268/ Navigation and Watch Keeping / 992
Na
v
i
g
ation and
W
atc
h
Kee
p
in
g
BOS-
P
RD-2
6
.900
5
02
4
.
3
.1
O
p
en
s
eawa
ys
T
he
B
r
id
g
e
W
atc
h
O
ff
ice
r
shall
:
x
Carefu
ll
y
a
pp
ra
i
se
the
s
i
tuat
i
on
based
on
s
i
g
ht
and
hear
i
n
g
as
w
e
ll
as
the
a
pp
ro
p
r
i
ate
charts
and
naut
i
ca
l
p
ub
li
cat
i
ons
;
x
Constant
l
y
aff
i
rm
the
current
p
os
i
t
i
on
of
the
vesse
l
accord
i
n
g
to
the
a
pp
roved
p
assa
g
e
p
l
an
;
chec
k
such
p
os
i
t
i
ons
us
i
n
g
e
l
ectron
i
c
e
q
u
i
p
ment
such as
G
P
S;
x
U
se any other
br
i
d
g
e nav
i
g
at
i
ona
l i
nstruments
and e
q
u
i
p
ment
.
T
he
E
n
g
ine
W
atc
h
O
ff
ice
r
res
p
ons
i
b
ili
t
i
es
shall
i
nc
l
ude
(i
f
w
atch
i
s
re
q
u
i
red
)
:
x
Ensur
i
n
g
en
g
i
neer
i
n
g w
atch
i
s
a
w
are of
the
nature of
the
vesse
l
s
current
tas
ki
n
g
;
x
Ensur
i
n
g
i
nstant
res
p
onse
to
command of
the
vesse
l;
x
M
a
i
nta
i
n
i
n
g
ma
xi
mum mach
i
nery eff
i
c
i
ency at
a
ll
t
i
mes
;
x
P
romot
i
n
g
a
safe
w
or
ki
n
g
env
i
ronment
;
x
P
rov
i
d
i
n
g
i
mmed
i
ate
res
p
onse
to
emer
g
enc
i
es
(
f
i
re
,
f
l
ood
,
mach
i
nery
brea
k
do
w
n
,
steer
i
n
g
g
ear
brea
k
do
w
n
);
x
M
a
i
nta
i
n
i
n
g
f
i
re ma
i
n
p
ressure
w
i
th
suff
i
c
i
ent
read
i
ness
of
p
um
p
s
;
4
.
3
.
2 C
oa
s
tal Na
v
i
g
ation
T
he
B
r
id
g
e
W
atc
h
O
ff
ice
r
shall
:
x
Ensure
that
the
l
ar
g
est
sca
l
e
current
and
corrected
nav
i
g
at
i
ona
l
chart
for
the
a
pp
li
cab
l
e
area
i
s
be
i
n
g
used
;
x
Chec
k
and
record
the
vesse
l
p
os
i
t
i
on
on
the
chart
us
i
n
g
ava
il
ab
l
e
nav
i
g
at
i
ona
l i
nstruments
(
s
i
g
ht
bear
i
n
g
s
,
radar
bear
i
n
g
s
,
p
ara
ll
e
l i
nde
xi
n
g
,
de
p
th
sound
i
n
g
s
,
etc
.
w
i
th
p
os
i
t
i
on
f
ix
es
be
i
n
g
chec
k
ed
us
i
n
g
G
P
S);
x
T
une
and
constant
l
y mon
i
tor
the
radar
e
q
u
i
p
ment
to
detect
w
ea
k
echoes
(
sma
ll
craft
,
nav
i
g
at
i
ona
l
mar
k
s
and other
sma
ll
f
l
oat
i
n
g
ob
j
ects
,
etc
.)
and
p
erform
re
g
u
l
ar
radar
p
l
ots
;
x
I
dent
i
fy and
conf
i
rm
nav
i
g
at
i
on mar
k
s
and any other
p
os
i
t
i
on
i
nd
i
cat
i
n
g
mar
k
s
;
x
Carry
out manoeuvres
i
n
a
t
i
me
l
y manner
to
avo
i
d
creat
i
n
g
p
otent
i
a
ll
y
c
l
ose
q
uarters
s
i
tuat
i
ons
w
i
th
fu
ll
and
com
p
l
ete
re
g
ard
for
p
reva
ili
n
g
current
and
other
w
eather
cond
i
t
i
ons
,
d
i
stance
from
shore
,
sha
ll
o
w w
aters
,
f
ix
ed ob
j
ects
and
traff
i
c
dens
i
ty
.
T
he
E
n
g
ine
W
atc
h
O
ff
ice
r
res
p
ons
i
b
ili
t
i
es
shall
i
nc
l
ude the
fo
ll
o
w
i
n
g
(i
f
w
atch
i
s
re
q
u
i
red
)
:
x
Ensur
i
n
g
en
g
i
neer
i
n
g w
atch
i
s
a
w
are of
the
nature of
the
vesse
l
s
current
tas
ki
n
g
;
x
Ensur
i
n
g
i
nstant
res
p
onse
to
command of
the
vesse
l;
x
M
a
i
nta
i
n
i
n
g
ma
xi
mum mach
i
nery eff
i
c
i
ency at
a
ll
t
i
mes
;
x
P
romot
i
n
g
a
safe
w
or
ki
n
g
env
i
ronment
;
x
P
rov
i
d
i
n
g
i
mmed
i
ate
res
p
onse
to
emer
g
enc
i
es
(
f
i
re
,
f
l
ood
,
mach
i
nery
brea
k
do
w
n
,
steer
i
n
g
g
ear
brea
k
do
w
n
);
x
M
a
i
nta
i
n
i
n
g
f
i
re ma
i
n
p
ressure
w
i
th
suff
i
c
i
ent
read
i
ness
of
p
um
p
s
;
x
Ensur
i
n
g p
ermanent a
i
r
p
ressure
i
s
ava
il
ab
l
e
for
sound
s
i
g
na
l
s
;
x
Ensur
i
n
g
standby mach
i
nery
i
s
at
i
mmed
i
ate
not
i
ce
;
x
Ensur
i
n
g
emer
g
ency
steer
i
n
g
i
s
ready
for
i
mmed
i
ate o
p
erat
i
on
;
x
I
f
l
oca
l
contro
l
s
are
f
i
tted
,
ensur
i
n
g
l
oca
l
contro
l
of
mach
i
nery
and
steer
i
n
g
g
ear
i
s
i
mmed
i
ate
l
y
ava
il
ab
l
e
w
i
th
su
i
tab
l
y
q
ua
li
f
i
ed
and
e
x
p
er
i
enced
p
ersonne
l
ava
il
ab
l
e
to
o
p
erate
i
t
. (
A
dd
i
t
i
ona
l W
atch
K
ee
p
ers may be
re
q
u
i
red
);
x
Ensur
i
n
g
a
ll
rema
i
n
i
n
g
f
i
re
p
um
p
s
are at
i
mmed
i
ate not
i
ce
.
V
ers
i
on
S
F
(BOS-
P
RD-0
7
.900
5
02-
ver
.0
4
). O
r
i
g
i
na
l
date:
0
1
/0
6
/20
1
2.
V
ers
i
on
date:
31
/
1
2/20
1
5
.
V
a
li
d
vers
i
on
on
l
y
on Q
M
S
s
i
te
.
U
ncontro
ll
ed
document
w
hen
p
r
i
nted
.
P
rocedure
p
re
p
ared by:
BOS
Head
of
O
p
erat
i
ons
.
App
roved
by:
BOS
Head
of
O
p
erat
i
ons
.
V
a
li
dated by:
BOS
Qua
li
ty
R
e
p
resentat
i
ve
.
6
/
1
7
268