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Vessel Stabilit

y

BOS-

P

RD-2

6

.900

6

01

4

.

3

.

2

S

p

e

c

i

f

i

c co

m

p

a

n

y

i

n

st

r

u

c

ti

on

s i

n

c

ase

o

f

d

a

m

a

g

e

I

n

case of

f

l

ood

i

n

g

,

p

ro

p

er

i

nvest

i

g

at

i

on

should

ta

k

e

p

l

ace before any act

i

on:

x

A

ny

p

ro

g

ress

i

ve

f

l

ood

i

n

g

of

undama

g

ed

s

p

aces

shall

be

p

revented

;

x

E

x

tend

of

dama

g

e

shall

be

estab

li

shed

as

soon

as

p

oss

i

b

l

e

(i

t may

not

corres

p

ond

to

any

dama

g

e

case ana

l

ysed

i

nto

Stability Booklet

);

x

Vesse

l

stab

ili

ty

should

be assessed based on

the actua

l

e

x

tent

of

dama

g

e and

s

p

aces

f

l

ooded

;

x

I

n

case

of

any

correct

i

ve

act

i

on

(

ba

ll

ast

i

n

g

)

to

i

m

p

rove

the

vesse

l

stab

ili

ty

cond

i

t

i

on

i

t

should

be

ver

i

f

i

ed

that

the

m

i

n

i

mum

re

q

u

i

red

stab

ili

ty

shall

be

ma

i

nta

i

ned

at

any

sta

g

e

of

the

correct

i

on

.

S

p

ec

i

a

l

care

to

cross

sect

i

on

va

l

ve

o

p

en

i

n

g

should

be

cons

i

dered

.

T

he

res

i

dua

l

ca

l

cu

l

ated

hee

l i

n dama

g

e

cond

i

t

i

on

shall

be

li

m

i

ted

,

and

w

ater

on dec

k

best

p

revented

.

F

or

the

p

re

p

arat

i

on

of

s

p

ec

i

f

i

c

o

p

erat

i

ons

such

as

li

ft

i

n

g

o

p

erat

i

ons

,

to

w

i

n

g

or

anchor

hand

li

n

g

o

p

erat

i

ons

,

the

standard

dama

g

e

cond

i

t

i

ons

re

q

u

i

rements

can

be

d

i

sre

g

arded

. I

t

i

s

su

pp

osed

that

such

a

s

p

ec

i

f

i

c

o

p

erat

i

on

w

ou

l

d

be

i

mmed

i

ate

l

y

sto

pp

ed

i

n

case of

dama

g

e

to

the

vesse

l.

4

.

4

E

n

te

r

i

ng dr

y

dock

B

efore doc

ki

n

g

the

vesse

l,

the

Maste

r

shall

chec

k

:

x

T

he

w

e

i

g

ht of

the

vesse

l

:

i

t

i

s

recommended

that

the

vesse

l

be

k

e

p

t as

li

g

ht

as

p

oss

i

b

l

e

;

x

T

he

tr

i

m

of

the

vesse

l

: for

correct

k

ee

l

doc

ki

n

g

,

set

the

tr

i

m

even

k

ee

l

or

s

li

g

ht

l

y do

w

n by

the head

;

x

T

he

hu

ll

fat

i

g

ue: by

k

ee

p

i

n

g

bend

i

n

g

moments

and

shear

i

n

g

forces

to

acce

p

tab

l

e

l

eve

l

s

to

p

revent

dama

g

e

to bottom

of

the

vesse

l.

S

p

ec

i

f

i

c

attent

i

on

should

be

g

i

ven

to

the

tan

k

s

that

are

f

ill

ed

i

n

re

l

at

i

on

to

p

re

p

arat

i

on

of

the

number

of

k

ee

l

b

l

oc

k

s

su

pp

ort

i

n

g

the be

l

o

w

structure

.

T

he

Maste

r

shall

chec

k

that

the

vesse

l i

s

i

n

an

acce

p

tab

l

e

stab

ili

ty

cond

i

t

i

on

p

r

i

or

to

enter

i

n

g

the

dry

doc

k.

T

he

li

g

htest

cond

i

t

i

on

shall

be observed

.

B

efore

enter

i

n

g

a

p

ort

w

i

th

thresho

l

d

(

m

i

n

i

mum

ava

il

ab

l

e

w

ater

)

the

Maste

r

shall

chec

k

that

vesse

l

draft

i

s

not

e

x

ceed

i

n

g

thresho

l

d

draft

. T

r

i

m

and

s

p

eed

(

s

q

uat

effect

may

be

observed

)

shall

be cons

i

dered

w

i

th

p

art

i

cu

l

ar

care

.

4

.

5

R

o

ll stabilisati

on

s

y

ste

m

s

T

he

Maste

r

shall

refer

to

the

vesse

l

s

p

ec

i

f

i

c

i

nstruct

i

ons

and

li

m

i

tat

i

ons

as

descr

i

bed

i

n

the

Stability Booklet

.

I

n

a

ll l

oad

i

n

g

cond

i

t

i

ons

w

here

the

stab

ili

s

i

n

g

systems

are

i

nc

l

uded

,

the

system

shall

be

tuned

to

the

i

r

w

or

ki

n

g

l

eve

l,

accord

i

n

g

to

des

i

g

ner

s

p

ec

i

f

i

cat

i

ons

based on

vesse

l

ro

lli

n

g

p

er

i

od

.

F

or

stab

ili

sat

i

on

tan

k

s

,

the

fu

ll

free

surface

l

oss

shall

be ta

k

en

i

nto

account

w

hen

assess

i

n

g

the

vesse

l

s

stab

ili

ty

.

R

o

ll

stab

ili

sat

i

on

systems reduce

the

stab

ili

ty

of

the

vesse

l

and

they

shall

be

i

nact

i

ve

for

a

ll

stab

ili

ty

cr

i

t

i

ca

l

o

p

erat

i

ons

.

S

tab

ili

sat

i

on

tan

k

s

shall

be

k

e

p

t em

p

ty or fu

ll i

n

such

s

i

tuat

i

ons

.

4

.

6

I

c

i

ng

I

f

the

vesse

l i

s

en

g

a

g

ed

i

n

w

aters

w

here

the

p

oss

i

b

ili

ty

of

to

p

-

s

i

de

i

c

i

n

g

may

occur

the

Maste

r

shall

ta

k

e

act

i

on

as

deemed

necessary

,

e

i

ther

to

remove

the

i

ce

or

at

l

east

to

k

ee

p

i

t

to

a m

i

n

i

mum

;

bear

i

n

g

i

n m

i

nd

that

the

to

p

s

i

de

i

c

i

n

g

shall

adverse

l

y affect

the

stab

ili

ty of

the

vesse

l.

Vers

i

on

SF(BOS-

P

RD-0

7

.900

6

01-

ver

.0

4

). O

r

i

g

i

na

l

date:

22/0

6

/2012.

Vers

i

on

date:

3

1/12/201

5

.

Va

li

d

vers

i

on

on

l

y

on QM

S

s

i

te

.

Uncontro

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

.

Va

li

dated by:

BOS

Qua

li

ty

R

e

p

resentat

i

ve

.

11 / 1

3

345