On the motions of an ocean car ferry. Part I: Model tests in oblique waves and theoretical calculations

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On the Motions of an Ocean Car Ferry

(Part I)

Model Tests in Oblique Waves and Theoretical Calculations

By

Akihiro OGAWA, Koji NONAKA,

Masahiko Mom and Toshihiko SARUTA

Summary

Large car ferry boats of a long distance service around Japanese adjacent seas are

rapidly increasing in number, and because of their special ship forms, their performances are needed to be investigated for the purpose of keeping their safety operations.

The paper presents a free running model test result in regular oblique waves at the Mitaka No. 1 Ship Model Experiment Basin in comparison with the calculated result by strip methods, and a towed free roll test at the Mitaka No. 2 Ship Model Experiment

Basin for obtaining the roll damping coefficients, with a 5 m model of "Shiretoko-maru" (in service between Tokyo and Tomakomai, about 1,000 km).

In the free running test, pitch, roll, yaw, yaw rate, rudder angle and bow accelerations

(vertical, transverse and longitudinal) were measured. Theoretical calculations on the above motions and accelerations (except longitudinal one) were carried out by strip me-thods separately with pitch and heave, and with roll, yaw and sway, to compare with

the experiments. The agreement between experiments and calculations were proved to

be good on the whole.

In some special wave conditions in the experiments, when the encouter period was

nearly

half of the natural period of

roll, unstable roll occurred. During the

unsta-ble roll of large amplitude, irregular bow accelerations were observed. From the

analy-sis of the acceleration, it seemed that a big wave impulsive force was given to the hull

in the vicinity of bow.

On pitch and roll amplitudes, the nonlinearity to wave heights were found to be

small.

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Remark: Values in(. ) are those of towed condition which are

different from those of free running model.

( 345 )

Length b. p .

Model ship I Actual ship 142. 00 m

L 5. 0000m I.

Breadth ( moulded) Buss . 802805 I 22. 80 m

Breadth ( designed W . L.) B., . 7746m 1 22.00 m

Depth ( moulded)

D..

1

8. 00 m

Draft ( designed) d PALO .200701 5.7001

Tested condition:

Draft d . 2110. 5. 99 m

Displacement A 434. 3kg ( 437. 3kg ) 10, 200 t

Block coefficient c ,, .531

Prismatic coefficient

c,

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c.

.800

Midship coefficient Co .842

L.C.B (after 'midship) I cb 3. 831 %

Metacenter above keel KM .415101

Metacentric height GM . 052m

Longi. radius of gyration

Trans. radius of gyration

Icy, /L .247

K.. /Buss (- 4114 )

(2.61sec)

j Natural roll period Ts 2.70 sec

Propeller:

Diameter 135. 56mm 3, 850 mm

1.0 (Variable)

Pitch ratio 1.0 (Fixed)

Expanded area ratio . 57 -57

Boss ratio .319 -319

Rake 0 0

Pitch angle range 50

Number of blades 4 4

Direction of turn Outward Outward

Rudder:

Number 2 2

Area ratio (incl. horn) 1/29 1/29

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=

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Fig. 3 Roll amplitudes

= 9C° Fn (7'3 C1-3. 0.5 ox=150. 1.0 ...

...

1.00 0.1 0.2 _n X= 30° 1.0 -ct All.= 240

co ---

1-5° & ...

0.5-1.00

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( 349 ) g 4 3 2 1 5 9. 4 3 2

le

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---.--....

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0.2E0 0.3

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Fig. 5 Yaw amplitudes Fig. 6 Vertical acceleratioeat F. P.

-X.150° X.se --- 2 00 ---

---- .75

---20.2 121. 0.1 0.1 0.2 _{En co} xr9e 0.3 0.2 2.QQ -5_11L1.25 1.00 _v_5 0/ 0.1 0.2 En 0.3 0.3 0.1 0.2 0.3 0.3 20. 0.50 0.75 A 1.00 1.25 1.50 2.00 0 2.27

A /L Test Calcutat ion

0.1 0.2 Fn C1.3 0.1 0.2 E0.5 4. 0.4 0.3 0.2 0.1 0.5 0.4 0.3 0.2 0 0.1 0.2 Fn 0.3 - 2- Ace _{= tee} 0.5 .3 0.4 0.3 0.2 0.1 0 20.2 o. 2 0 A 1.25 'Yaw 30° 0.11 '0.2 -0 L

if Test: 0.50 0.75 1.00 5.25 5.50 x' 2.00 0 2.27

Fig: 7 Transverse acceleration at F. P.

:01 - 0.5, 0.7 ;110-6 0.5 0.4 '20.3 0 0.2 10511 Fn =0.25 r140'=0.4,m ... iscg ---120: Q. 150 9

....

9 0°' 0.5 1.0 2.0 xiL 2.5 i` 1-, -2. 0.5 t 1.5 2.0 A/L

Fig. 8 Motioils and accelerations,

(351) 0.4,1 0-Ace X.Iscr 1.4 5-Acc in 0.3 _irs h li unstable roll at x =11110° ff'To. 4.1 0. 2.00, 1

t

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sd'

( 352 )

Phase (to pitch

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g1451iV)RibRo)

RiacoblrtVkik

< ts 75&, Z1f6W-c'

0 RP smotatnTitLtt..

1-E, mt--ect

--cozz-cf, cipt,75/C a 1,4 :/7'75i l:-C4Felikit'l

Zt0)--eZo AG40)Mire3ct--4-zg-At3DicaT,

/±l'ANYA0DbNorElla-414M--fll, ®VrTlt1aL

3.4. 4 Af1-6..h-PlAiAl (Fig.. 6 Fig. 8)

ZWALII-AT-{ThLal*i,-, cliNtZRO. 6,)*

bi-Nb-Pg lc arc 3-11tic.Zgrz,fEllIttZri`,7%Pis

V'eatkMgoVE--elt

to. Fig. 6

x=180° 0171iP 3-}Z ch

al-A-04Lic z Vff.

41!:.11ti < filtalc:±r-coZNISE-(7Z. ts 1-47-Ac e n".-flJlJz ETINAgE ap coeTi_ ( 6 ) e _g lp : C. G. b,;iiriA5ETTt-t -c'o)*WAIE x=9(ropa,4,-,J2431Attjan < 1zfegNITI;11.,

0).t 5 tsiirttbst

?DflitZTIT c. Gti,tz.

.3. 4. 5 VItttlitg. (Fig. 7, Fig. 8)

IEVJartoffirTilit0A/MMcAKQTOZw

traiRPbrtaiA0401-clt.frtOWN

K, Agt

lc.t6Ctt !1t:0o

L,-C x =150°, 180°0Mbl;

; tlts<t 5 lc, TZTz/

MPAMPAziA...t )KA -co 60 x=300WPDVArlcL9-14,1ALMW:L

tilaata,--coZAt 1 2 )1/0±APfLnercZo

(1),:t

lctlyi3115Ell (

C'J5 7A

7_ ZiAi L 5 4t110-FicT

ZN), mc

< fatztirhl1=4-n

z

--Ot3-}bi,

°°@-1-1124

( 7 ) IR 7.kb);)JiAlEgi-t ToDke.101 \ 0.5 _225 \\,-F sO'

9 Phase angle to) pitch

) a Fig. 0.5 1.0 a p /11c)§7'11-6:-_77:L,

vomil

AammuwAsiowinemoraminwar Emma=

amemwammarsmanummorammormaimmoma

71riaELIVA1111WA11111INMMIIl

MEM

cn.

mum

R-oLL IT

MEM

Yaw rate

Nom

_,-,

MEM

AllPHIMMINEUMN

I. MIN .:.

MEE

WOW

-41111111111MAINSIII/A1/1111

1.11111111110=1

132111MICAMFAIMI VIMIEVIVAIMN

IMMENEMIll

ct r, Vertical Acc.

NNE

1111.111111111111MINIMIII

LIIIMMIMINEILIERN

17111!.MTA

MEN

11IPMIll

INtNEN111.7111111/111

IN11111M111111MMEMEM11MEN

ITIIIIIMIWAILIMIII11111/111MI

RIFINMERSINERVIMINIMIIRY

LTAQ

1!

1

r

! V II En W.1/46.740171111111MIL._

d

ongi. ACC crq

Fig. 11 A record of irregular acceleration in unstable rolling

(353)

IT

L, V-1451SRTizt )kbs)co±,1,1-1.S'L,

OD.WiiC it,

lA1nL"

L1.4)7!3Z.

3. 4. 6

N4roknitgr.

rilattAz, ti-v-itubst; <ZWZ.06-ts

aye, M Itvgotcv, mrfoLL-c-Gt_ETNAtto&-McgMc

tillt1/10--Zo e

_L-Ftlitabse v5-cLLg_i=z;b-g-ZL, P" tygl 3. 4. 7

fit*

(Fig. 9,) Y01-1-Z.ft*El -Tr:

ob& Fig. 9 ±.-FbllArVi 07 Hri4c

AEL.,--coZbi,

37,atAttite -1-LU

YMOZZ.71±XL,--c-tozo-yee,

c Lit

ZRLM.XL01,-LIVDAVR.H.--ct, _E

TiglittX0a4t141MR0tifs-1 Ato-c.a<Ji'o-colZ

(354)

T.N0.117

Numbers on each pdint _-o

are marked at every

.001 ;Seconds. 26 25 _ 24 r 0 8g 6 -0.4 - 23 2 cv >. 3 /1.2 0.8 0.6 0.4 02 14 / L = 75 X. 1500 II-1w=1.2cm

Vo = 1.2 0 mis , V = . 6 3rrr/s Te# 1.32sec

Fig. 12 Relative orientation/of model to:waVe

.6

12

Fig. 12 An example of irregular acceleration at F. P.. in unstable f011itifg.

17 _{0.4 06.} 18 --> Stb. ward Transv.Acc. -0.2g 20 7 0. 1.0

jP0)i5 74-1,60

3. 4. 8 AVJQ311. ZtJYA-g 1,-C Za--DbNOD*pric, ts111753i-EM 11, tz.-z, Fig. 11 &IRA' 12cm (3. 4m), L=0: 75, 7. =150°, Vo= 1. 20m /s OD oDE01#1.1-e, Th'n1A0) 2 4-`)))7=1M-Cf,. cop

tg&I Fig. 12 ICTT:tbs, ODtVdttg.INfg&IIYI-C' 6 Z. Af1431Emb

".1_,'"CtO Z. tte. COD ct 5 tSWit ODLCI;VCTil"

Wiriltiltbs t.,' bid--c <,, Tt T=I --)11bAlgC

IN 20°

5 istAl&--cL--c-iots o o

Z. Fig. 13 d Fig. 11--e411,111:13.ettE t.: "C. t/1Z

tt

kcRtao/P.-Alchz1.,10ts)3411)MT604-thi.c, b11--)bN60

otolato:k

lamb

0)

on331,7:d-cc---Do-c&op,et -5 cc.pdUTh L-cmir.. 1,--c-i-J.L0 Fig. 14 4;f:t ot -5

F, SilsoDN

Fig. 14 Simplified model of bow acceleration due to impulsive force.

P 0/1S.ILNAlizt.7.6iL, 1 coamc6zNiktot

iclmiiiiAit a bl'L

0 mopm-1.

INRIgtzt- mz,

tNtle14.a-w

(l+mzY2=-F g

(Ky7,2+1f72)#pF

(&) a =2-1-1d7 a

F _

+ 1.p

g

l+m, K552

(9)

WC, tbs S.. S. 8 1/2qid&CNtr_ L,-c m2=4, K'=Kry 1 P/L=0. 35 a/g=1.

Ll-taf F=212kg

Z.. 6/litinAgEN-oltsz.

itTAIC 7.1,4"C'&11S0 2:dMiN75-C 619,

kl-^-AalfA37:1 Zbdic ot,tso

t,

V.&

tsVako

tsgiStb43111-) L. tfi)-1

,;75NT 6 Z.

tstsr,j,R (x=180°) gz'i2

-)L

WinnAltoVIT

aNitam

Z.

34.9 itatiAT

Fig. 15(a)---(f)&12aX12cm (Hw I Lt 1 A42)o±gAo,,

L t.:.

o-c

Z. 111-5.1.0 c1Z54,101.141114117. -

- 'Z'71,MODZJI-L

tRittota,of.igEtc,

,2N-r L

vo Itts 1;tstoo-z,, igidegODPAP

-;:f:tiCi.Lt Z. t tzElilfittafg-Ft

<

ilf1--eNIXILALt{g-FWc

Fig. 16(0^4) rr31 &ALI ODALCET iC

-1-,VLA-M-C1,tztoT660 5UstAb; tl, 'f*L L/C

Ailopili'fr'faDMAltfETW4stS t, Not 5 tc.1,i, L,

*Art (vo/c et

Plts:15,11-1,-co -5 T66751, c.

A1diViTE0D- -- apt4t1. oDB*A CDT, 41.-D

0

Lt 2:l0 Z. 111*()) [Malt

ay-A'

Abi;)c#0)3119-zg-FolVirl-A-7.T:t., VD-C 6Z.

Fig. 16(f)4I C 41. I; ODLLI3K-113.1451-- Utz t OYU, 2V.L

=1. 502ToDEttottRa T'A1tiFIT753* <z

C.

ZLL,

ODALVIITMRA1Ct L-cia4V9Mii

iMg-F751.1.11,g;)

<t

,E11-)11,6 titV4--e6 L. Lot.:295,

offoAalt

< Sea margin bs'E <

tt

4,, MAO* I; 6 Cra"±PP MiltirAttilAR

4.1 MA:Ike

&.-xfois (400m*ps), --L7 OD tAnsillopmga,

/Z.! 1,,f/4710r(704)::04 141-1.)- Z ct ic Ltzb3,

ki-aliggODEIER0D15t=1`44.t , 4DTbNtSX-751t Utz. C.-11.; &I Table 1 4;f:1,--C *4*MifirC&I1di

taft- -2< :/

ilir1Z --c

't

.t

Ala

-( 355 ) (10) T, lC, 1 L

1; 1.0 0.5 (356 ) 3e se Course angle Ca) COurSe angle (b) (0)1 EhrelkolICI4tA t.,-c 2. 61tP4IC apiXtra';'11:.*1 1 0)16:

Lt-_,[kgoismiA. Fig. 17 optl

-MODA_ItVa 0

0. 4m/s tli; 0. 1m/s21 5

t-eLL,

w

OfttItc.t.-D-Ctt6

Fig. 15 Speed teduction in waves

Course' angle-(d) V .90° Course angle Ifir 1-511231Lkc,.t--D -ct-? ;o,.>

igstc n=coVig b& 1/4 iCia < tS V=

0. 975, 1.012, 1. 050 m/s

i10 LJ

nittus

tn5ic_v_g_ z my)] )i,fr4 12.

130 2

)14fJ

aL7 9 .F;

t 4 1=141)Alttop,$)J--taK_E.0)1, 71/caau

uto

11 0 -1 0 o x rg - Ill I ( I An.. I25 , l2in, o V..1.20 m/s a V.1.54m/s/ X V.=1.79 m/s 1 X 1 A/L=0.5 , =120m 0 V.=1.20 mis a V. =1.54m/s X V.=1.79'm/s o o9 3../L.3.5 , 12co, o V...1.20 m/s a V. =1.54 m/s x 'V..1.79 rnis. I 1 ''''14111.111111111W is , , AIL =0.75 , 14.,12cm o V. 1.20 rn/s A V.=154 m/s X V. 1.79 51315 o ii t 1 Ail=2.0,14,12 cm, o V..1.20 m/s A V. 1.54mis isV. =1,79 mis I X o x o I All .7.0 , 12cm a Vo 51.20 mts a Vo 1.54 m/s. X 'Vo 1.79 rnts 11 30° l60° 90° 120°

cP 30° so° so* 120° 1ge

Course angle 30? 60° 90°' 3zcP 158 Itcr Course angle arf iso° 30° so° so° 120° Is / s a. (e) . 1500 1.0 0.5 0.6 0.5

I

1.0 0 1.0 1.5 He/I1 50 1/40 1130 He/ L 111./ 1/50 10 Wave heght cm) 1/50 1;40 (e) 1/40 I . /5 , (CM) 1/30 1/30 20

Fig. 16 Effect of wave

4.2 Utfi-'131.riMgMA 4. 2. 1 litM;)Artg

+24+40 0

(11) "elt05-GIELX, =2a (12) L.-C*6tz )1,R=9/NL Fig. 18 iC7Ts.t0

El* t_.440)tn5?c, H13-44cE l'; IaTt!I Iv5-_{J-iklOpiraMMZ}

7 .

-

*MI 'T-7 14 Ma0V) RC; jaila) 0.5 1.0 1.0 10, AIL./.5 ,X.113Cr 0 ,=1.20 mis V..I.54 m/s 5551.70 m/S 5 Han- 1/ 50 1/40 10 Wave height , cm, 15 Wave t, 9.(a.1 (f)

height on speed reduction

1/30

Rb'i;N:t

titzfih (3Vc5ekl;t)

LJO=

Jill®

'ark- g XZ' tz I) Ow 0)5' ;L-N.M.fifOR LtziAT 4. 2. 2 g4MCA-10E

Vi 41 0 Eli 7 )t,

ODI-M4C.t a O. + b Onc2 (deg) 495=10.1 Sbn+ii,

I

(13) (i),.=(sb1/i+195.+11)/2 i/ 611/X, ti,i)4

70 a , b5

Gt/, ( 357 ) 20 20 I . ---- _... ...-.. ....----' I --- tso X

-- -.--Ail .1 00 8/1 so All .2.25 (d) 1/ 50 1/40 1/30

---A/L.2.27 x 0 V,1.20 m/s V.51.54MIS X 401.79m/s 5 10 Wave height H. an ) 15 20 15 20 1.0 .0 1/50 1/40 1130 20 5 10 Wave height, cm) (e) 1.0 (b) 10 Wave 01

-

1.25 5

-0 . A . /113.0 0 1.54 Va.1.79 0 1111.1.25 0 .1,20 . .1.54 m/s .1.79

st.

^ 2.7

-ILI 2.6 S. 25, 0), ru 0.2 0.1 (358) 0.1

2 ) 40Daliii00-"c4i2ae= boo' (Jø +a)

-C, cop.t.5ICts;fs..av

14..W.tg,475,;a/.1\-_-_-A/ccti)t6-coz.

Fig. 19 IC ice 31a). Ka, ICA opArtic

Fig. 20 IC ice. ,OD

4. 2:3 iV%I.k

NA/ad

z. cb =1 \ Tcb.2 _{(deg) (16)}

"eXfp'Vl.Z75, (13)4-e*?67t a

b 4AR

_

Fig. 17 Model set for free roll test in towed

condition t.0 Lt-I-TOMi*fAZaz.Y;;E-0VAMJA, 95. 01MITAL 1.,-c*a5ZC.biT 0 N + b (17) gm

N

*P1 -4-ZALtiE < L4b4DbNZ. Azkifcc-3PtZ1441c} 0.2 A 0.1.

0.2

0.3.

Fig. 18i Linear damping coefficients and natural roll period

onverted into model

03

Fp

_o 0, 0 9 0.0-0o 0 0 , 0 , 0,

o' . 's 6 '' - ', i ,

8 0

8

Model Roll axis . Kxx

o Car Ferry G 0.411

o ,. (with propeller) Free

, A " (Actual ship in service), ..

x Container Ship j G 0.355 14' J-EE14-4,,sc,,k.zzirait-mcoptucktfopfa + bsb.) (Om. i-ãd) (14) (15) cbm=10° RY 20° 0)n-404-AN10,, N20 Fig 21 iC;Icto

a, b

R*Arli12°---13° .4t-fro7N i;

t:

to-c6,57511;, N20 z-Do-ctt91.1f/cck

4.3 41X

Fig. 18 IC..t

t -7

gmayfolck

tf4.-100-40. 05-0.06,ilfr-1110 n = 1 /4IC a (12) 4LP-Jaic 6e.T&rLi-t-La, lie= 2cr0 =Ka+r we 2

_a,

_2b

KA= 2a e= : 0.3 0 0 L a

-L, Fn

0.3 0.2 0.1 0 -0.1 0 1140)SEZ.L.Prt-MODWCii"*OpitilLODAV4,0Digt,U, 7°T2 MillsAT2nAth-CtOZL 7511.

witorMtiorincctiER-J- z)i

PL-AfrL GtLZ. %4O0DIA753-c,c,PdH z 111E13 uryj GbN-etst,,75,', VIMIO0).0AftWig--c't t - 7" .N

L-c tzb tc, AA1--c2EZ u-roybt-Ftilha6

trCOZ L,jfl1-9 ./...h5--Do-c0Z,

VIctlg11175i ZL;k_GI-LZ.

AvmAgspALL-co4mq, Tautt,n

vitz-mgr( LVs oV41-c

c

ct Fig. 19 --E'r91

755, - .0)-14.V4-11Bct n=1./4 019i

253Nt-co-c, c

i.5.7_2 ap A,* N,g4 op MO 7T;

U-cos.

Fig. 19 Effective damping coefficient and its linear and nonlinear components in comparison with linear damping coefficient

N ,ARC1*--;i1.-*At 0.01 Tf,tiE.VPAALtt

0.02 ct it,t.clo/J\ 7°13-ti-A-optk

IlgROVAFP0)CMI, *%4Act CA pi ot=4--kr,

V=hcca

5.

ligAJ

M4: 9 -AON1.0&;?.artiictst, NA NitEft%

c U;3:11,1N-M- -1--fts .EIL4P1W1-0)

MAGDIrtriiiiiV4Itzo

(1)artbsIlORm-4.4 L ob)- -MD,,iAft

Pat

izUtiN5PR--e, W&TUit61-PIEMP-DIA0 1/2 1i5

-( 359 ) Q=114 -

4-.o- -0 .7

- v

o-

-4

0 IC e ('Pm=1 Cf) a___o__

--)

---

v

7- ---Q- -Fr

_v

_{Ke ( (Pm= 50)} I

- ..---

__.-

-8---

---

0

---

---,.

--_-

--0.-0

___--0-o0 0

0 0 Kcx Ko

_Q.1/4

02

0.3 Fn

02

03

Fn 0.3 se 0.2 8 se 0.1 0

-.

0.02 0.2 01 0.257 , (2)1 It'Z-7:2 --.)1/0±ALRUlf, *F4 < ts

eafial:g6 VAT

172 < tS ( 3 )

_{-)1,00-1-xeLzkolopito-ru,}

mAztn-cuiaa-ikt,t,:eviA77_Ztd, gibia

ik"cillN)f.cot t Z.

( 4 ) 13 ilitEIIITUSSORrAickf-rZ)M1.1.1.U4 SiC.!;,Nr.C141° ( 5 ) 7 ' UALtIC ZVEb4EVC.!-Pts <.

Fig. 21 N-coefficients to speed

Fn = 0.300 0.329 0.200 0.150 0.100 0.000 0.057 10: 1 51 Pm ,(i(Pnt+ICon.11) I 2_, '0deg)!

Fig. 20 Effective damping coefficient curves to mean rorl angle

iMcklt

(6)

rh-JR-g66rilliaapitonARKomm, ,Np-5mo3 AbAbZ'Afilorph&Ao. < 7 ) at Jr.xllioDZiWt

OJNOltoF6-11itIA--co

ODTs, 1 /111%i)1,R < 714295M d;'s 1-1-Xect tZAIRIapb& ( 8 ) AfIg-±"TNAU 7

ow-Vgagict

o

zsAiaLm.xe.L0.t.trceit,

aicjz,IRfrop,

-0

N445 ., Nzo t Est irnated)

I .. li., , Ill :...vez,_.. I I --' - 2-. 0.06 0 0 0.04 0.1 0.2 0,3 *RI 0 0 (360) 0 5

(9.) MA- VALtopitimau-MCgr.AMA

WrOZ)01MCTZ0-)1/,4:

l.,--COVAIS.-01AN

Agt/1,A-'

0

MI6 &tea ct A rhl

L-nct_E-natEc.

ot<IA-Ct6 , 1/10-C.

-

U't

ff, 6-61i'

< ,753 illiMM-eGt;E

tVC..t ZhMIT-1.1113IV 1 g J?Lhit

taut.

VSMAI'R)AgEg-F,4/8EA/C>11.-CittMaK iii'J f*L -bsAiti.EFWY)!Pts.

ihii

fai43T, MthiTecitf-ciDEV)Kg 3 ft, fs Z. NRW1q.i.E.1i0. 01f1 t-"Cf A

Cit43tt

bg.). 034 a, N209 0.020 Z0 -7,tC.11..t < tsZ *UMWDAVAUF)tigirlif-WL.

t.

75g/ N,

"47

-ODZINYttirAtZ?VM 43L U-c,

H 0--APJUM=r,L

zo tiaM 6 AN5f5E15193 311U-cZy,1-4tc !Mt L--2M3-1-apiEfAV5V4i1,-c-F tz,

8*.6'{47

i;N5NAli-atcm- < tZtAzIckireODZAEC;WtiEtlirg930)blitV41, 0)14.V It .t$19fff:A-it grgiaF AC 0 M270-20 t-tt')T11_, 'to

t A SC *

1)

15 142 t

-7 a-

44--'g." (1971)

a) EfiAl]i3 "Rit'ETLIM.7

-

likKa

-

- (-7:- 1 - 5 ), *MRY4-4.71,

t0,502, 504, 505, 510-', 1971, 511-"a, (1972)

: ztuqueziLpop&Alil

csVER03" NA153.1fra,A-i=

9132-%-', (1966)

11141git, "Short Crested Wave

Sway, Yaw 16tO Roll opiEMIC-DI.0-C" NI$

mer,1 v42-Fuk , (1971)

ggzjifg, "x I- 9, _ktc.t:ZNSII

RitioDVDtaaR7tXr.i'v , PANZIrlaf

5-tiRA16 Mr 7A% 4 (7° ,Aqi% IS 1.

%), (1970) 6 ) "A 77cittC.t aLtIVDMOD:MbiltAl:7°,0 , fr,14145Miff 9Y0

(7°0 Y.,J44A %

A), (1971) ) YJ\)IUjL

z Lazatt4i&NIZAM(-

),

(Q2)'

%525, (1973)

8)

M1315,..=.g "-AA

t

Mogibtivtqc

z Nitgflft", BENZVIiIMA

%144-'g-, (1972) 91) AZ45(5.,

'57 i1

-"C", INNI4A9tYZA-2

H-152, (1974)

LipmmulamimilOntliiiiimmirw:ImMWWItifsiM-01111,1141ffifffillic WiVympA

(361)

6.

(*),

"

-.

: .9-2 526'6',