Calculation-of-Displacement-LWT-and-DW BUDI OKE.docx

8/18/2019 Calculation-of-Displacement-LWT-and-DW BUDI OKE.docx

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Document no : 01 - 42 08 071 -ES

Displacement, LWT andDWT

Attachment

Number of pages

Miftahuin!r" D#i

$ri%anta!r"

'ari

re(" ate Document $repare b% +e(i#e b% Appro(e

E*ectrica* S%stems an Engine


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Displacement, LWTand DWT

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Table of contents1" !ntrouction/"""/////////////////////////////////////"" 1

2" b,ecti(e/////"""///////////////////////////////////" 1

" +eference///"""///////////////////////////////////// 1

4" Abbre(iation/////"""/////////////////////////////////" 1

" Description of ca*cu*ation/////"""""////////////////////////"" 2

3" Summar% """"""""""""""""""""""""""""/////////////////////////////"" 7

List of attachments

attachments 1 Detai* Euipment *istcoe//////////////////////"" 4


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Displasement, LWTdan DWT

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1" !ntrouction

1"1" Disp*asement

Disp*asemen (o*ume is the tota* (o*ume of #ater isp*ace b%

the #eight of an ob,ect" )here are t#o factors that a5ect the

isp*acement of the ship& the #eight of the ship components

that can be transforme 6D) an the #eight of the ship

components that can not be change 69)"

1"2" 9ight eight )onnage

ase on the boo;


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res @ +eser(e#eight

▼ @ Disp*acement(o*ume

F @ Shipsisp*acement

st @ et stee*#eight

E @ Stee* #eights

parameter *1 @ 9ength of

forecast*e ec; *2 @ 9engthof poop ec;

h1 @ 'eight of forecast*e

ec; h2 @ 'eight of poop

ec;

oa @ eight of out?t anaccomation

m @ Machineri%#eight

M

+

+$

M

@ Main engines #eight

@ Ma=imum continous rating 6;

@ Engine +$M

r @ Au=i*iar% engines#eight

res @ +eser(e #eight

" Description of ca*cu*ation

"1 Disp*acementa*cu*ation a"

Disp*acement

.o*ume

▼@ 9#* = = )= b

#here : ▼ @ Disp*acement (o*ume

9#* @ Ships *ength on the #ater *ine

@ Ship #ith in the mi*e of ship

) @ Draft on fu**%cargo

b @ *oc;

coeBcients b" eight Disp*acement

F @ ▼= C sea


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#ater

#here : F @ ships isp*acement

▼

C sea

@

@

ships isp*acement(o*ume

"2 9ight eight )onnage

a" eight of ship>s structura*

Accoring to the boo;


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Wst = K x E1,36

$here % & oefisien, depend on ship type

( ()uip*ent +u*erical

Accoring the (a*ue of the number of euipment 6E 9%o*

appropriate as #ritten in the boo;


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So the result of Machinery Weight is WdWr,

W* WdWr

" +eciua* eight

Accoring to $ractica* Ship Design on page 114& for the

ca*cu*ation of reser(es it is necessar% to a #eight"

eight b% 2-I ue to a(oi mista;es in p*anning an

things that might not been inc*ue in pre(ious ca*cu*ations"

So the formu*a of reciua* #eight is :

Wres = 2% (Wst + Woa + Wd + Wr + Wmt)

No# #e ;no# the (a*ue - the (a*ue of #eight abo(e in

accorance #ith the pre(ious e=p*anation& then #e can ca*cu*ate

the (a*ue of 9) b% summing the #eight ca*cu*ation remains the

ship:

LWT = Wst + Woa + Wd + Wr + Wmt + Wres

" Dea eight )onnage



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S @ specific fue* oi* consumption 6pro,ect guie

'$ @ brea; horse po#er of main engine 6pro,ectguie

constants aition of fue* @ 1" - 1"


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b" '>s tan;(o*ume

e shou* consier about the increasing temperature

insie the tan;s of '& so #e a some a*ocation of

e=pansion margins appro=imate*% 2I - I"

)he formu*a& asfo**o#s :

.' @ 66100I

JIK'G C'E0

her

e&.' @ '>s tan;s (o*ume

' @ #eight of hea(% fue* oi*

A*ocation of e=pansio @ I

C' @

0"HH1tonGm ii" D 6Diese* i*

a" D>s #eight

estimation of iese* oi*>s #eight is 10I-20I of

hfo #eight for the resu*t :D @ 20I = '

b" D>s tan;s (o*ume

e shou* consier about the increasing temperature

insie the tan;s of D& so #e a some a*ocation of

e=pansion margins appro=imate*%

2I - I"

)he formu*a& as fo**o#s :

.D @ 66100IJIKDG CD0

here&.D @ D>s tan;s

(o*ume

D @ #eight of hea(% fue* oi*

A*ocation of e=pansion @ I

CD @ 0"8 tonGm

iii" 9 69ubricatingi*

a" 9>s

#eight )he formu*a& as fo**o#s :

9 @ S9 = '$ = time to (o%age = constant aition of fue*


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#here&

S9 @ Speci?c 9ubricating i* onsumption @ 0"HgG'$h

onstants of fue*@ 1" - 1"& ta;e 1"4


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b" 9>s tan;s (o*ume

e shou* consier the increasing temperature insiethe tan;s of

9&so #e a some a*ocation of e=pansion marginsappro=imate*% 2I -

I"

)he formu*a& as fo**o#s :

.9

0

#here&

@ 9 G C90

C9 @ 0"H tonGm

i(" resh ater

a" onsumption for cre#

fresh #ater neesestimation @

b" ath an *aunr% nees


c" oo;ing nees


" Machiner% nees

1" main engine

20

200

4

;gGpersonsG

a%

;gGpersonsG

a%

;gGpersonsG

a%

fresh #ater nees estimation @ 7grG;h

2" au=i*iar% engine

fresh #ater estimation @ 0"2 from main engine>s fresh#ater

)ota* fresh #ater machiner% @ f#

ME J f# AE )ota* eight of resh ater

@ consumption for cre# J bath an *aun% J coo;ing Jmachiner%

)ota* .o*ume of resh ater

@ i(ie the tota* #eight of fresh #ater b%

its ensit%" (" re# an $ro(ision

a" cre#>s #eighttota* cre#s @ 20

persons a(erage #eight of cre#s

@ 70 ;g

b" pro(ision>s #eight


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a6erage pro6isions needs >g;person;day

eight )ota* of Ship Supp*ies

tota* @ 'E0JD0J90Jfresh#aterJcre#sJpro(

$AL9AD @ D) - supp*ies tota*


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3" Summar%+? @A@/B?+ SCM"? R(SA/

1 Displace*ent olu*e ▼ :42,12 *3

2 Weight Displace*ent E :83,1 ton

ight Weight /onnage W/ 3:3,8 ton

4 Dead Weight /onnage DW/ 83,4: ton

Payload 3, ton


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Attachment 1

Detai* a*cu*ation of Disp*asement& 9)

anD)


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Estimation of

Displasement,

LWT dan DWT

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1" a*cu*ationDetai*s

Principal Di*ension

ontainer Ship

pp '

$l '

" '

7 '

/ '

5 's '

'

112,

11,8

2,

,3

8,

,82

18,

,4:

*eter h dec>

*eter Po$er (ngine

*eter

*eter Sailing distance

*eter Sailing ti*e

>nots

*;s

2,

3:

23

1487

12

0

*eter

>W

7P

n *ile

7ours

alculation of Ship's Displace*ent

olu*e Displace*ent

▼ $l < " < / < 5

:42 *F

Weight Displace*ent

ecause the ships operating at sea& then the (a*ue of

rho6ensit% #as use sea #ater rho6ensit% :

G 1,2 ton;*F

E < G

:83,2 ton

Deter*ination of the nu*5er of cre$

!n etermining the number of the cre# shou* be as eBcient as

possib*e& as this a5ects the siOe of the room an the *imite

amount of supp*ies of foo an fresh #ater" actors that inPuence

the t%pe of ship& *arge ship& the number of ,obs ser(e b% thecre#& sai*ing routes& sisitem e=isting automation on ships& an

regu*ations of the countr% concerne"!n etermining the number

of cre# that is use is 20 peop*e"

$a%*oa

)he pa%*oa is the cargo on boar an pa% 6ma;ing mone%" )he

formu*a can be use to etermine the pa%*oa is :$a%*oa @ D) - 7$ro(ision

So to be ab*e to ;no# the pa%*oa on the (esse* #hich isesigne #e must ca*cu*ate the ?rst 69)& #hich brought

supp*ies an eight 9ight#eight


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Estimation of

Displasement,

LWT dan DWT

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9ight #eight 69)

Q Weight of ship's structural

@ccording to the 5oo> HPractical Ship Design chapter 4;4.2.4H5y D#M

Watson, to calculate the $eight of the structure of the ship can use the

for*ula pernde>atan as follo$s%

st @ = E

1&3

$here % & oefisien, depend on ship type

( ()uip*ent +u*erical

@ccording the 6alue of the nu*5er of e)uip*ent -(0 yold appropriate as

$ritten in the 5oo> HPractical Ship DesignH5y D#M Watson, referring to the

1 RB+@ -ecure Ship Design and Ship /heory, Poels 7erald p. 8:@0 $ith

the follo$ing for*ula%

E = L x (B + T) + 0,85L x (H - T) + 0,85 (l1 x h1) +0,75 (l2 x h2)

pp

'

7 '

fore '

7fore '

M@B+ D(& '

7 M@B+ D(& '

D(& @ '

7 D(& @ '

D(& " '7 D(& "'

D(& '

7 D(& '

D(& D '

7 D(& D'

na6 '

7na6 '

112,3

,

2,

2:,

3,

,

2,

,

2,

,

2,

,

2,

,

2,

**

* -the length of forecastle0

* -the height forecastle0

* -the length of M@B+ D(& 0

* -the height of M@B+ D(&0

* -the length of D(& @ 0

* -the height of D(& @0

* -the length of D(& "0

* -the height of D(& "0

* -the length of D(& 0

* -the height of D(& 0

* -the length of D(& D0

* -the height of D(& D0

* -the length of na6igation0

* -the height of na6igation0

l1 < h1 the length and height of full $idth erections

l2 < h2 the length and height of houses

l1 < h1 fore < 7fore

2 *2


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Estimation of

Displasement,

LWT dan DWT

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l2 < h2 -D(& @ < 7D(& @0-D(& " < 7D(& "0-D(& < 7D(& 0

-D(& D < 7D(& D0 -na6 < hna60- M@B+ D(& < 7 M@B+ D(&0

18 *2

( < -" /0 , < -7 ! /0 , -l1 < h10 , -l2 < h20

32:,

@0&03

6for container ship

st @ ; = E1"3

@ 21H1 )on

a*cu*ation abo(e&is for ship ha(ing b @ 0"70 to 0"8 '" ut&this ship ha(e a

b @ 0&31& so that neee to o a correction :

correction of b @ b J 6 1 - b = 60&8' - ) G )

@3&332

)hus obtaine the #eight of stee* :

st @ st = R1 J 0&0 6b0&8' 0&7T

@ 2844&4 )on

Q eight ut?t an accommoation 6oa

or hea(% out?t an accommoation accoring to

$ractica* Ship Design& page HH chapter 4"4& it can be seen

the (a*ue of oG9 =" or container ships #ith 9pp 112 m@

0&

oa @ the (a*ue of6o G 9 = = 9pp =

@ 372&00 )on

Q $ropu*sion machiner% #eight

ase on the boo;


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4""4& Main Engine #eight can be estimate #ith the fo**o#ingformu*a :


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Estimation of

Displasement,

LWT dan DWT

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Doc" No : 01 - 42 08 071

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page" No : 11

@ 12 6M+G+$M

0&84

'$

M+

@H00 ;

@ 1H&3 ton

rpm@

210

Q alculation $eight of re*ainder -Wr0

ase on the boo; "Principal Ship D!in"#$ D%&

'a!n pa 110*hapr 55 & #eight of remainer can be estimate #ith

the fo**o#ing formu*a :

'r = =6M+U0"70

= 225,2 n

@

0&3H

6for bu*; carriers an genera* cargo ship

Q Weight of generator set -W*t0

ase on the boo; W of

3 sets. So the 6alue can 5e calculated as follo$s $*t %

Wmt = 0.72(MCR)0.78

= 71,00 ton

Q alculation of Recidual $eight

@ccording to Practical Ship Design on page 114, for the calculation of

reser6es it is necessary to add $eight. Weight 5y 2!3I due to a6oid *ista>es

in planning and things that *ight not 5een included in pre6ious calculations.

Wres = 2% (Wst + Woa + Wd + Wr + Wmt)

= 1,42


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ton

Q alculation of W/

+o$ $e >no$ the 6alue ! the 6alue of $eight a5o6e in accordance $ith the

pre6ious e


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Estimation of

Displasement,

LWT dan DWT

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Dea #eight 6D)



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eight of Marine Diese* i*6MD0

MD @ 0"2 =

'

@ 21&4 ton


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Estimation of

Displasement,

LWT dan DWT

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a*cu*ation of tan;

(o*ume MD Se*ecte :

t%pe of D @ DM-A

C D 6at 1V @ 1 tonGm

.&D/ @ MDG MD

@ 24&20 m



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20 man 70 ;g


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Estimation of

Displasement,

LWT dan DWT

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Doc" No : 01 - 42 08 071

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cre# @ 1&4

ton

4ih al cr4 = al cr4 x h a6ra 4ih cr4

#here :

por(ision nee @ " ;g Q ;g

GmanGa% por(ision nee @

;gGmanG a%

S

e

a

t

i

m

e

@

p

r

o

(

@

&00

0&0

a

%

ton

Q resh#ater nees

Supp*ies of fresh #ater on the ship in this case is

ca*cu*ate on the ma=imum eman conitions& name*%#hen the ship set sai* an #hen the ship #as oing *oaing

an un*oaing" )he nee for fresh #ater on boar is i(ie

o(er the nee:

a" Eat an rin; of

cre# b" ashing

an sanitar% c"

oo;

" oo*ingEngine

!n the esign of p*anne:

Sea time

@

a%


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9oaing an un*oaing @ 2 a%

ase on ata use to etermine the nee is :

a" Eat an rin; of cre#

6f# onsumption @

10 ;gGmanGa%

6estimation bet#een 10 - 20;gGmanGa% )ota* time @ Sea time J

*oaing un*oaing

@ 7a%

X ater Nees @1&4 ton

b" Sho#er an #ash 6S

onsumption @ 30 ;gGman 6estimation bet#een 30 -200 ;gGmanGa% )ota* time @ Sea time J *oaing

un*oaing

@ 7&0a%

X ater Nees @

8&4 ton c" oo;ing

6f#c

onsumption @ 4 ;gGman 6estimation bet#een -

4 ;gGmanGa% )ota*iOe time @ Sea time J *oaing

un*oaing


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Estimation of

Displasement,

LWT dan DWT

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Doc" No : 01 - 42 08 071

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page" No : 15

@ 7&0a%

X ater Nees @ 0&3 ton

" oo*ing engine

- oo*ing main engine

6f#, )a;en 6c @

;gG;h

6coo*ing reuirement estimate bet#een - 7 ;gG;h

f#, @ $ = c = 6SG.s = 10-3

@ 2&4 ton

- oo*ing au=i*iar% engine 6f#ae

)a;en 6c@

0&1

;gG;h

6coo*ing fresh #ater reuirement estimate bet#een 0&1 -0&2 f#,

f#ae @ f#, = c

@ 0& ton

After ;no#ing the #eight of fresh #ater for each - eachnees it& can ;no# the tota* reuirement of fresh #ater

uring tra(e* an han*ing that is eua*

to:

f# @ f# J f#s J f#c J f#, J fae

@ 1&0 ton

rom the ca*cu*ations abo(e reuirement can be further

ca*cu*ate the tota* #eight b% using the fo**o#ing ca*cu*ation:

tota* pro(ision @ ' J MD J 9 J cre# J

pro( J f#@ 144&34 ton

a*cu*ation of $a%*oa

After ;no#ing the tota* #eight of supp*ies an ea#eight

ship& the (esse* can be ca*cu*ate the amount of pa%*oa:

$a%*oa @ D) - tota* pro(ision

@ 8&8 ton

)%pe of container carrie @ Y18

ton 620> Zum*ah ;ontainer @

$a%*oaGcontainer

@ 08 ontainer


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So&tota* 20> container #hich can be carrie is 08 )E[S

Calculation-of-Displacement-LWT-and-DW BUDI OKE.docx

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