623/ Anchor Handling and Towing Operations Procedure / 992
A
nc
h
or
H
andlin
g
and To
w
in
g
O
p
erations
P
rocedure
BOS-
P
RD-2
6
.900
6
14
A
recogn
i
sed
re
q
u
i
rement
to
norma
l
towage
i
s
that
each
component
i
n
the
tow
i
ng
gear
shall
have
a
brea
ki
ng
strength
not
l
ess
than
3
t
i
mes
the
bo
ll
ard
pu
ll.
An
e
x
cept
i
on
to
th
i
s
concerns
synthet
i
c
f
i
bre
hawsers
.
N
ote:
W
henever
a
hawser
i
s
used
as
a
part
of
the
tow
i
ng
gear
, D
et
N
ors
k
e Ver
i
tas
(DN
V
)
re
q
u
i
res
that
i
ts
brea
ki
ng
strength
shall
be
tw
i
ce
that of
the
tow
i
ng w
i
re
.
T
horough
p
l
ann
i
ng
of
the
tow
i
ng
operat
i
on
i
s
of
v
i
ta
l i
mportance
. T
he
norma
l
tow
i
ng
operat
i
on
i
s
tow
i
ng
of
dr
illi
ng
r
i
gs
from
one
l
ocat
i
on
to
another
. I
n
these
cases
the
i
nformat
i
on
g
i
ven
i
s
often
i
nsuff
i
c
i
ent
. T
he
Master
must
therefore estab
li
sh
a good
commun
i
cat
i
on w
i
th
the
r
i
g
to
get
the
needed
i
nformat
i
on
.
4.3.1.1 General towing rules
S
pec
i
a
l
attent
i
on
should
be
pa
i
d
to
the
tow
li
ne
;
espec
i
a
ll
y
for
prevent
i
ng any
chaf
i
ng and
fr
i
ct
i
on
.
x
Fi
bre protect
i
on
should
be
used
,
a
l
ternat
i
ve
l
y
regu
l
ar
ad
j
ustments
of
the w
i
re
l
ength
.
x
Ma
j
or
dynam
i
c
tens
i
on
should
be
avo
i
ded
.
x
Changes
i
n
tow
i
ng
speed
shall
be done
very
s
l
ow
l
y and
i
n
a
contro
ll
ed manner
.
x
W
hen
heav
i
ng
i
n
or
pay
i
ng
out
the
tow
li
ne
,
the
eng
i
ne
thrust
shall
be
reduced
correspond
i
ng
l
y
to
avo
i
d
damage
to
the
tow
li
ne
.
x
Wi
re
connect
i
ons
should
be
used when
appropr
i
ate
,
but
th
i
s w
i
re
shall
have
a
brea
ki
ng
strength
of
at
l
east
90%
of
the
tow
li
ne
.
x
Avo
i
d
abrupt
and ma
j
or
changes
i
n
head
i
ng
. I
f
the
head
i
ng
i
s
changed
,
one must
ensure
suff
i
c
i
ent
room
for
the
i
ntended
manoeuvre
and
ta
k
e
i
nto
cons
i
derat
i
on
any
other
tow
i
n
progress
i
n
the
same area
.
x
Ma
j
or
changes
i
n
head
i
ng
w
i
th
a
l
ong
tow
li
ne
shall
be
avo
i
ded
,
as
the
w
i
re
cou
l
d
become
s
l
ac
k
ened
caus
i
ng damages
by
touch
i
ng
the
sea bottom
.
x
Preferab
l
y use
the
tow
eye
or
"
eye
-
and
-
eye w
i
re
"
to
contro
l
the
tow
li
ne
;
avo
i
d
us
i
ng
the
tow
i
ng
p
i
ns
for
th
i
s
purpose
.
x
Ma
i
nta
i
n
focus
on
the
use of
tens
i
on
contro
l i
n
re
l
at
i
on to br
i
d
l
e
.
x
S
horten
the
l
ength
of
the
tow
li
ne when
tow
i
ng w
i
th
reduced power
and
i
n
shall
ow waters
.
4
.
3
.
2
To
w
in
g
o
p
eration
T
he
sa
ili
ng
p
l
an
for
the
tow
shall
be
p
l
anned
carefu
ll
y
by
the
tow
i
ng
vesse
l i
n
cooperat
i
on
w
i
th
the
i
nsta
ll
at
i
on
regard
i
ng
the
water
depth
,
offshore
i
nsta
ll
at
i
ons
,
sub
-
sea
i
nsta
ll
at
i
ons
and
emergency
anchorage
.
Pr
i
or
to
tow
i
ng operat
i
ons
,
the
Master
must
i
nform
the
crew and
prepare
the
vesse
l
for
the
operat
i
on
.
x
T
he
tow
i
ng operat
i
on
to
be
stud
i
ed and d
i
scussed
.
x
A
ll
tow
i
ng e
q
u
i
pment
shall
be chec
k
ed and
prepared
for
the
operat
i
on
.
x
O
n
l
y
cert
i
f
i
ed
,
mar
k
ed
, i
dent
i
f
i
ed
e
q
u
i
pment
shall
be used
.
x
Concerned hydrau
li
c
e
q
u
i
pment
shall
be
tested
.
x
T
he
tow
i
ng w
i
re and
soc
k
et
shall
be
i
nspected
.
x
D
escr
i
pt
i
on of
capac
i
ty of
br
i
d
l
e
and wea
k li
n
k.
x
D
escr
i
pt
i
on and
d
i
mens
i
on
of
end
term
i
nat
i
on
of
the
i
nsta
ll
at
i
on's
e
q
u
i
pment
.
x
Commun
i
cat
i
on
li
nes
shall
be
spec
i
f
i
ed
(
UH
F
/VH
F
/mob
il
e
te
l
ephone
).
A) Sailing route
T
o ma
k
e
the
sa
ili
ng
route as
short as
poss
i
b
l
e
,
the
Master
shall
cons
i
der
severa
l
factors:
x
Per
i
od of
the
year
(S
ummer
, Wi
nter
).
x
Current
sett
i
ngs
.
x
W
ater
depth
.
x
S
ubsea obstruct
i
ons
(
wrec
k
s
,
o
il
/gas we
ll
s
).
x
O
ffshore
i
nsta
ll
at
i
ons
.
x
Preva
ili
ng and
e
x
pected weather
cond
i
t
i
ons
.
x
I
f
the
towed
r
i
g has
i
ts
own
propu
l
s
i
on mach
i
nery
.
x
Used or
recommended
sa
ili
ng
route
.
Vers
i
on
SF(BOS-
P
RD-0
7
01.000
5
-
ver
.
C
R). O
r
i
g
i
na
l D
ate:
3
1
/
12
/
201
5
.
Vers
i
on
D
ate:
N
/A
.
Va
li
d
vers
i
on
on
l
y on QM
S
s
i
te
.
Page
47
of
60
Procedure prepared by:
BOS
Head
of
O
perat
i
ons
.
Approved
by:
BOS
Head
of
O
perat
i
ons
.
Va
li
dated by:
BOS
Qua
li
ty
R
epresentat
i
ve
.
623