594/ 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
4
.
2
.
1
AH &
T
p
re
p
aration
4
.
2
.
1
.
1
B
asic require
m
ent
Anchor
hand
li
ng
shall
be e
x
ecuted
i
n accordance w
i
th
the
scope of wor
k
spec
i
f
i
cat
i
on
.
Even
i
f
the
OI
M
has
the
author
i
ty
to ma
k
e
the
necessary
changes
,
s
i
gn
i
f
i
cant
ones
shall
be
ver
i
f
i
ed
by
the
operat
i
ng
compan
i
es
(T
he
vesse
l).
F
urthermore pr
i
or
to
start
any AH
T
operat
i
ons:
x
T
he
Master
shall
rev
i
ew
the
vesse
l’
s
approved
S
tab
ili
ty
B
oo
kl
et
.
x
T
he
Master
shall
ensure
that
the
S
tab
ili
ty
B
oo
kl
et
i
s
understood
and
that
the
vesse
l
's
stab
ili
ty
ca
l
cu
l
at
i
ons
are
performed
as
re
q
u
i
red
i
n
fu
ll
accordance
w
i
th
the
ru
l
es
and
gu
i
de
li
nes
wh
i
ch
are
e
x
pressed
i
n
the
S
tab
ili
ty
B
oo
kl
et
.
x
I
n
any
s
i
tuat
i
on
,
the
Master
has
the
author
i
ty
to
stop
operat
i
ons
i
f
he
determ
i
nes
the
s
i
tuat
i
on
to
be
dangerous
or
at any
t
i
me
c
l
ose up
to
vesse
l
capab
ili
t
i
es
or
operat
i
ona
l li
m
i
ts
.
x
T
he
Master
shall
ma
k
e other
off
i
cers
aware
of
th
i
s
procedure
.
x
I
t
i
s
recommended
that
a
ll
dec
k
off
i
cers
are
fam
ili
ar
w
i
th
stab
ili
ty
ca
l
cu
l
at
i
ons
and
that
vesse
l
ma
xi
mum
operat
i
ng
li
m
i
tat
i
ons
are documented
.
x
Concern
i
ng
i
nstruct
i
ons
shall
a
l
so
be
put
on
d
i
sp
l
ay
i
n
the whee
l
house
and
h
i
gh
li
ghted
to
ne
x
t
crew
dur
i
ng handover
.
x
S
tab
ili
ty
ca
l
cu
l
at
i
ons
and
re
l
ated
i
ssues
shall
be
i
nc
l
uded
i
n
the
report
re
q
u
i
red
after
each
anchor
hand
li
ng
and
tow
i
ng
operat
i
ons
.
x
T
he
sh
i
p
shall
comp
l
y w
i
th
the
e
q
u
i
pment manufacturer
i
nstruct
i
ons
for
the
preparedness
and
the
operat
i
on
.
4
.
2
.
1
.
2 S
co
p
e o
f w
ork
A) Following information will be required to ensure safe AHT operation:
a) Work specification.
b) General information.
c) Field information for both locations.
d) Information about installation.
e) Mobilization – loading list for equipment.
f) Other information related to work scope.
g) Recovery-launch of anchors stepwise operation.
B) Concerning the MOU:
a) Chain type and length (numbering of anchor lines and anchor pattern).
b) Anchor type, weight and quantity.
c) Recommended PCP length, dimension, socket type and any chain tails (both ends).
d) Fluke angle on anchor.
e) Towing gear SWL.
f) Various propulsion systems (size and type thrusters, DP on installation).
g) Telephone numbers (vessels and installation).
h) Crane radius and lifting capacity.
C) Field information:
a) Position
b) Water depth
c) Sea bottom conditions
d) Infrastructure (pipelines, templates etc.)
e) All relevant parties involved shall have full details regarding the location of pipelines and sub-
sea obstructions / structures relating to the whole operation. Where it is known that AHT
operations will be conducted near to pipelines or sub-sea obstructions, structures, then full
written procedures should be agreed by all parties.
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
18
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
.
594