
N
O)nm1,0
O-
N
f7QW)
nm
OýN)c)
;Nm
=m
Dö
UN6
v)nm
oýý')Q
O
Ný
aon<oýt)Qr)Ný00)
(
O
aontpu)Qr)NýOO)
ml-
m)nQN-
mPm)nQCON
-
QfD1ým
ý.
PmO)ONP)
0-
NQV)CD
--
Nl7IV
nm(D
^N
mý4EN
mO
_
OQtD1ý
N
C7
(n
f'9
fýýp)(1
Cý) C'ý) (0
N)
')
CO
NN 00 NNN
LO VNNNNN0
rnmnIF
t2aý2
o
a7
f
V
O
0
Ö
z,03 i�l'
-
V
Cý')ýC')C')C'ý)ý
ýýý
TCl)
7O)C0
C') CCM
ýýýý
'CO)
')
Cl)
OD n(D
NNNN
Omr
co
NNNNNNNNN
206
LO VMN0
04 NNNNN
NVMNRIOm
O>mn
fOU7O
ý)CV
ý
:O
O)mhm)nQ@')Cy
O)co
1,0
nQC7N-
0
-
OCD
n(2)Oý
NC7LnmPmO)O
Nf")QmPmOf
ý. -ý
I
N0ý1m1ýmOl
^^
III
n/D
NYNNýO
Z'
m
0)co
f-
m)nQC7N-
O
-
Nl7Q)nmrmOf
om
10-
m
ý n
m qý «
miY 10y
O
V
CC A
O^NP)Q
_
)mmý
ý^_
Cb
g Dö
LLY Oz«
E
io
00)co
co
U
m
M
f`
co
(D
co
Lo
co
V
co
0)tDnto
NNNNNNNNNN
O
MN
MMMM
MN
LO V
O
0
O)aDnO(OMNý
ý
N
O r- M(OtDý
IIIIII
m
U
M
ö
v (D
C)
CO f-
(0
CO Q
CO N'-
0
CD nON7co
NNNNNNNNýr
0
tO V
r
NO)COh
r'
MýOtAn
r'
(00
nNN
oi
01 aT N
0)(O1ý(OLO
ý
NNNNNNNNN
NONd(Dco
(! )a
O(Otý
Omlý
00)(Ol,
CO NNNNNNNNN
to
r(DtOMNý
Icl)O
O)tD(ON
(+)NN
ý
^
p)ppf
,
N
0 0)(O
N
M MN
M
N
N
N
M N
'
N N NNN
fý
NN
tDn
.
Om
N
0
V
0)a0(OtO
MNOO)tD(O
V2
V
NON
(OtOCo
0 0) Iý (D tn V
N-
I-
00
Ný
0
(O03
(D a
Cl) -ONO
III
MN
MNO
W tDlý(O(O
MMMNNNNNNNN
ý
00)c0n
N
*-
(D V
tDr
(OtOMNýO
M-ONMtO
(O
m
N
MNO)dOfM Cl) MNNNNNNN
ý
E
CU o
(O (A VN
NN
(D V
00)c+01ý
Q
7
NNC
I
n(OQ
NNO
N
MýONM
(! )
O)701ý
MNý
OýQQCD
I
O
CD
III
0
')
NNC
I
(D
(D NC7Q
c,4 r) 00
ý
tO fý
(') OCO
(000)
O
n
II
N
(')
I
CO
1
I
OCOIT
NNN
co
I
OM
V(DtD
toMNON
ý-
(7) Co (D U) VMN
N0
MMNNNNNNNN
ý
(D
I
°O
II
(p( N() ýN
N
fý CO Q
NN
Cl)
17
m
a(OtDOM(O
MNON
co
ý
N
IIII
tý O
MIý
ý
N
N
M
II
m
Cj
Qä
3m
Ö_m
Ln
co
J
H
(D
Ö
3
0
y
m
a
N
(D LO V
A MN
00)tD
(`ý MMMMNNNNNN
Cl)
N
NNN
00)cOOIOa
ý"-
7
co f-
Om
MN
ý
tn V
m
ON
M-
I
ý
(')
fDOýý(00N
CON
O
CONQ
NMQ
ýN
CO
O
ý
V
MN
NN
OO)aDf-(O(OC
Cl) NNNNNN
tOMN
Cl) Cl) MM
M
O10ý
r-
MCOh
C
O
O
ýOOtDIýtOMýý
NC")LO
(O ý
M
6
aN
NNNN
MN
OMtD1ý(D(O
M Cl) M Cl) NNNNN
A
CD to V
M Cl)
MN
0(0
MMM
f-
Cl) NNNN
(Oto
MN
0C)00
rCl) Cl) M CO NNNN
vMN
NNNNN
c0
r. (D to
MM
Mý
0) co fl
Cl) N0
Cl) Cl) MMNNN
n(DtA
MMMM
ý
V
00)ODntD
tO V MN
NNNNNN
OO)fý
(D tn vM0
NNNNNN
M"-OO)a0tco M Cl) NNN
C
ý
00)
0)CO n(Dto
MMMMM
co
NN
0) CD fý (O tO VMNO
M c7 M ('ý Cl)
MM
O
°O
MN
MN
(")aMN
M MMMN
OO)pph(DtOpMN
RMO
Cl) MMVM
O)
ý-
O)Iý(OtOO
MN
'-
tO VMN
ý
OO)
n 11) tO VMN
NNNNNNNNýý
n
O
l
C)M
NNNNNNNNNý
ONQ
co
Iý0CO
(D0
NNP)C)
Q
cc CDON
'
(D0
ý
mCnnO
Qco
NO
NN(')IT
O aD n
0(O
o
O
C7-
iO
QO-0-
0-
C) "T (n(DOD
0
0ý
NQ0(OCD
NQ
NNNC
O
")
(O0OC7CO
. NNN
0
c')
mN
COI,
NC7(7Q
N
(DtnvMNý00)m1ý
NNNNNNN
OD n(DtOV
(O
o)
(DtnvMNOO)COIý
t)D h (D Na
NNNNNNNNN
C7Q
M
(O
.
N
Cpn(DtA
(")MMMýMMMM
ON
(DtORM
MN700)I,
(2 tO
,
0) a0 r0
0
N
Zr,
C7
N
Ný00)tD(OtOaM
00)(Dfý(OtoQ
M
ý
Q0(D
m
co to
M Cl)
:3
Cl
NN
a
O
O
(DCD
00)GD
O)
Cl) NO
O0)
MN
Ný00)(Oh
c0 tO0
fý (O tO VM
Ný
'
0
CV
LO Qc. ) -
i0
CO COO
o
O
O O) OD
CO(OQ
CDC.
(DtOOMN^OO)
tDh
n
O-
N(')
(O
h0ONC7Ntý0
N
ý-
C!)NO
(7
CO t-
-NQ
ýC70
,ý
tDf+
I
OCOCDm00NMQ
N-ON
(D (O Q C-)N
CDO
NQ
-O-
COCD PmO
ý
0)001,
(OtOKMN
NNNNNNNNNN 0)n (O
(p to OMN
ýO
0
(') lOr`
O)NN
. -NNNNCNVC7C7
'}
1I!
ý
tOfý00NQCAn
ýýNNNNN
N
C)COCOfý
O
0
C7COCD
000
Ncm NP)P)It
iII
i
°
O
Oco r,
V
OCDPCOCOOP)N
CD(OOP)cm
-O
NCOIn
CDnCO
-O-
NC7OCOCOhOD
O
!.
CD0
NN
I,
ll
OýNC7OCO(Dt`
^Iii-
D
ý
7
co
ý,
U0
0)a0Pý
VMMM
(Dtn'IT
Cl) MM
MNýO
O)MntOtna
Cl) MMNNNNNNNNNN
IIIX
MNýO
!D ýtOtnOMNýO
m
(3)
O,
N(7QCO(Of-
N
O)
'IT co
`UO 0
(0
M
(D U)
MMM
r
co
VMNO
co
0) m r(0
NNNNNNNNNN
MMM
U)
Q)
Cl) N0
V
00
r
(0(n
VMNO
co ý
m
Z
%,C
r V
SO
OO m 00 1ý(0
u) a v a a
0
0
0)
ý
chco
ýýt
N
U)
O0)0)00r(0
V
U)
11--lo
MNNN
M0
(0LO
MN
O)co
VVVMMMMMMN V
VVV 7.
U)M
0) 00(0
M
MM
MM
0
I
M N
a a
M
00
NN
ý
U
°
MN
u)IT
to
0
0
(0u)
O
C6
00 V
Vý
f-U)NOrý
a7
VV
ttu)ttU)U)u)ef
MMMMM m(0
MNNNNý
MýOm(0
V
M
0)m(07
VVV
U)
n
I
-
--
NNNN
N
-ONMV
U)
ým0)
(0MO(0c')
N
00
OO00n
MN
11) 'IT
nM
00(0N0)U) V
L
n
m
ýr,
0000r(0tu)KMNýO
U)( n(
ONLnt
n(
n
U)
LL)
LO)
0)00r-
(0 V
VVVVVaaVMM
NOmcOMO1-
M
co
ý
1v:
MNNNN r
00)m00n(0
MMN
(0(0(0(0(0(0u)u)(AU)
in
V)
(0 (n Cl) NO
VVVVV
C.
u)v
Nh
u)t
0 0) 0) 00 n (D co U77M
(0(0U)U)U)u)(n(n)AU)u) C
O
U)U7N
n
r`
ö
(`2 0)
00
MM (0
N
aC
000r-U)v
VVVV
U)vMN
u)(AU)(A(n
ý
ý
N000(nN0)(0
MMNNN
mLn
co
co
co
Co
°
O
tD
O)r-cnNOrý(nN
MMMMMNNN C_
VmVNOmý
L
NNý
(0 00
O
00)
N
(D U)u)vMco
(0(0(0(0(OCOm(O(O(OU)
0)00
00f`
(D LO V MN
U)U)U)U)U)U)U)U)vý
(O(AM
aOa
ý
O) r\ u)NO1ý
MMMMMN V
L
(mo(mO(nOCno(m0(tOCtOCýOC°O(Mom
vä
öä
c(°o(°c(On(mn(rnuO)uý)(Mn(n
(°nv
O
U)
v°rm)rý)cMý) Ui Ö
.0
N
U)
cO
ý)
OnCNmO)P)
MNNNN"-ý O(O)o(Ö(mO(mo(n0cn0(motto rl- r-
rO
co
cv) (tn(Mn(Nn(°noäääv
(to(ýCMOm(ý(0om(mn(nn((0n
ý
n
MC M 7MNNN
O(D
m<
NOnN
VVMMNNN
a)
ON .
l0 C
U) ý
'C
NL
t
ý)
(D
O
v
ý)
p
OO
rýiýnr-(0(0
MMMNN
nt`nArl
(0(0
t
ttR
MO)cm
V
nrýnnnrýr0)O)000000
nf`r`nr`f`r`nf`rr`
0) m
N
rýnnr(0 tt
rýr`(D
000)
O
MN
0)00
(D (n aa
00mf-
r`nn(0(0(0(0(0(0(O
3
(0c LOvvv
NO
U)
nU ) u)
000rMN
(O(o(0(0U)(nU)(
.0
m
vMMNOO)m
rýr- r- r` r`r`(0(O N
O)mmMO)
mmv
V
Cl) Cl) MMNN
VVVV
(D VV
NOOD
NNVVV
ýnM
VMM
Ný
ý7
O
co
N
aý
Ný
O)U)ým-)f)
NN E"
o
ONOU)
M
M
OU)rNrLM
MMNNý
rNMýO)O)U)M
)AýD)ffVVVV
waýäý
c
o
rn'o
c
)D
ö, ö
C
ö
m
ä
ým
NN
mm
0000)0)00
äD äD ý
mmmrýrl
00rýr-
r-
VV
U)v 000000
MCo
M(n
(0(0tU)OMM
n
rýnnnr-
r-
M
U)
nj
t0
W
o
O
V
MNýO)00(0 r`(0U)
(O
(0(0(0(0(0(0U)U)(r)
0
"ý (0U)MN000 U)LO U)tU)Lo
*
Cl)
c
00 n
(0 (0 t
m(Om(O(0ý(o(O(Ot0
NN
000000 00 000000 00 N
nnr
l
0
COU)MN
rl nn(0(0(0(0(0(0(0
V)
Zr)
N
ö
N
°O
00hr,
m00m00
r,
t`r`(0(0(0(0t
0000mm00
00 m
N
MMNNý
U)LO aacf
mm00 m00 m0000 00 00 mmcDmm
U) U) U) U) U)
0)U)NmV
O)[)OU)
VVVMM
Cl) NN
C7
O Lm
ON
a2
c0
> L
0) 0)
ý
LL
J
m
Q
rmppMýO)nmU)N
00f`(0ta
000)00
äo00
mr-nnnrýnn m
mmMO)(DNO)U)O
VVý
MN7OO)rm
U)kn noV
nnrnmmmmmm
(DIn r
rnrrrrmmm
N
0)
N
C)
(0(0tRMNýOO)m r\r`nr`r`r`f`n(0(0
00r`
000)0)00
mm000000r`rr`t`r` r,
0rn00
-
mýU)O)M
NNý
VMMM
O)
C.
U)
010.
NOr
OD
co co tnUYVVVM
Om
Cl) NN
N.. -LC)
r- ý
O)
0
r0 E
0)
000
ro
(00)rn00
COmmm
00 00 00n r`r`n
00 00 00 00 00 00 00
000000)rn0)0)00
mrnrnrnrn00
mmm00
m
co 0000 N
iTON
)
TT
aa
01ýýrnrnrnQ
v
mý
(')
co (0(O(0tt
mmm00
0000 00 nf`
mm00 00 m00 mmmm
N m
O)
0)0)O)O)
O 0 0 Ö p D p
O) O) Of 0 i0 )0 )
O O O
Cl)mOM)rnT0 T
N
Oi
TTO
N
T
) O)
O0)0000n
MNN
m
OD 00 hnnn OD 00 00
m
t0
m mDamOmýcmO
aDO
DatDý C(0D
Om
m m OpO p
(OO D O°' DDOOD
000)00O)
v
MMN
CD CO CO ý
0
OtiOt)rnrnrnrnOtiýOa)ýý
Of
m
OM)OMi
TTT
VN
nn
m
pp pp
O)O)O)O)0)O)OOi
Ö
m m N NIm
CDO DC D00 m
rn
mmmnrnrn
aMNNO
ED OD mmm
OD
U) U)M
OOO)mnm
N
ö
MIOMi MCl)
0)
Cl)
O)OD rmU)
rnnnnrrcD
(7)
O)mMO)mN
(D V
co V OU)O
co co MNN
mm m)n NNvvV
"V co C\1
co
O)(7)OD
O) 00 mm
mnrnn
a
°m
M m
D m
O 2
D
p MO i
ýnnn°ý`mt
WrU)MýO)r
mm
V
OD U) MOr
AA
co (D )O co U) ý)
VNO
rrP.
mm nrnn
comaommmmmoo OOOO)gO)mC
rmmmm)nU)U)
Mý
U)N
mnrCO
CD ONm
O CO mM
m
°
u) ýn
Cl) mMmN
V vMMNN
-'-
E
ÜC
Of O
OD VmNnN
Mý Cl) NN
U)VVVc
ýp ýýäv
)A
výrM)
O
CN
ý
NO
NO)mMOnM
rm
n M
°i
r.
m m inr
m )ntin to Lnav
m
;z a)
(0
I
)O m
Ný (p M
iu i
7
m
nrnnnnnrýnýnn
0) D7 0) Of 0) O) Q) O) O) Oi 0)
(V
0 00 00 0) O) 00 (7) 00 0) T co
O) 00 00 0) (7) O) 0) 0) (m 0) 0)
U
iýi
9aa9
ýýýýT
T
U) VdVý
Of di O) Of
O) Of
aj cy
O)
0)
OD t-
O)mmmC
N
D
ý
m
m
ý
mn
r
C\l Oý Cp týpppp
n r
tDtD
LDýýýý
rýnnnnn(ýtý(ý(ý
rn m (7)w 0) m
ýýppýýppýtDpýýpp
O)O)Or)O)rrnO)OfTO)Of
pp
mDmNm
OiO)O)O)mC
pp
CDmmCD
O nýn
rf
O
00)00r"r MMMM
(0u)
V
MM!
MN
" )MMM
O
mmm
CO CO CO 00 00 CO 00
(7) 0) 0) 0) 0) 0) 0) 0/ 0) 0)
D)c0
(0
NNNNNNNNN
U)OMN
ý0
00 m Ta
00 mmm
(7) 0) 0) 0) (Y) 0)
0)00f`
(0U)
V
MNý
mU 11 ,.:,
a) U
ö
maý
mý
aý
dý
ca
DD
ý-
G
-1 1 II 20
NE
t r` r`
(7) (Y)
O
L..
.
D
U
O
ý
0
0
ý
rnot )otiöiatiotiotiot
(-Y)
ý
m
O
0)
t-.
.
O
ZD
O
>a
g
lÖ N
mmmnOrn
U) z ,, MMN
mmmm m
mmnr,
n(D (0m(nu)
0000 mmmmm00mm
W 00Q)0)00
rnrnrnrnrnrnrnrnrnmrn
(ý!
(0(0(D (0tt
CO00 00 00 CO00ý
0)mrmu)V
MN-
O,
ýNMV
U)mrmO)
OýNM
V
U)mn
-
Lý
Ci
Conversion
TABLE 7of temperature
Fahrenheit and kelvin scales
°C
°F
K
-13.0
248.15
-24.5
-12.1
248.65
-24.0
-23.5
-11.2
-10.3
-25.0
-23.0
-22.5
-9.4
-8.5
-22.0
°C
0.0
readings
on the Celsius
scale
to the
TABLE 8-
°F
K
°C
°F
K
+32.0
273.15
+25.0
+77.0
298.15
2
30
56
3
5.6
40
74
4
7.4
50
93
5
9.3
60
111 6
11.1
70
130
7
13.0
80
148
8
14.8
90
167
306.65
9
16.7
100
185
10
18.5
298.65
249.15
249.65
1.0
1.5
33.8
34.7
274.15
274.65
26.0
26.5
78.8
79.7
299.15
299.65
250.15
250.65
2.0
2.5
35.6
36.5
275.15
275.65
27.0
27.5
80.6
81.5
3(X).15
300.65
-7.6
251.15
3.0
37.4
276.15
28.0
82.4
-21.5
-6.7
251.65
3.5
38.3
276.65
28.5
83.3
301.65
-21.0
-20.5
-5.8
-4.9
252.15
252.65
4.0
4.5
39.2
40.1
277.15
277.65
29.0
29.5
84.2
85.1
302.15
302.65
-20.0
-19.5
-19.0
- 18.5
-4.0
-3.1
-2.2
-1.3
253.15
253.65
254.15
254.65
41.0
41.9
42.8
43.7
278.15
278.65
279.15
279.65
30.0
30.5
31.0
31.5
86.0
86.9
87.8
88.7
303.15
303.65
304.15
304.65
44.6
280.15
32.0
89.6
305.15
45.5
280.65
32.5
90.5
305.65
46.4
281.15
33.0
91.4
306.15
255.65
256.15
8.0
1.4
16.5
2.3
256.65
8.5
16.0
15.5
3.2
4.1
257.15
257.65
9.0
9.5
49.1
282.15
282.65
15.0
5.0
258.15
10.0
50.0
145
5.9
258.65
10.5
11.0
13.5
13.0
12.5
12.0
11.5
6.8
7.7
8.6
259.15
259.65
260.15
9.5
10.4
33.5
34.0
92.3
93.2
34.5
94.1
307.15
307.65
283.15
35.0
95.0
308.15
50.9
283.65
35.5
95.9
308.65
11.0
11.5
12.0
51.8
52.7
53.6
284.15
284.65
285.15
36.0
36.5
37.0
96.8
97.7
98.6
309.15
309.65
310.15
260.65
261.15
12.5
13.0
54.5
55.4
285.65
286.15
37.5
38.0
99.5
100.4
310.65
311.15
11.3
261.65
13.5
56.3
286.65
38.5
101.3
311.65
11.2
12.2
262.15
14.0
57.2
287.15
39.0
102.2
312.15
10.5
13.1
262.65
14.5
58.1
287.65
39.5
103.1
312.65
M
.o
9.5
47.3
48.2
9.0
8.5
14.0
14.9
15.8
16.7
263.15
263.65
264.15
264.65
15.0
15.5
16.0
16.5
59.9
60.8
61.7
81)
17.6
265.15
17.0
62.6
59.0
7.5
18.5
265.65
17.5
63.5
7.0
6.5
6.0
19.4
20.3
21.2
266.15
266.65
267.15
180
18.5
19.0
64.4
65.3
66.2
5.5
22.1
267.65
19.5
281.65
288.15
288.65
289.15
289.65
40.0
40.5
41.0
41.5
104.0
104.9
105.8
106.7
313.15
313.65
314.15
314.65
290.15
290.65
291.15
291.65
292.15
42.0
107.6
108.5
109.4
110.3
111.2
315.15
42.5
43.0
43.5
44.0
315.65
316.15
316.65
317.15
67.1
292.65
44.5
112.1
317.65
23.0
23.9
268.15
268.65
20.0
20.5
68.0
68.9
113.0
113.9
-4.0
269.15
45.0
45.5
318.15
318.65
24.8
293.15
293.65
21.0
69.8
294.15
46.0
114.9
319.15
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
25.7
26.6
27.5
28.4
29.3
30.2
269.65
270.15
270.65
271.15
271.65
272.15
21.5
22.0
22.5
23.0
23.5
24.0
70.7
71.6
72.5
73.4
74.3
75.2
294.65
295.15
295.65
296.15
296.65
297.15
46.5
47.0
47.5
48.0
48.5
49.0
115.7
116.6
117.5
118.4
119.3
120.2
319.65
320.15
320.65
321.15
321.65
322.15
-5.0
-4.5
-0.5
ý 31.1
272.65
+24.5
+76.1
212
297.65
+49.5
+121.1
Kilometres
3.7
77.9
+0.5
Nautical
Miles
1
25.5
255.15
Nautical
Miles
jj
37
273.65
-0.4
Kilometres
20
32.9
301.15
18.0
17.5
17.0
of nautical miles to kilometres
1.9
+0.5
5.0
5.5
6.0
6.5
7.0
7.5
Conversion
1852
Mile
m.
Nautical
of
Internat
oval
the
Based on
TABLE 9Feet
Metres
I Feet
1
2
3
0.30
0.61
30
40
4
5
6
7
8
9
10
1.22
1.52
1.83
2.13
50
60
2.44
2.74
90
0.91
70
80
100
of feet to metres
Conversion
Metres
6.1
9.1
12.2
15.2
18.3
21.3
24.4
27.4
30.5
Feet
200
300
400
500
600
700
800
900
1000
3.05
322.65
213
Metres
61
91
122
152
183
213
244
274
305
II
reef
2 000
3 000
4 000
5 000
6 000
7 000
8 000
9 000
10 000
Metres
610
910
1 220
1 520
1 830
2 130
2440
2 740
3 050
TABLE 10
To obtain approximately
Apparent
force of
wind ,
Beaufort
scale
Apparent direction of wind, in degrees
off the bow
the true force and direction
0°
Speed of vessel in knots
......................
5
10
15
of the wind, from its apparent force and direction,
100
20
25
30
5
10
15
Toface page 214 (i)
W.
20°
20
25
30
5
10
on the deck of a moving vessel
20
15
5
30
25
10
15
40°
20
25
30
5
10
15
20
25
30
5
10
50°
Apparent
force of
15
wind,
Beaufort
20
25
30
scale 1
True direction, degrees off the bow......
True force, Beaufort Scale
....................
2
True direction, degrees off the bow......
True force, Beaufort Scale
....................
3
180 180 180
1
3
4
180 180
5
6
180
7
180 180
0
2
3
180 180
4
5
180
6
96 171 175 177 177
3
2
1
4
5
178
6
True direction, degrees off the bow......
True force, Beaufort Scale
....................
0 180 180
2
1
2
180 180
4
5
180
5
24 126 167 172 175
3
1
2
4
5
176
6
44
2
4
True direction, degrees off the bow......
True force, Beaufort Scale
....................
0
3
0 180
1
1
180 180
3
4
180
5
15
3
32
2
116 159 169
1
3
4
172
5
30
3
5
True direction, degrees off the bow......
True force, Beaufort Scale
....................
0
4
0
3
0 180 180
1
1
2
180
4
13
4
21
3
43
2
112 152
2
3
164
4
6
True direction, degrees off the bow......
True force, Beaufort Scale
....................
0
5
0
4
0
3
0 180
2
1
180
2
13
5
17
4
25
3
49 102
2
2
7
True direction, degrees off the bow......
True force, Beaufort Scale
....................
0
6
0
5
0
4
0
3
0
2
-
15
5
20
0
12
6
4
28
4
47
3
8
True direction, degrees off the bow......
True force, Beaufort Scale
.................... 0
7
0
6
0
6
0
5
0
4
0
3
12
7
14
6
17
6
21
5
9
True direction, degrees off the bow......
True force, Beaufort Scale
....................
0
8
0
8
0
7
0
6
0
5
0
4
11
8
13
8
15
7
10
True direction, degrees off the bow......
True force, Beaufort Scale
.................... 0
9
0
9
0
8
0
7
0
6
0
6
11
9
12
9
11
True direction, degrees off the bow......
True force, Beaufort Scale
....................
0
10
0
10
0
9
0
8
0
8
0
7
11
10
12
True direction, degrees off the bow......
True force, Beaufort Scale
....................
0
11
0
11
0
19
0
9
0
9
0
8
11
11
-
Beaufort Wind Scale
........
Average Velocity in Knots
177 178 178 179
7
56
4
163
1
174 176
3
4
177
5
177 178
6
7
161 172 175 177
5
4
3
2
177
6
177
7
158 171
2
3
175 176
4
5
176 177
6
7
1
100 163 171 174 175 176
6
3
45
2
1
105
1
157 168
2
3
171
4
173 174
5
6
110 154 165 169 171
5
5
4
3
1
173
6
115 152
2
3
163 168
4
5
170 172
6
6
2
116 156 166 170 172
6
3
45
2
62
2
116 150
2
3
161
4
166 169
5
6
75
2
118 146 157 163
4
5
4
3
167
6
86
3
121
3
145 155
4
4
162 165
5
6
3
56
2
110 145 159 166
5
34
2
45
3
73 112 138
3
3
3
153 160
4
5
59
3
85
3
116 138
3
4
150
5
156
6
70
4
97
3
121 138
4
4
148 155 5
6
4
27
4
40
3
68 108 137 152
4
33
3
39
4
56
4
82
3
110 130 144
3
4
4
52
4
70
4
93 115 131
4
4
4
142
5
64
4
82
4
102 119 131 141
4
5
5
6
5
144
3
25
5
33
4
47
4
71 103 130
4
33
37
5
48
4
63
4
85
4
49
5
61
5
77
5
95
4
112 125
5
5
60
6
73
5
88 103
5
5
117 127
5
6
6
83
2
24
6
29
5
38
5
51 71
44
97
4
36
6
43
6
54
5
68
4
8 1103
4
4
47
6
56
6
68
5
80
5
95
5
109
5
58
6
68
6
79
6
91
6
103 114
6
6
7
30
4
45
3
23
7
27
7
33
6
41 53
54
69
4
34
7
40
7
47
6
57
6
69
5
84
5
45
7
53
7
61
6
71
6
82
6
94
6
56
8
64
7
73
7
82
7
93 102
7
7
8
18
6
22
5
30
4
2
8
25
8
30
7
35 43
66
53
5
33
8
38
8
44
7
51
7
59
6
70
6
45
9
50
8
57
8
65
7
73
7
82
7
56
9
62
8
69
8
76
8
84
8
93
8
9
14
8
16
7
19
6
23
6
22
9
24
9
28
8
32 37
77
44
6
33
9
37
9
41
8
47
8
53
7
60
7
44
10
49
9
53
9
60
8
66
8
74
8
54
10
60
9
66
9
72
9
78
9
85
8
10
12
10
13
9
15
8
17
8
20
7
22
10
26
24
9
10 29 33
98
38
7
33
10
36
10
39
9
43
9
48
8
54
8
44
11
47
10
51
10
56
9
62
9
68
9
54
11
58
10
63
10
68
10
73
10
79
9
11
12
11
13
10
14
10
25
10
31
9
35
9
32
11
35
11
38
10
41
10
45
10
49
9
43
12
46
11
50
11
54
10
58
10
63
10
54
12
57
11
61
11
66
11
70
10
75
10 12
174 178 179 179 179 1791
3
4
1
5
6
7
0
02
1
16
9
2
5g
167 176
3
1
18
8
22
11
3
23
11
28
10
107 125
4
4
4
5
6
7
8
9
10
11 13
19
24
30
37
44
52 60
12
>68
When the apparent force of the wind is zero, it is obvious that the speed of the wind is just equal to the speed of the ship and
the d,rectlon of
direction
the wind diametrically opposite to the
in which the ship is proceeding.
Beaufort 12 was formerly defined as 'any wind above 65 knots', no matter
how much it exceeded this Mnit In 1946 tas
decided.
for
the much greater wind speeds
internationally, to extend the Beaufort scale to force 17 (109-119 knots) in order to make provision
ebseNed'n
11
64-71
force
taken
was
12
as
knots
for
force
the upper air. The upper limit
were
altered from 65 to 63, and the limits for
214
As it is unlikely that manners will be able to estimate wind exceeding force 12, the table above is not extended hither than force 12
for
apparent
71
knots.
from
over
the
force,
computed
shp, is
it is shown as
the apparent wind and the speed of
wind
and if the true wind,
than
greater
force 12 ( . 12)
Toface page 214 (ii)
Apparent
force of
wind,
Beaufort
TABLE 10 (contd)
Apparent direction of wind, in degrees
off the bow
Speed of vessel in knots ......................
60°
70`
5
10
15
20
25
30
5
10
15
20
25
30
5
scale
1
2
3
4
5
6
7
8
9
10
11
12
True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale ....................
True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale ....................
True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale ....................
154
145
160
96 125
33456
82
75
5
92
85
76
79
True direction, degrees off the bow......
True force, Beaufort Scale ....................
67 75
87
73
66
988888
65
10
109
123
96
147
133
80
71 77
9999
ia
10
fa
10
True direction, degrees off the bow......
True force. Beaufort Scale ....................
65
69
11
10
True direction, degrees off the bow......
True force, Beaufort Scale
....................
64
68
72
77
12
11
11
11
30
5
10
15
20
25
30
5
10
15
25
30
5
10
15
20
25
30
158
2
170 173
4
3
175
5
175 176
6
7
159
2
171
3
174 175
5
4
175
6
176
7
162 171
2
4
174 175
4
5
176 176
7
6
1
125 152 161
166
169 171
2345
6
7
130
2
153
3
162 166 169 171
7
4
5
6
135
3
154 162
4
4
167
5
169 171
6
7
139
3
156
4
163 167
5
5
169
6
171
7
145 159
3
4
164 168
6
5
170 172
6
7
2
164
7
112 133
3
4
146 155 160 164
7
4
5
6
121
3
139 150
5
4
157
6
161 164
6
7
128
3
143
4
153 158
6
5
162
7
165
7
134 148
4
4
156 160
5
6
164 166
7
8
3
101
4
134 143 150 155
5
6
7
6
111 126 138 146
6
4
5
5
152 156
7
7
119 132
4
5
143 149
6
6
154
7
158
8
127 139
4
5
147 153
6
7
157 160
7
8
4
6
154
7
116 128 136
6
143
7
95
5
110 122 132 139 145
5
6
6
7
7
105
5
118 129 137
6
6
5
143 148
7
8
114 126
5
6
135 142
6
7
147
8
151
8
123 133
5
6
141 146
8
7
150 154
8
8
5
133
7
92
6
104
6
114 123 131 137
6
7
7
8
102
6
112 122 129
7
7
6
136 141
8
8
111 121
6
7
129 135
7
8
140
8
145
9
120 129
6
7
136 141
7
8
145 149
9
9
6
124
8
89
7
99
7
108 116 132 129
7
8
8
8
99
7
108 116 123
8
8
7
129 134
8
9
109
7
117 124 130
8
8
8
135
9
139
9
118 126
7
8
132 136
8
9
141 145
9
10
7
116
8
88
8
96 103 110 117 123
8
8
8
9
9
98
8
105 112 118
9
9
8
124 129
9
9
107
8
114 120 126
8
9
9
131
10
135
10
117 123
8
9
128 133
9 10
137 140
10 11
8
97
104
9
110
9
87
9
93
9
97
9
102 109
9
g
114
10
119 124
10 10
106
9
112
9
117 122
10 10
127
10
131
11
116 121
9
10
126 130
10 10
134 137
11 12 9
93
10
99
104
86
91
10
97 102 108
112
96
111
116 120
10
105
110
115 119 123
127
10
101 106
115 119
124 128
131 134
10 10
10
10
10
10
10
10
95 100
11
11
85
11
90
11
95
11
99 104 108
11 11
11
95
11
92
11
84
12
88
12
93
12
97 101 106
12 12 12
94
12
105 129
92
64455
113
119
94
85
96
9
91
10
81
79
7ý7
102
89
82 94
6666
10
86
11
11
89
7
77 86
888A
76
83
999a
75
10
75
11
74
11
81
10
80 144 154
160
6
129
106
141 148
117 126
7
99 108
77
94 102 109
8
90
87
10
85
90
11
11
11
79
83
87
12
117
7
12
11
96
11
120
4
100 106 112 116
9
9
9
10
10
10
10
10
100 104 109
11
11 11
11
11
113 116
12 12
98 103 106 110 114
12 >12 >12
12 12
11
0
1
In Knots
0
2
2
3
4
5
9
13
s67g9
19
See footnotes
overleaf.
24
30
37
44
11
11
12
104 109 113 117 121
11
11
12 12
12
125
12
114 119
11 12
123 126 129 132
12 12 >12 >12 11
104
12
121
12
114 118 121 124 127 130
12 '12 >12 >12 >12 =>12
12
108
12
112 115
118
-12 >12
>12
Beaufort Wind Scale Average Veloci
---------- --
20
173 175 175 176
4
6
7
5
153
93 102
109
778
83
25
170
3
116 126
130
ö7
20
wind,
Beaufort
157
2
141
85 102
65556
90 100 110
6
84
7
15
110°
176
7
63345
5556
69
True direction, degrees off the bow......
True force, Beaufort Scale ....................
139
157 170 174
175
175
2345
6
164
44456
True direction, degrees off the bow......
True force, Beaufort Scale ....................
True direction, degrees off the bow......
True force, Beaufort Scale ....................
176
167
162
169 171
120 151
234567
125
10
100°
scale
176 176
174
171
156
234567
104
90 ,
80°
Apparent
force of
10
11
52
60
12 >68
10
11
11
11
12
12
TABLE 10 (contd) pparent
force of
wind,
aufort
scale
1
2
3
4
5
6
7
8
9
10
11
12 Apparent direction of wind, in degrees off the bow
Speed of vessel in knots ......................
130°
120°
5
10
15
20
25
30
5
10
15
20
150°
140° _
30 25
To /ace page 214 (iii) 5
10
15
20
30
25
5
15
10
170°
160°
20
25
30
5
10
15
20
25
30
5
10
15
20
25
30
5
10
160°
Apparent
force of
15
wind,
Beaufort
20
25
30
scale True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale
.................... True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction, degrees off the bow......
True force, Beaufort Scale .................... True direction degrees off the bow......
,
True force, Beaufort Scale
.................... True direction degrees off the bow
,
...... True force, Beaufort Scale
.................... T rue di rect ion,
rees offth e bow.,..
Tmeforce, Beaufort Scale . .................. 167 173
4
3
175 176 177
6
5
5
177
7
169 174 176 177 177 178
3
4
7
456
172
3
176 177
45
178
6
178 178
6
7
174
3
177 178 178
178 179
45
7
6
6
177 179
4
3
179 179
56
179
6
179
7
180 180
3
4
180 180
56
180 180
6
7
1
155 164
4
3
169 171 172
7
6
5
174
7
160 167 171 173 174 174
3
4
567
8
165
3
170 173
45
174
6
175 176
7
8
170
3
174 175 176
176 177
45
8
6
7
175 177
4
3
178 178
56
178
7
178
8
180 180
3
4
180 180
56
180 180
7
8
2
148 157
5
4
162 165 168
7
6
6
170
8
155 161 166 168 170 172
4
5
677
8
160
4
166 169
56
171
7
172 174
7
8
168
4
171 173 174
175 176
56
8
7
7
173
4
175
5
176 177
67
177
7
177
8
180 180
4
5
180 180 180 180
67
8
8
3
142 151
6
5
156 160 164
8
7
6
165
8
150 157 161 164 166 168
5
6
9
678
158
5
163 166
67
168
7
170 171
8
9
166
5
169 171 172
173 174
67
9
7
8
173
5
174
6
175 176 176
8
77
177
9
180 180
5
6
180 180
77
180 180
8
9
4
140 146
6
6
152 156 158
8
8
7
161
9
148 154 158 161 163 165
6
6
9
789
156
6
160 163
77
166
8
167 168
9 10
164
6
167 169 170
172 172
77
8
9 10
172
6
173
7
174 175
78
175
9
176
10
180 180
6
7
180 180
78
180 180
9 10
5
138 144
7
7
149 152 156
9
8
8
158
10
147 151 155 158 160 162
7
7
899
10
155
7
159 161
8B
163
9
166 167
9
10
164
7
166 168 169
170 171
88
9
10 10
172 173
8
7
174 175
89
175 175
10
10
180 180
7
8
180 180 180 180
89
10 10 6
137 142
8
8
146 150 152
10
9
9
155
10
146 150 153 156 158 160
8
8
11
9 10 10
154
8
157 160
89
162
10
163 165
10 11
163
8
165 167 168
169 170
89
10 10 11
171 172
8
8
174 174
9 10
174 175
10
11
180 180
8
8
180 180
9 10
7
135 140
9
9
144 147 150
11
10
10
153
11
145 148 151 154 157 158
9
9
10 10 11 11
154
9
156 159
9 10
160
10
162 164
11 12
162
9
164 166 167
168 169
9 10 11
11 12
171
9
172
9
173 174 174 174
11 12
10 11
180 180
9
9
180 180 180 180
10 11
11 12
8
135 138
10
9
150
148
145
142
11
11
10
144 147 150 152 155 156
10 10
12
11 11 12
154
10
155 157 159 161 163
11
12 12
10 11
162
10
164 165 166
166 168
10 11 11
12 >12
171
10
172 173 173 174 174
11 11 12 >12
10
180 180
10 10
180 180 180 180
11 11 12 >12
9
149 144 146 149 151 154 156
146
143
141
136
134
124 128 132 135 138 141 12
>
10
12
11 11 12>12 >12
12
11
10 11
10 11
11
12 12 >12
153
10
155 156 158 160 162
12 >12 >12
11 12
162 163 164
165 17 168
11
11 12 12
>12 >12
173
174
173
173
172
171
11 12 12 >12 >12
11
180 180
11 11
180 180 180 180
12 >12 >12 >12
10
147 143 146 148 150 152 154
145
142
140
137
134
123 128 131 134 137 139 >12
12
11 12
12 >12 >12 >12
>12
12
12
11
11 12
12 >12 >12 >12
153
11
155 156 158 160 161
12 >12 >12 >12 >12
162
12
163 164 165
12 >12 >12
173
174
173
172
171
171
12 >12 >12 >12 >12
12
180 180 180 180 180 180
12 12 >12 >12 >12 >12
11
153
154 156
157
159 160
162
180 180
12 >12 >12 >12 >12 >12
12
'12
163 164 165
166 167
164 172 175
24
4
150 162 166
34
5
142 152 159
45
6
135 145 152
55
6
131 140 146
66
7
129 136 142
67
8
128 134 139
78
8
126 132 136
89
9
125 129 134
9 10
10
176 176
56
170 171
67
163 166
67
156 159
78
151 154
88
147 150
89
143 147
99
140 143
10 10
138 141
11 11
177
7
172
7
168
8
162
8
157
9
153
9
150
10
146
11
144
12
138 141 143
145
123 127 130 133 135 137 134 136
>12
>12
>12
12 >12 >12
12 >12 >12 >12 >12 >12
Beaufort Wind Scale ...... Average Velocity in Knots 0
143 145 147 149 150 152
12 >12 >12 >12 >12 >12
1
2
3
0259
4
13
See footnotes
5
19
6
24
on first page of this Table 7
30
8
37
9
44
112 167
>12
171
171 172 172
173
173
180 180
180 180
10 11 180 180
>12 >12 >12 >12 >12 >12 >12 >12
>12
>12
>12 >12 > 12
>12
-12 >12 >12
10
11
12
52
60
-68