TRAWVLER DESIGN Thesis

7/23/2019 TRAWVLER DESIGN Thesis

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MASSACHUSETTS

INSTITUTE

THESIS



TABLE

OF

CONTENTS

PARENT SHIPS

Dimensions

Weight

Statements

THE

NEW DESIGN



TABLE

OF CONTENTS

Stability

Curves

Integrat

Stations

for

Stability

C

DISPLACEMENT

SHEET

DISPLACEMENT

AND OTHER

CURVES



TRAWLER

DESIGN:.

PARENT

SHIPS:.

JEANNE

D'ARC

AND VILLANOVA

LWL 123.05'

24.00'



WEIGHT

STATEMENT

OF

PARENT

SHIP:

weight

of

hull,

and

hull

eng

outfit,

crew.

propelling

machinery

weight

of

fuel

weight

of

water

and

stores

paying

deadweight, permanent



THE

NEW

DESIGN:

TRAWLER

TO

FISH

IN

THE

SEA

CREW:

34

men

CARGO

(FISH

AND

ICE):

270

tons

CRUISING

RADIUS: 1500

miles



w A r

31.97,

1.00

r

9.67

1.00

1

187.82

1.00 1



CHANGE CRUISING

SPEED

TO

12kt

A

273.6

x 1.00

71.3

x

1.00

31.97;x

1.190

r

r 1

r

W .

W1.

1



CRUSING RADIUS INCREASED BY

25%

A

Wvao: 283

x

1-

w6 :

72.9

x

1

we':

38.9

x.1.25

r

283

r

rY

72.9

YV

r

-

48.6

yY3



CREW

34

AND

PAYING

WEIGHT

INCREA

A2

A

270

i87:.82

293

x 1 x r

74.6

x

1

x r

1.443

293

74.6

we,

wz *



r=

1.372

wj

293

x 1.372

w~-

.

64.6

x

1.23

w', 49.8

x 1.23

Wd'

19.24

x

1

w ' = 270

x

1

r-=

1.234

402.0

4

92.1

4

61.5

19.2

270.0



7

:

B



At

11

kt

V

-=23

l

=

23

x

406

9230

EHP

=

.003071

x 923Q

x 11 =

312



Summary:

As my ship

is

going to

be

a

different

condition than

the

no Icelandic parent

ship

becaus

convenient

parent

ship

as all t

have been

bought second-hand

an



Now

I

would

like

to

group

the

w

following

groups:

w - hull

and hull

fittings

w

=

propelling

mach.

w37 fuel

and

water



4-

.4/

875

1.005

1.001

1 n

)rv

.

156.1

900

1.033

1.012

1.022

159.2

92

1.

1.

1.

1.



1

4

.

I

I

U

T

7

~

A

l

7

7

7

-

'

7

7

7

7



Principal

Dimensions:

4'

874.5

870.6

1.005

/

:

1.001

a

1.003



RUDDER

CALCULAT

IONS

I

use

balanced rudder--s

L x

H

a

156 x

12.3 *

1918.8

My

parent

ship

has

a rudder

ar

and

L x

H

is

123

x

12

-

1476



FUEL

OIL

CONSUMPTION:

M. E.

Vol.

1,

page

3 gives

for

Geered Diesel as ,"'9

/2,1P

at 1000 SHP

In this

ship I have

two 25

Diesels

to

drive the

generators



/y

131

-

9s

. "o

43

.9s5

178,

/3:

-

/3.2~

Fom

interpolation

between

beam

from

the

curves,

I get'/

=

9.



PROPELLER AND FUEL

CONSUMPTION

Rý-

790 9.62 x

850

- 12970#

EHP

=

.003071 x

12970 x

12

PHP

=

EHP

e x

e

r

x eh

e 1-

*

ehr

1-w

w

=

.23

(PNA VII

p.

149)



RPM

"

165

n

*

2.75

RPM

= 180

n u 3

kt

= .325

7 "

.775

kt

u .273

T

.694



By

this

calculation

I get

maxi

RPM 208

Pitch

z 6.6

ep

max.

a 63.8%

PHP

-

EHP

478

694

ep

hxer

.638x1.08x1



which

I

make

at

aft

of

the

fis

ductivity of the

oil is .1-9 w

to trim

the

ship

I

make

changes

availbble in

the

double

bottom

liver

oil

tanks aft

and the

fue

I



CARGO HOLD SIZE

Area

from

top

of

double

bottom

Station

Area

q

0

18.1

102.8

1

147 1



4

4

~

1

2

.

4

4

1

1

1

4

-

~

*

~

-

4

-

4

T

~

1

1

4

~

V

F

T

-

~

1

.

4

I

i

•

1

.

•

-

:

ý

H

ý

L

:

,

1

'

t

1

ý

l

i

-



P. N.

A.

.V.I gives for

the

sto

as 50 ft

.

to a ton.

Using this

have refrigerating

coils

in th

doubtedly

take

less space than

tons

of

fish I need

290

x

50

*



The

reference

I

use is

McAdams'

According

to

Am.

B&.

Sh.,,

x

.500 channel.

(I just

need

th

plate thickness

is .32"



In order to .find

the

film

coefic

cooling

space,

I

assume

the

shap

rectangular "' x

15' as

the

spee

air.

This

gives

me

RenolJ's

num

shows me

a turbulant flow.

By

using

equation 4c,

McAdams,

p



4b

46 /

. r

<,'•

,•,

ice



STABILITY

CALCULATION

Light Condition

Lever

arms

and weights are

estimated

Item

Wt.

Vert. C.G.from BL

Above

Vert.

mom



P7.s-

x

&

s,

,, 7el

'

9..c

s

/

7"•

/

/3,



READY

FOR SEA

EST IMAT ION

Item

Wt.

Constr.

Wt. 575.6

127

Vet

.Gfoi

Vert. C.G.fromiiL

Above

Moment

14.35

8260

6.0

764

---

,~



- Z- /,

5 .c.-.p

Cc1

.- - Cr

"=

o¢

L/

S"

Qf

t/o

7(4,



LOAD CONDITION

EST IMATION

Item Wt.

Vet

CG.~

froaL

Vert

Abov

SC.G. fromdL

e Moment

__ -_ __ _ -I - --- ~T-



______ -=

4'~5'

S

.1 ~

6/

-

T7e

-- /0 2 Z-



1-7

41

.2: 2-2

.2-222.2

TIAN

'22 ___

7__ 7'

.. .;.. .

---

r--n-L--·T-*-TIT*--

-~-- -

I

i

i

i i

i

f ,

T

I---

CTi

-t-----

i -+• -

4,·'

ý+

+ ý

+'

+ ý +

''

I

H:iiii

77ý

7.

14

r----- ·----

--------

i·



I

4

I

4

~

~

H

~

I

7

T

n

;

1

·~r

~

·

'

-~

'

·

·

'

·

:i

·

·

7

7

.

7

_

I

_

i

1

.

L

A

1

.

2

4

7

4

2

I



STAi3ILriY,

CUIAT.S

T

na

-·----------··-~p.

-.-

·-

,IJ '.. *~.

:112 22d1'flg

Pinal;

.

fS26

F

1?e~adi

~

1/3881

ica

'I-i'·

ni ol GL

D:iff

·:'""..L-·--·I-il-^_

I-

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~.v a

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.~·CILYcL·lla.'

·U~ -- l~

-- · --- ~-

e

ff j

:: f~ssu~idd ~IG

' -~_~

3d;G

/

7



/3

4.~

Final

InitialJ

A3

re a

-694.LArb

~TA13ILTT17U

Check

Rleadi ngt

3W liý

Tnt-

i

LIUýJLL-L

I

I

trilti

)lier

~



d' ICG

f

fl,.STA13IL121

Q

UEUE1S

I I

0

ITno

InM

I

Final

Initial

DiffD.

~F------·----------

Area

Check

Reading

Reading

plier

..



i

cqPnt"r3TT.TqV

( TTPIVa,

. .1

. Q=

J

Ift

13 -f -,.

---

T-

0

Final

Initial

Area

Chock..

9·r

Area .Check..

Reoading

ReadinG

138y

664;a

0

751063:o

-z

36S ~~g

)lior

ince.LnavL:L1lL



59

Ir 65

_ P A C E

-DISPLACEMENT

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TRAWVLER DESIGN Thesis

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Transcript of TRAWVLER DESIGN Thesis