대한조선학회 웹진 2015년 1월호.pdf

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DRAKE, S. (1989), Two new sciences, English translation, 2nd Ed. Wall & Emerson, Inc., Toronto

, (2014), , GS, VALLERIANI, M. (2010), Galileo Engineer, Springer: New YorkWINTER, T. N. (2007), The Mechanical Problems in the Corpus of Aristotle,

University of Nebraska-Lincoln, Faculty Publications, Classics and Religious Studies Department, Paper 68

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Birth of Science and Naval Architecture; through Galileos Two

New Sciences

Seung-Joon Lee (Chungnam National University)

[currerntly at Kyushu University, Fukuoka/Japan in Academic leave]

It is well known that the birth of modern science was much benefitted from

the Newtons Principia, and also that he was indebted to various works of

Galileo, especially to Two new sciences, however, it is less known or almost

unknown that the motivation of the Galileos work has to do with his job as a

consultant to the Arsenale of Venezia, while he was a professor at the

University of Padua for 18 years (For timeline see Table 1).

After building the new Arsenale in the early fourteenth century, Venezia was

still the strongest naval power in the Mediterranean Sea at Galileos time,

although the arena of the global trade was being gradually moved to the

Atlantic Ocean. It is interesting to note that the word Arsenale was borrowed

from Arabic dar as-sinaah, meaning house of manufacture, in the early twelfth

century. When Galileo was 7 years old, Venezia played the decisive leading role

for the Catholic victory in the famous naval Battle of Lepanto, which resulted in

the legend of the Invincible Armada of Spain. The University of Padua was then

under the auspices of Venezia, and was famous for her openness and academic

freedom. The Arsenale was the national maritime research center as well as the

navy and commercial shipyard of Venezia, to which Galileo became a consultant

in 1593, and he was asked to solve problems faced by the engineers there then

[Valleriani (2010)].

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When Who Whatc. BC220 Archimedes Principle of lever

1320 Republic of Venezia Arsenale Nuovo1492 Columbus Navigate to West Indies1564 Galileo Born

1571 Catholic vs. Islamic powers Battle of Lepanto

1592-1610 Galileo Professor, University of Padua1633 Galileo Inquisition, House arrest1638 Galileo Two New Sciences1642 Galileo[Newton] Died[Born]

1686 Mariotte Deflection of cantilever; Strength of materials

1687 NewtonPrincipia; Dynamics

Mathematical Principles of Natural Philosophy

1738 Bernoulli, Daniel Hydrodynamica1856 Saint-Venant Pure bending of beams

1902[1906] Kutta[Joukowski] Mechanism of lift1903 Wright brothers First heavier-than-air flight

1904 Prandtl Boundary layer theory; Fluid dynamics

1914 Buckingham Pi-theorem

Table 1. Timeline

Among those problems, the following three became his lifetime questions,

namely;

How long can a wooden ship be?What is the trajectory of the cannon ball?How big is the propulsion produced by an oar?

All of these, each of which will be considered in turn below, were closely connected to the situation around the turn of the century into the seventeenth.

While Venezians always wanted bigger and thus longer ships to get ahead in

the increasingly severe competition against the Atlantic trading countries,

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namely, Portugal, Spain, Holland, and England, it was found that, even if the

size of cross-section of a ship is increased in proportion, longer ships were

broken eventually in the middle during the construction due to their own

weight. In modern terminology, they were experiencing that the geometrical

similitude was not sufficient to guarantee the mechanical similitude. Galileo

pointed out this rightly and accurately, and, to derive the relation between the

resistance to fracture and the ships length and her weight, replaced the ship by

a cantilever. The resistance to fracture (of a fiber) could be obtained from the

experiments as shown in Fig. 1, and the breaking of a ship due to its own

weight was idealized as the breaking of a weightless cantilever under loading at

its free end, as shown in Fig. 2. It is noted that both of these figures are taken

from his book, Two new sciences.

Fig. 1 Resistance to fracture Fig. 2 Cantilever replacing ship

Applying the principle of lever, expounded by Archimedes earlier, Galileo could

give an answer in the following form [Drake (1989)]. ;

Prisms and cylinders differing in length and thickness have their resistances to fracture in the ratio compounded from the ratio of the cubes of the diameters of their bases and from the inverse ratio of their lengths.

This is his Proposition V in the Second day, and we note that in his time the

concept of function was not known yet, and that Two new sciences consist of

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talks among three scholars in four days, and the first two days are for the first

question and the last two days for the second. It is true that his formulation of

and the solution to the problem had many faults, however, his contribution

originated from the treatment of the first question is at least threefold.

Application of mathematics and the known physical principles to the solution of

practical problems was exemplarily shown, the quest for the dimensional analysis

including model tests were first rightfully raised, and finally his simplified model

for a ship by a cantilever showed the way how a body in its essence should be

treated for scientific and engineering thinking. His treatment was the primary

basis for applied mathematics, dimensional analysis, and the statics in general

and the strength of materials in particular in the coming centuries. Newton

created calculus to define velocity and acceleration, Mariotte and Saint-Venant

cultivated the field of strength of materials by correcting the result of Galileo,

and Buckingham established pi-theorem for justifying dimensional analysis.

The second question had its roots in the widening use of guns in battle fields. The Arsenale was responsible for manufacturing not only navy and commercial ships but also all the fittings and weaponry shipborne as well as on ground including guns, and hence the English word arsenal. Guns in the west were introduced through the Mongol invasion in the thirteenth century, and later the Arsenale was behind the first field usage of the lighter-weight artillery on mobile carriages.

To visualize the trajectory of cannon balls, in other words projectiles, Galileo again built a very creative field of study, namely the vector kinematics. We note that the concept of vector and the co-ordinate system were not known yet, and that mathematics then meant geometry. Pointing out the discrepancy between the result given by Aristotles teaching and that of his own experiments for free fall, he introduced the concept of uniform and the uniformly accelerated motions of a body. He defined the latter motion as

We shall call that motion equably or uniformly accelerated which, abandoning rest, adds on to itself equal momenta of swiftness in equal times.

This is his first definition in the Third day discussing the naturally accelerated

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motion. Without proper mathematics dealing with instantaneous changes, i.e. differential and integral calculi, he restricted himself to these two types of motion only and managed to prove that the trajectory is a parabola. First, decomposing the motion into two independent motions, namely the horizontal and the vertical, and he showed that the former is uniform and the latter uniformly accelerated, and finally combining these two results he could give the following theorem,

When a projectile is carried in motion compounded from equable horizontal and from naturally accelerated downward motions, it describes a semiparabolic line in its movement.

This is the first Theorem in the Fourth day dealing with the motion of projectiles, and we note that he used the word naturally accelerated downward motion for free falling. Newtons first law of motion is in fact Galileos finding, however, Newton regarded it as a law, while Galileo took it as a reasonable conjecture. In any case Newtons calculus and vector dynamics were constructed on the shoulder of Galileos kinematics, and since they together formed the basis of other physical sciences developed later, Galileo is often naturally called the father of modern science.

As to the third question on propulsion by an oar, as the title of his book, Two new sciences(not Three), suggests, Galileo could not get far in explaining the cause of propulsion in water. Since Aristotle asked a question related to oar in his Mechanical Problems [Winter(2007)], which is now regarded as writing by Archytas of Tarentum, a contemporary of Plato who was even before Aristotle, it was a long standing problem, for which the reasonable answer including the mechanism of drag and lift was available only in the early twentieth century, after even the first heavier-than-air flight by Wright brothers.

In order to answer to this, the role of viscosity of fluid around a body had to be understood, and this was made clear only after the work of Kutta, Prandtl, and Joukowski. Early efforts by Bernoulli and Euler in eighteenth century and by Cauchy and Stokes in nineteenth all failed to offer a consistent and plausible description of the phenomena.

Although Galileo was not successful in answering the third question, his

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lifelong endeavor along this line is well described in Two new sciences, as evidenced by the treatment of various subjects in the First day alone such as void(rather than vacuum), motion of a body in media, weight of air, buoyancy, surface tension, viscosity, resistance of medium, terminal speed, and sensation of sound. In fact so diverse are his subjects on fluid, most readers of Two new sciences get astray in the First day. Seemingly unrelated talks to the main theme, the problem of strength of materials, were in reality his precious gift to the future generation trying to answer the third question, I suppose.

If we agree to the commonly accepted idea that the fluid dynamics(not hydrodynamics) as a well established field of study began only after the Prandtls boundary layer theory, no wonder Galileo was not able to do much in his time, and we emphasize that it took many generations of great mind for grasping the phenomena of propulsion by lifting surfaces. After all, according to Aristotle, air and water, two most important media for the human being, were two of the four basic elements comprising the world around us. Now both of them are treated in a unified fashion within the framework of fluid dynamics, and for that we owe much to the initiation of Galileo in building up a whole new science.

Some of the basic questions asked in science are not related to engineering, for instance the origin of life, universe, and matter, however, many are stemmed from engineering practice. The fact that naval architecture as a field of engineering supplied such important questions to Galileo is described above, and it is very much hoped that this trend continues in the present and future.

Acknowledgements

It is gratefully acknowledged that the permission of the Academic leave for a year from the home base, the Chungnam National University, was given to the writer. This was first presented on the Workshop at Hiroshima University in November, 2014 as an Invited Lecture.

References

DRAKE, S. (1989), Two new sciences, English translation, 2nd Ed. Wall &

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Emerson, Inc., TorontoVALLERIANI, M. (2010), Galileo Engineer, Springer: New YorkWINTER, T. N. (2007), The Mechanical Problems in the Corpus of Aristotle,

University of Nebraska-Lincoln, Faculty Publications, Classics and Religious Studies Department, Paper 68

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6 PAAMES/AMEC

(), ()

PAAMES(The 6th Pan Asian Association of Maritime Engineering Societies) AMEC(Advanced Maritime Engineering Conference) 2014 10 28 30 . PAAMES . AMEC New S-Tech Conference , 4 1 PAAMES AMEC PAAMES , . 2004 1 PAAMES , . ( 1 )

1. PAAMES/AMEC

1 , 2004. 10. 26~292 , 2006. 10. 18~203 , 2008. 10. 20~224 2010. 12. 6~85 , 2012. 10. 10~126 , 2014. 10. 28~30

PAAMES . PAAMES . Shanghai Society of Naval Architects and Ocean Engineers (SSNAOE) The Chinese Society of Naval Architects and Marine Engineers (CSNAME) Fujian Society of Naval Architects and Marine Engineers (FSNAME)

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The Hong Kong Institution of Engineers-Mechanical, Marine, Naval Architecture and Chemical Division (HKIE-MMNC)

The Hong Kong Institute of Marine Technology (HKIMT) The Japan Society of Naval Architects and Ocean Engineers (JASNAOE) The Japan Institute of Marine Engineering (JIME) Japan Institute of Navigation (JIN) Jiangsu Society of Naval Architects and Marine Engineers (JSNAME) Korea Society of Marine Engineering (KOSME) The Korea Society of Ocean Engineers (KSOE) North East Asia Division/South East Asia Division of the Institute of

Marine Engineering, Science and Technology (NEAD/SEAD of IMarEST) Russian Scientific and Technical Society of Shipbuilders (NTOS) The Society of Naval Architects of Korea (SNAK) Society of Naval Architects and Marine Engineers Singapore (SNAMES) The Society of Shipbuilding Engineering of Heilongjiang Province (SSEHP) Taiwan Society of Naval Architects and Marine Engineers (TSNAME)

SSNAOE , Zhang Shengkun LOC . International Organizing Committee (IOC) International Program Committee (IPC) , , , , . 6 .

100 , 79 , 40, 20, 9, 10 . 10 28 IOC IPC (ISC) PAAMES Forum . PAAMES Forum 6 , EEDI . AMEC . 4 , 150 . , , 30 . ( 2 )

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2. PAAMES/AMEC

October 28, 2014

08:30-14:00 Registration

10:00-12:00 The 3rd International Standing (ISC) Meeting

12:00-13:30 ISC Lunch

13:30-14:00The 6th PAAMES/AMEC 2014 Opening Ceremony- Opening Address- Welcome Speech

14:00-15:30

PAAMES ForumTheme: Development of Pan Asian Maritime Industry-Cooperation, Progress and Innovation- Bring Social Functions of Learned Society into Play through Technological Innovation Advances by Prof. Zhang Shengkun, President of Shanghai Society of Naval Architects and Ocean Engineers- Development of Intelligent Design and R&D Tools in Marine I ndustry by Prof. Hiroyuki Yamato, President of The Japan Society of Naval Architects and Ocean Engineers- Prediction of Ship Performance in Waves for EEDI by Prof. Yonghwan Kim, Director of International Affairs of The Society of Naval Architects of Korea

15:30-15:45 Coffee Break

15:45-17:15

- The Application of Endplate Propellers on High Speed Crafts at Inclined Shaft Conditions by Prof. Young-Zehr Kehr, President of Ship and Ocean Industries R&D Center (SOIC)- The Role of a Professional Society in Promoting Cooperation, Progress and Innovation in the Maritime Industry by Trevor Blakeley, Chief Executive of The Royal Institution of Naval Architects- The Past, Present and Future Perspective of PAAMES on Maritime Innovation by Ir Kasing Szeto, President of North East Asia Division of The Institute of Marine Engineering, Science and Technology

17:30-18:00 Photo Session

18:00-20:00 Welcome Reception

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October 29, 2014

Session A Room 1 Room 2 Room 3 Room 4

09:00-10:20

A 1Ship Research, Development

and TechnologyShip Design and

Hull Form Optimization (1)(4 presentations)

A 2Green

Technology Development in Maritime and

Ocean EngineeringEne

rgy Saving Device

(4 presentations)

A 3New Technology

of Maritime Industry, Including Shipboard

Machinery (1)(4 presentations)

A 4Green Technology Development in

Maritime and Ocean

EngineeringStrength and

Vibration for Ships and Ocean

Structures (1)(4 presentations)


10:40-12:00

A 1Ship Research, Development



A 2Green

Technology Development in Maritime and

Ocean EngineeringEne

rgy Saving Device

(4 presentations)

A 3New Technology



A 4Green Technology Development in

Maritime and Ocean

EngineeringStrength and

Vibration for Ships and Ocean

Structures (1)(4 presentations)

12:15-13:15 LunchSession B Room 1 Room 2 Room 3 Room 4

13:30-15:10

B 1Renewable and Ocean Energy

(5 presentations)

B 2Ship Navigation, Operation and

Added Resistance of

Ships in Waves Management

(5 presentations)

B 3New Technology



B 4Ship Research,

Development and TechnologyFundamental

Research(5 presentations)


15:30-17:10

B 1Renewable and Ocean Energy

(5 presentations)

B 2Ship Navigation, Operation and

Added Resistance of

Ships in Waves Management

(5 presentations)

B 3New Technology



B 4Ship Research,

Development and TechnologyFundamental

Research(5 presentations)

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Session C Room 1 Room 2 Room 3 Room 4

09:00-10:20

C 1Ship Research, Development



C 2Offshore Oil

and Gas Production Facilities

(4 presentations)

C 3Safety and

Environment Protection at

Sea and Development of

Regulation(4 presentations)

C 4Green Technology Development in

Maritime and Ocean

EngineeringStrength and Vibration

for Ships and Ocean Structures

(2)(4 presentations)


10:40-12:00

C 1Ship Research, Development



C 2Offshore Oil

and Gas Production Facilities

(4 presentations)

C 3Safety and

Environment Protection at

Sea and Development of

Regulation(4 presentations)

C 4Green Technology Development in

Maritime and Ocean

EngineeringStrength and Vibration

for Ships and Ocean Structures

(2)(3 presentations)

12:15-13:15 Lunch13:30-15:30 IPC Meeting15:30-17:30 ISC Meeting18:00-20:00 Banquet and Best Paper Award Ceremony

October 30, 2014

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Paper Number Authors Title

GT-ES-03(Japan)

Munehiko MinouraKeita Inoue

Hisafumi YoshidaHisao Tanaka

Study on Recovery of Ship Motion Energy by Utilizing Linear Generator

GT-SV-07(Korea)

Jung-Hyun KimYonghwan KimJi-Hee Hwang

Byoung-Hoon Jung

Numerical and Experimental Assessments of Fatigue Damage due to Springing and

Whipping on an Ultra Large Containership

GT-ES-08(Taiwan)

Jen-Shiang KouhYi-Kai Chen

Tsung-Yueh Lin

Parametric Design and Simulation of Asymmetric Stern for Containerships

GT-ES-02(China)

DU Yun-longCHEN Xia-ping

CHEN Chang-yun

Numerical Study of Working Principle of a Flow Straightening Duct on a Bulk Carrier

AMEC . 1 IPC 30 .

3. AMEC 2014 Best Paper Award

(7) PAAMES/AMEC . 3 . 8 1 , 9 . , , 7 8 . (2016 2018 )

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1. 6 PAAMES/AMEC

2. PAAMES Forum

3. (ISC)

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.BP Shipping 2018

174,000cbm LNG 6 . 3 18 . BP LNG 20 440 . BP 138,000cbm LNG .

LNG LNG . ME-GI FGSS(), PRS() .

(Chevron)

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56

(George Kirkland) . .

. .

1995 20 . 1995 123 13 . , .

() , . , .

DSME .

,

.

- 100 21 - 5,200

2015 1

57

, .

22 , 100 21 .

.

DSME ( ) . 20 , , .

.

9,000 1 . DSME ' .

22 ( )

.

SNAK Zine

58

2014

- 2014 LNG 37 149 ( 145) - 30, ME-GI LNG 4

4 , 2014 .2014 LNG 37 , LNG

30 . (Angelicoussis Group)

173,400 LNG 4 30 .29 (John

Angelicoussis) . 1994 .

, 73 . 17 (DMHI) .

(Maran Gas Maritime Inc) 294.9m, 46.4m , 2017 .

ME-GI(Gas ) LNG( ME-GI LNG) . ME-GI LNG , 2 .

ME-GI LNG . (Partial Re-liquefaction System) , LNG DFDE(Dual Fuel Diesel Electric) 20% .

149 . 145 , 12 30%( 46 ) .

149 , . 2007 215 . , , .

, . 49(LNG 37 + LPG 12) , 100

2015 1

59

. ME-GI LNG, LNG (

) . 66 LNG( 155,000 , ) 37 , (48) 80% .

, . , .

R&D ' ' , " , " .

2014 ,

LNGC 37

Tanker 10VLGC 12CONT 6 3

68 / 122 1 / 27

(/) 69 / 149

29 ( ), ( ) LNG .

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60

4 ( 19) .

. .

18 3 .

! . .

. 2 8 .

4 .

. , , , , , , , .

.

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LNG 5

30 LNG 5 1 7,456 .

2019 1 LNG LNG 15 5. , 2014 15 .

2015 1

61

3 LNG 15 , 3 . 145 149 .

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62

LNG

LNG .

9 (MOU) . .

MOU LNG .

LNG , LNG- R&B . .

LNG LNG .

()

.

2015 1

63

.

, LNG () , .

, 100% .

4 (Knutsen) 176,000cbm LNG 2 .

, 6() .

1955 , 1981 30 .

12, , .

-

- - - , - ,

.

.

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64

2002 , , EPC , , , , , .

, , PM . , , .

31% , 3 , , , .

2015 1

65

1 2015 . .

, .

. .

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12 . , , , . .

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66

'' . . . , .

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. '' . () , . " " .

10 . 9 3 9 2 .

.

, 14 R&D .

" , , .

2.5 1 1.25 14 .

Seajacks 1 , 9 .

, .

2.5 50% 1.25 , .

2015 1

67

, , .

(European Wind Energy Association) , 2003 532MW () 6,562MW 10 10 , .

, , .

, , , .

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4,175 2 23 .

2 1 4,175 . 7 2 .

(LPX, Landing Platform eXperimental) . , , .

.

. .

2002 , 2007 . 199, 31, 6.6 23 700 .

, 2 100% .

50

(HHIC-Phil Inc.) 50

2015 1

69

. 2009

300ha . 17 5 50 .

550m, 135m 4km 10 60 .

2007 1 10 , 68 , 7 .

, 2006 2 4,300teu 4 8 100 .

4 , 4 10 .

SBMA() , 5 9 11 2 SBMA . 42 .

, 6 38,000 LPG , 11,000teu 10,000teu .

.

1937 , LNG, , , () , . 2009 VLCC .

30 10,000teu 39, 26 3 ,

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70

. , 26,000

.

, (SDC; Skill Development Center) , . 42,000 , 30% 60% .

(Roberto V. Garcia) SBMA , SBMA .

, " , , .

2015 1

71

2

9 , Nordic American Tankers(NAT) 158,000dwt 2 . NAT 6,500 . 2016 3 2017 1 .

NAT . NAT 22 , 5 3 . 10 1990 .

40 . 5 . 2010 , . Wilbur Ross, Idan Ofer, CM Lemos 40 .

(Extension synchro welding system) 12 .

. . .

30~50m 100m , . , , .

1 8 9 200 , .

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1 , .

() .

2

(Nordic American Tankers) 158,000dwt 2 1,500 23 .

G(Green Ultra long stroke) 10% . , (EEDI) (Eco-ship).

10% .

NAT 90% , .

18, 2, 22 42 22 6,000 19 .

2015 1

73

.

19 . .

23 1,000 . . .

2010 .

, .

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18

18 . 5 2014

, 2913 2812( 96.5%) 1658 ( 59%) .

1997 18 .

3 38 37 ( ), 100%()+300 , 20 , 700% . , .

.

, 2014 .

(Reefer Container Carrier) 16 .

4085 7 (Dole Food Company, Inc.) 770feu 3 .

190.0m, 30.4m, 17m (Water

2015 1

75

Cooling System) . ,

2, (Thruster) 1 . PC

(Platform Supply Vessel), (Combo Vessel), (Juice Carrier) .

SNAK Zine

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3

3 . .

8 2014 (3,000~8,000 TEU) , 3 .

24.3% 27.3% 1, 7.4% 4 .

5 500 5 5% .

2007 8,000TEU 80,000DWT 5 .

50 4 , , .

12() 57.6%(1,253) . 2,514 86.3% 2,172 .

11 37,000 ( ) 100%+ 300 20 2015 60 .

1 .

2015 1

77

.

2014 .

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STX

LR 1 , LNG

STX (Pleiades Shipping Agents S.A) 73,500dwt LR1 6( 4 ) 5 .

10 RG . 2017 . , 75,000dwt 4,650 .

STX 2 . 2 8 Navig8 LR1 12( 4 ) MR 8( 4 ) .

. (Royal Dutch Shell) 6,500cbm LNG 1 . , 7 LNG 5,000 .

Shell LNG LNG LNG . ECA 1 0.1% . Shell LNG , .

LNG LNG LNG .

2011 LNG STX (AIP, Approval In Principle) LNG .

STX LNG (Re-liquefaction Plant) LNG . LNG LNG LNG (LNG Transfer Arm) .

STX STX LNG

2015 1

79

LR1 MR LR1 .

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KAIST,

KAIST 2 . KAIST , 1020~26 Marina Bay 1 MIT .

, (ONR, Official of Naval Research) 2 .

, , , , 5 3 15 MIT, , , , , . KAIST .

4.5m, 2.5m , , 5 .

KAIST 15 6 2 3 MIT MIT .

KAIST 2 Northrop Grumman 16,500 .

, , , , .

, , , , .

2015 1

81

, 6

(KOMERI) 15 2014 2 (53) 6 .

KOMERI , . 1 .

(35), , , 2004 KOMERI 10 .

KOMERI , , () .

KOMERI .

,

17 (DSEC) .

3 LNG FGSS( ) 2011 5 MAN D&T ME-GI LNG . 2012 12 LNG , . .

() 5 2014 4 . (86 ) (66 ) (62) (58 ) (45) .

1812, . 100 1912 . 100 2012, LNG ME-GI

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. 1981 31 . 2006 5

, 2010 , . Universal Primer, VLCC, Standard LNG FPSO( 200) , POSCO MOU . 2012 4 LNG Power Plant(FLPP) , .

,

12 29 1,000teu 31 .

(M/V HEUNG-A HAIPHONG) 7 . 10 (HEUNG-A JANICE) . 6 .

29 BIH(------) 31 .

141m, 24.80m 20 1 18 . .

2015 1

83

7 1, January 2015

1 Stability criterion and its calculation for sail-assisted shipYihuai Hu, Juanjuan Tang, Shuye Xue and Shewen Liu

10 Incorporating mesh-insensitive structural stress into the fatigue assessment procedure of common structural rules for bulk carriersSeong-Min Kim and Myung-Hyun Kim

25 A numerical parametric study on hydrofoil interaction in tandem Omer Kemal Kinaci

41 A new mount with moving-magnet type electromagnetic actuator for naval shipboard equipmentYun-Ho Shin, Seok-Jun Moon, Jeong-Il Kwon, Woo-Jin Jung and Jae-Jin Jeon

56 Investigation on hydrodynamic performance of a marine propeller in oblique flow by RANS computationsJianxi Yao

70 Inner harbour wave agitation using boussinesq wave modelJitendra K. Panigrahi, C.P. Padhy and A.S.N. Murty

87 Path planning on satellite images for unmanned surface vehiclesJoe-Ming Yang, Chien-Ming Tseng and P.S. Tseng

100 Hull-form optimization of KSUEZMAX to enhance resistance performance Jong-Heon Park, Jung-Eun Choi and Ho-Hwan Chun

115 Simplified formulas of heave added mass coefficients at high frequency for various two-dimensional bodies in a finite water depth Weoncheol Koo and Jun-Dong Kim

128 A simple iterative independent component analysis algorithm for vibration source signal identification of complex structures Dong-Sup Lee, Dae-Seung Cho, Kookhyun Kim, Jae-Jin Jeon, Woo-Jin Jung, Myeng-Hwan Kang and Jae-Ho Kim

142 A new method for ship inner shell optimization based on parametric technique

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Yan-Yun Yu, Yan Lin, Ming Chen and Kai Li157 Welding deformation analysis based on improved equivalent strain method

considering the effect of temperature gradients Tae-Jun Kim, Beom-Seon Jang and Sung-Wook Kang

174 Energy flow analysis of out-of-plane vibration in coplanar coupled finite Mindlin plates Young-Ho Park

195 A study on the effect of flat plate friction resistance on speed performance prediction of full scale Dong-Woo Park

212 Application of tidal energy for purification in fresh water lake Rho-Taek Jung and Hiroshi Isshik

2015 1

85

The 30th International

Symposium on OKHOTSK Sea & Sea

Ice

2015. 02. 15~19

Mombetsu, OKHOTSK,

Japan

http://www.o-tower.co.jp/okhsympo/

POAC 15(Port and Ocean

Engineering under Arctic Conditions)

2015. 04. 14~18

Trondheim, Norway

http://www.ntnu.edu/poac15

OTC 20152015. 05.

04~07Houston,

Texas, USA http://2015.otcnet.org

/

OCEANS '15 MTS/IEEE Genova

2015.05.18~21

Genova, Italyhttp://www.oceans15mtsieeegenova.org/in

dex.cfmOMAE 2015

(International Conference on Ocean, Offshore and Arctic

Engineering)

2015. 05. 31~06. 05

St. Johns NL, Canada

http://www.asmeconferences.org/omae201

5/

The International Society of Offshore and Polar Engineers

(ISOPE-2015)

2015. 06. 21~26

Hawaii, U.S.A http://www.isope.org/

WMTC 15(World Maritime

Technology Conference)

2015. 11. 03~07

Rhode Island, USA

http://www.sname.org/2015wmtc/home/

, ! - ; Birth of Science and NavalArchitecture; through Galileos TwoNew Sciences

6 PAAMES/AMEC

STX

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