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The Naval Architect

International Journal of the Royal Institution of Naval A r c h i t e c t s

Editor:

IWichael Wal<e, BSc, C . E n g , M R I N A

Editorial A s s i s t a n t :

Gillian C a r t w r i g h t , BA

S a l e s Director: Henry R. Jacl<son S a l e s Manager; Richard K i r k b y Subscriptions and Publications:

Lesley S m i t h e r s

Editorial and A d v e r t i s e m e n t Office:

1 0 Upper Belgrave S t r e e t , L o n d o n S W 1 X SBQ. T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : S i n a i , L o n d o n . T e l e x : 2 6 5 8 4 4 S I N A I G T e n issues published per y e a r : J a n u a r y , February, M a r c h , A p r i l , M a y , J u n e , J u l y , S e p t e m b e r , O c t o b e r and N o v e m b e r

Printed by U n w i n Brothers L i m i t e d , O l d W o k i n g , Surrey

The Institution is not as a body, responsible for opinions expressed in The Naval Architect unless it is expressly stated that these are the Council's v i e w s .

© 1985: The Royal Institution of Naval Architects. This publication is copyright under the Berne Convention and tha International Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted w i t h o u t the prior permission of the copyright owners. Permission is not, however, required t o copy abstracts of papers or of articles on condition that e full reference t o the source is s h o w n . Multipie copying of tlie coritetits w/t/iDut permission is always Illegal.

A D V E R T I S E M E N T R E P R E S E N T A T I V E S :

Franca:

E. Costemend. Agence Gustav Elm. 4 1 Avenue Montaigne. 7 5 0 0 8 Paris, France. Tel: 7 2 0 - 2 5 . 3 0 . 7 2 3 - 3 2 - 6 7 / 9 6 - 8 6 . Telex: 2 9 0 2 6 0 QUSTELI^ F. Germany. Austria and Switzerland: T . Anthony, A m Turnierplatz 8, 2 1 1 2 Jesteburg b. Hamburg, Germany. Tel: 1041831 5 5 4 1 .

Italy:

Vittorio F. Negrone, Ediconsult Internationale. PiozzB Fontane l^arose 3. 16123 Genoa. Itely. Tel: 5 4 3 . 6 5 9 : 2 6 8 . 3 3 4 : 2 6 8 . 5 1 3 . Telex: 2 1 1 1 9 7 .

Scandlnayla;

AB Stephan R. G. Örn. PO Box 1 8 4 . S - 2 7 1 0 0 Ystad, Sweden.

Tel: 4 6 - 4 1 1 - 1 8 4 0 0 . Telex: 3 3 3 3 6 ORNS.

Naval Architect

Walrus launched by RDM, page E13.

Garibaldi—/le/icopferi and Harriers, page

E14.

CONTENTS JANUARY

W a / f u s - R D M launch t h e latest

Dutch submarine E l 3

Gan'faa/d/—Italy's latest aircraft

carrier E 1 4

Propulsion round-up, a Europort

review E l 7

Ring main hydraulics—a proposal

from Hagglunds E21

Cargo handling equipment

review E 2 3

The economics of cargo

handling by computer

analysis E 2 8

Force measurement by

Paravane—a proposal from

Robert Matthews E 3 2

Regular Features

Commentary E 3

News Review E 5

Naval News E9

Update E l l

Trade and Equipment News . . E30

Diary E 3 9

Viewpoint E40

Technical Papers

A B C

Audited circulation 1 9 8 4 January-December 8 , 0 2 4

The Influence of Diffraction on the

Stability Assessment of Ships by

D. A . Barrie

The Effect of Bow Shape on Deck

Wetness in Head Seas by

A. R. J . M. Lloyd, J . 0 . Salsich and

J . J . Zseieczky

ISSN 0 3 0 6 - 0 2 0 9

(2)

Naval Architect

The N a v a l A r c h i t e c t I n t e r n a t i o n a l J o u r n a l of t h e Royal I n s t i t u t i o n of N a v a l A r c h i t e c t s Editor: M i c h a e l W a k e , BSc, C.Eng, M R I N A A s s i s t a n t Editor: Carol F u l f o r d , B . A .

Sales Director: Henry R. J a c k s o n A d v e r t i s e m e n t M a n a g e r : Richard Kirkby S u b s c r i p t i o n s a n d P u b l i c a t i o n s : Lesley S m i t h e r s Editorial and A d v e r t i s e m e n t O f f i c e : 10 Upper Belgrave S t r e e t , London S W 1 X 8 B Q . T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : S i n a i , L o n d o n . T e l e x : 2 6 5 8 4 4 S I N A I G Ten issues p u b l i s h e d per year: J a n u a r y . February, M a r c h , A p r i l , M a y , J u n e , J u l y , S e p t e m b e r , O c t o b e r and N o v e m b e r

Printed by U n w i n Brothers L i m i t e d , Old W o k i n g , Surrey

The Institution is not as a body, responsible for opinions expressed in The Naval Architect unless it is expressly stated that these are the Council's views.

£ 1985: The Royal Institution of Naval Architects. This publication is copyright under the Berne Convention and the International Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted without the prior permission of the copyright owners. Permission is not, however, required to copy abstracts of papers or of articles on condition that a full reference t o the source is shown. Mu/f/p/e copying of the contents

without permission is always illegal.

A D V E R T I S E M E N T REPRESENTATIVES: France;

E. Costemend, Agence Gustav Elm, 41 Avenue Montaigne. 7 5 0 0 8 Paris, France. Tel: 7 2 0 - 2 5 - 3 0 , 7 2 3 - 3 2 - 6 7 / 9 6 - 8 5 , Telex: 2 9 0 2 6 0 GUSTELM F. Germany. Austria and Switzerland: T. Anthony, A m Lerchenberg 2 2 , D - 2 1 1 2 Jesteburg b. Hamburg, Germany. Tel: 104183) 6 5 4 1 .

Italy:

Vittorio F. Negrone, Ediconsult Internationale, Piazza Fontane Marose 3, 1 6 1 2 3 Genoa Italy. Tel: 5 4 3 . 6 6 9 ; 2 6 8 . 3 3 4 ; 2 6 8 . 5 1 3 . Telex: 2 1 1 1 9 7 .

Scandinavia:

AB Stephan R. G. Örn, PO Box 184, S-27100 Ystad, Sweden.

Tel: 4 6 - 4 1 1 . 1 8 4 0 0 . Telex: 3 3 3 3 5 ORNS. Audited circulation 1 9 8 4 January-December 8 , 0 2 4

ISSN 0 3 0 6 - 0 2 0 9

C O N T E N T S

F E B R U A R Y

A new applicalion for B&Ws economy

iitill design, page E55.

Kintampo — a high volumetric

efficiency r o r o f o r E u r o p e

-West Africa trades E53

A golden gamble —new

products tankers from B & W

shipyard E55

Doug Woodyard reviews the

large bore two-stroke diese!

engine market E59

The conversion of Deepsea

Pioneer by D. Tydeman and

R. Bryans . . E65

Neil Mitchell and E. A . Ramzan

of Brown and Root Offshore

look at offshore mooring

systems E71

r

»T .f '

• ,. '•

Deepsea Pioneer a successfid conversion for

Argyil 30/24, page E65.

Regular Features

Commentary E43

News Review E45

Update E48

Naval News E49

Letters t o the Editor E50

Trade and Equipment News . . E61

Diary E79

Viewpoint E80

T e c h n i c a l Papers

Merchant Vessel Conversions: The

Falklands Campaign by J . L.

Hannah

(3)

T h e Naval A r c h i t e c t I n t e r n a t i o n a l J o u r n a l of t h e Royal I n s t i t u t i o n o f Naval A r c h i t e c t s Editor: M i c h a e l W a k e , BSc, C.Eng, MRINA A s s i s t a n t Editor: , Carol F u l f o r d , B.A. Sales D i r e c t o r : Henry R. J a c k s o n A d v e r t i s e m e n t M a n a g e r ; Richard Kirkby S u b s c r i p t i o n s a n d Publications: Lesley S m i t h e r s Editorial and A d v e r t i s e m e n t O f f i c e : 1 0 Upper Belgrave Street, L o n d o n S W 1 X SBQ. T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : S i n a i , London. T e l e x : 2 6 5 8 4 4 SINAI G T e n issues published per year: J a n u a r y , February, M a r c h , A p r i l , M a y . J u n e , J u l y , S e p t e m b e r , O c t o b e r and N o v e m b e r Printed in England by

S t a p l e s Printers St Albans L i m i t e d a t The Priory Press

The Institution is not as a body, responsible for opinions expressed in The Naval Archilecl unless it is expressly stated that these are the Council's

views-1985: The Royal Institution of Naval Architects. This publication is copyright under the Berne Convention and the International Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted without the prior permission of the copyright owners. Permission is not, however, required to copy abstracts of papers or of articles on condition that a full reference to the source is s h o w n . Multiple copying of the contents

without permission is always illegal.

A D V E R T I S E M E N T REPRESENTATIVES; France:

E. Costemend, Agence Gustav Elm, 41 Avenue Montaigne, 7 5 0 0 8 Paris, France Tel: 7 2 0 - 2 5 , 3 0 , 7 2 3 - 3 2 - 6 7 / g 6 - 8 5 , Telex: 290 2 6 0 GUSTELM F. Germany, Austria and Switzerland: T, Anthony, Am Lerchenberg 22, D 2112 Jesteburg b, Hamburg, Germany Tel: (041831 5 5 4 1 ,

Italy:

Vittorio F, Negrone, Ediconsult Internationale Piazza Fontane Marose 3. 16123 Genoa Italy, Tel: 5 4 3 . 6 5 9 ; 2 6 8 . 3 3 4 ; 268,513 Telex: 2 1 1 1 9 7 .

Scandinavia:

AB Stephan R, G, Örn. PO Box 184 S-27100 Ystad, Sweden.

Tel: 46-41 1 18400. Telex: 33335 ORNS.

I A Vi ^ t\ ^ ^ ^ ' ^ ^ ^ ^'^'^ulation 1 9 8 4

H - T l J D || January-December 8 . 0 2 4

ISSN 0 3 0 6 - 0 2 0 9

Maval Architect

1

m

Moelven's newly developecJ Dorlus self

unloading system, page E90.

C Q M T E M T S MfkUCn

Cutting port times—a review of

self unloading systems E90

Heavy fuel offshore—Tage

Blomeg of Wartsila Diesel

proposes the use of low

grade fuel E 9 3

Pielstick's PC20, first of a n e w

generation of long-stroke

medium speed diesel

engines E 9 7

i V I . A . N . - B e W top the market in

1 9 8 5 - D o u g Woodyard looks

at the market shares last

year E 9 9

Mooring system design for

floating production by J . B.

Spelman-Marriott and

D. P. Peace E 1 0 5

Compliant marine vehicles by

M. H. Patel of University

College London E l 10

Benwalid, the latest cattle

carrier conversion from Jos

L. Meyer by J . H. C o x . . . . E 1 1 5

Pieisticks new long-strol<e PC20, page E97.

Regular Features

Commentary

News Review

Naval News

E89

Trade and Equipment N e w s . .E 1 1 3

Diarv

Viewpoint E l 2 4

T e c h n i c a l Paper

The Technical Investigation of the

Sinking of the Ro-Ro Ferry European

Gateway by J . R. Spouge

MARCH 1 9 8 6

(4)

M

)Maiwal

Architect

The Naval A r c h i t e c t I n t e r n a t i o n a l J o u r n a l o f the Royal I n s t i t u t i o n of IMaval A r c h i t e c t s Editor: Michael W a k e , BSc, C.Eng, M R I N A A s s i s t a n t Editor: Carol F u l f o r d , B.A.

Sales Director: Henry R. J a c k s o n A d v e r t i s e m e n t M a n a g e r : Richard Kirkby S u b s c r i p t i o n s a n d P u b l i c a t i o n s : Lesley S m i t h e r s Editorial and A d v e r t i s e m e n t O f f i c e : 10 Upper Belgrave S t r e e t , L o n d o n S W I X 8 B Q . T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : Sinai, L o n d o n . T e l e x : 2 6 5 8 4 4 SINAI G Ten issues published per year: J a n u a r y , February, M a r c h , A p r i l , M a y , J u n e , J u l y , S e p t e m b e r , O c t o b e r and N o v e m b e r Printed in England by S t a p l e s Printers St A l b a n s L i m i t e d at T h e Priory Press

The Institution is not as a body, responsible for opinions expressed in The Naval Architect unless it is expressly stated that these are the Council's views.

© 1985: The Royal Institution of Naval Architects. This publication is copyright under the Berne Convention and the Internatibnal Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transnnitted

Vtfithout the prior permission of the copyright

owners. Permission is not, however, required to copy abstracts of papers or of articles on condition that a full reference to the source is shown. Multiple copying of the contents

without permission is always illegal.

ADVERTISEIVIENT REPRESENTATIVES: France:

E. Costemend. Agence Gustav EInn, 4 1 Avenue Montaigne, 75008 Paris, France. Tel: 7 2 0 - 2 5 - 3 0 , 7 2 3 32-67/96-85. Telex: 2 9 0 2 6 0 GUSTELM F. Germany, Austria and Switzerland: T. Anthony, Am Lerchenberg 22, D 2 1 1 2 Jesteburg b. Hamburg, Germany. Tel- (04183) 5 5 4 1 .

Italy:

Vittorio F. Negrone. Ediconsult Internationale Piazza Fontane Maruse 3, 16123 Genoa, Italy. Tel: 5 4 3 . 6 5 9 ; 2 6 8 . 3 3 4 ; 2 6 8 . 5 1 3 . Telex: 211 197.

Scandinavia:

AB Stephan R. G Orn, PO Box 184, S-27100 Ystad. Sweden.

Tel: 4 6 41 1 18400. Telex: 3 3 3 3 5 ORNS,

\\ / /

/ /\ '

Perspective view of a ship entering Port

Kembia, Australia as seen on LP's MSMS.

Page E137.

CP. propellers with Grim-wheels, a lacl< of

comment. Page El40.

CO[\!TEIWTS A P R I L

Manoeuvring simulator

(MSMS) t o aid new LR

notation E l 37

Wake equalising ducts

developed by Prof.

Schneekluth E 1 4 7

75 year celebration for

Schaffran propellers E l 5 0

Jet-deflection vanes for

improved performance of

rotatable thrusters E l 5 1

Integrated joystick propulsion

control from Kamome E l 5 2

Increased orders for

Grim-wheel E l 5 3

Schottel t o market

anti-suction-tunnel for b o w

thrusters E l 5 3

Integrated electronics—a

review of the latest

electronic developments. . . E l 5 6

Regular Features

Commentary E 1 2 7

News Review,

E 1 2 9

Naval N e w s .

, E 1 3 3

Update E 1 3 5

Letters t o the Editor E l 4 0

Trade and Equipment N e w s . . E 1 5 4

Diary E 1 6 3

Viewpoint

E 1 6 4

T e c h n i c a l Paper

A B C i

Audited circulation 1 9 8 4 January-December 8 , 0 2 4

An Integrated Approach t o Ship

Synthesis by David A n d r e w s

ISSN 0 3 0 6 - 0 2 0 9

(5)

Naval Architect

The N a v a l A r c h i t e c t I n t e r n a t i o n a l J o u r n a l of the Royal I n s t i t u t i o n of N a v a l A r c h i t e c t s Editor: M i c h a e l W a k e , BSc, C.Eng, IVIRINA A s s i s t a n t Editor: Carol F u l f o r d , B.A.

Sales Director: Henry R. J a c k s o n A d v e r t i s e m e n t M a n a g e r : Richard Kirkby S u b s c r i p t i o n s a n d P u b l i c a t i o n s : Lesley S m i t h e r s Editorial and A d v e r t i s e m e n t O f f i c e : 10 Upper Belgrave S t r e e t , London S W I X 8 B Q . T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : S i n a i , L o n d o n . Telex: 2 6 5 8 4 4 SINAI G Ten issues published per year: J a n u a r y , February, M a r c h , A p r i l , M a y , J u n e , J u l y , S e p t e m b e r , O c t o b e r and N o v e m b e r Printed in England by S t a p l e s Printers S t A l b a n s Limited at T h e Priory Press

The institution is not ss a body, responsible (or opinions expressed in The Naval Architect unless il is expressly stated that these are the Council's views.

© 1 9 8 5 ; The Royal Institution of Naval Architects. This publication is copyright under the Berne Convention and the International Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted without the prior permission of the copyright owners. Permission is not, however, required to copy abstracts of papers or of articles on condition that a full reference t o the source is shown. Multiple copying of the contents

without permission is always illegal.

A D V E R T I S E M E N T REPRESENTATIVES: France:

E. Costemend, Agence Gustav Elm, 41 Avenue fVlontaigne, 75008 Paris, France. Tel: 7 2 0 - 2 5 - 3 0 , 7 2 3 - 3 2 - 6 7 / 9 6 - 8 5 . Telex: 2 9 0 2 6 0 GUSTELM F. Germany, Austria and Switzerland: T. Anthony. A m Lerchenberg 2 2 , D 2112 Jesteburg b. Hamburg, Germany. Tel: (041831 5 5 4 1 .

Italy:

Vittorio F. Negrone, Ediconsult Internationale, Piazza Fontane Maruse 3, 1 6 1 2 3 Genoa, Italy. Tel: 5 4 3 . 6 5 9 ; 2 6 8 , 3 3 4 ; 2 6 8 . 5 1 3 . Telex: 21 1 197.

Scandinavia:

AB Stephan R. G, Örn, PO Box 184, S-27100 Ystad, Sweden.

Tel: 46-41 1 1 8 4 0 0 . Telex: 3 3 3 3 5 ORNS. Audited circulation 1 9 8 4 January-December 8 , 0 2 4

ISSN 0 3 0 6 ^ 0 2 0 9

IABC

COS\!TES\!TS

Warsliip ' 8 6 — a review of

amphibious assault vessels by

Trevor Lenton E l 7 5

Advanced fabrication techniques for

small naval craft E191

Steam — an option for uncommitted

navies E195

Investments for the future are acts of

faith E197

France offshore — surviving for future

profits . E201

A Russian ACV acting in tlie amphibious

assault role. Page El 75.

A lower deci< module pre-outfitted and

painted at Vosper Thornycroft. Page El91

Regular Features

Commentary

E167

News Review

E169

Naval News

E173

Diarv

F ? l 1

Viewpoint

E212

T e c h n i c a l Paper

Cellularity: A n Advanced Weapon

Electronics Integration Technique by

P. J . Gates

(6)

i Naval Architect

C O N T E N T S

The N a v a l A r c h i t e c t I n t e r n a t i o n a l J o u r n a l of t h e Royal I n s t i t u t i o n of Naval A r c h i t e c t s Editor: Michael W a k e , BSc, C.Eng, M R I N A A s s i s t a n t Editor: Carol F u l f o r d , B.A.

Sales Director: Henry R. J a c k s o n A d v e r t i s e m e n t M a n a g e r : Richard Kirkby S u b s c r i p t i o n s and P u b l i c a t i o n s : Lesley S m i t h e r s Editorial a n d A d v e r t i s e m e n t O f f i c e : 10 Upper Belgrave S t r e e t , London S W I X 8 B Q . T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : Sinai, L o n d o n . Telex: 2 6 5 8 4 4 S I N A I G Telefax: 0 1 - 2 4 5 - 6 9 5 9 Ten issues published per year; J a n u a r y , February, M a r c h , A p r i l , M a y , J u n e , J u l y , S e p t e m b e r , October a n d N o v e m b e r Printed in England b y

Staples Printers St A l b a n s L i m i t e d at The Priory Press

The Institution is not as a body, responsible lor opinions expressed in The Naval Architect unless it is expressly stated that these are the Council's views,

© 1985: The Royal Institution of Naval Architects. This publication is copyright under the Berne Convention and the Internatfonal Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted without the prior permission of the copyright owners. Permission is not, however, required lo copy abstracts of papers or of articles on condition that a full reference t o the source is shown. Multiple copying of the contents

without permission is always illegal.

ADVERTISEMENT REPRESENTATIVES: France:

E. Costemend, Agence Gustav Elm, 41 Avenue Montaigne, 7 5 0 0 8 Paris, France. Tel: 7 2 0 - 2 5 - 3 0 , 7 2 3 - 3 2 - 6 7 / 9 6 - 8 5 . Telex: 2 9 0 2 6 0 GUSTELM F. Germany, Austria and Switzerland: T. Anthony, Am Lerchenberg 2 2 , D - 2 1 1 2 Jesteburg b. Hamburg, Germany. Tel: (04183) 5 5 4 1 .

Italy;

Vittorio F. Negrone, Ediconsult Internationale. Piazza Fontane Marose 3, 16123 Genoa, llaly. Tel: 5 4 3 . 6 5 9 ; 2 6 8 . 3 3 4 ; 2 6 8 . 5 1 3 . Telex: 2 1 1 1 9 7 .

Scandinavia:

AB Stephan R. G. Örn, PO Box 1 8 4 , S-27100 Ystad, Sweden,

Tel; 46-41 1-18400. Telex: 3 3 3 3 5 ORNS. A u d i t e d c i r c u l a t i o n 1 9 8 5 J a n u a r y D e c e m b e r

7 , 9 7 9

The changing face of Japanese shipbuilding.

Page E237.

Cross section of the new Fuji M30B diesel

engine. Page E247.

Mmm

Module cabin manufacture at

Govan E 2 2 5

Tug design —a review by Ken

Troup E 2 2 8

Spindrift—a new generation

tug E 2 3 2

Japanese shipbuilding—the social

dilemma E 2 3 7

New engines from Fuji and

Mirrlees . E247

Regular Features

Commentary E 2 1 5

News Review ; E 2 1 7

Naval N e w s .

, E 2 2 1

Update E 2 2 3

Trade and Equipment N e w s . . E 2 4 4

Letters t o the Editor E 2 4 6

Viewpoint

E256

T e c h n i c a l Paper

Strength Investigations of Tanker

Longitudinal Bulkhead Plating by K. V.

Taylor, H. G. Payer and P. M. S w i f t

'SSN 0 3 0 6 - 0 2 0 9

(7)

Mtect

ICI

The Naval A r c h i t e c t I n t e r n a t i o n a l J o u r n a l of t h e Royal I n s t i t u t i o n o f Naval A r c h i t e c t s Editor: Michael W a k e , BSc, C.Eng, M R I N A A s s i s t a n t Editor: Carol F u l f o r d , B.A. Sales D i r e c t o r : H e n r y R. J a c k s o n A d v e r t i s e m e n t M a n a g e r : Richard K i r k b y S u b s c r i p t i o n s and P u b l i c a t i o n s : Lesley Smithers Editorial and A d v e r t i s e m e n t O f f i c e : 10 Upper Belgrave S t r e e t , London S W I X SBQ. T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : S i n a i , L o n d o n . Telex: 2 6 5 8 4 4 S I N A I G Telefax: 0 1 - 2 4 5 - 6 9 5 9 Ten issues published per y e a r : J a n u a r y , February, M a r c h , A p r i l , May, J u n e , J u l y , S e p t e m b e r , October and N o v e m b e r Printed in England b y Staples Printers St A l b a n s L i m i t e d at T h e Priory Press

The Institution is not as a body, responsible for opinions expressed in The Neva! Architect unless it is expressly stated that these are the Council's views.

© 1 9 8 6 : The Royal Institution of Naval Architects. This publication is copyright under the Berne Convention and the International Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted without the prior permission of the copyright owners. Permission is not, however, required to copy abstracts of papers or of articles on condition that a full reference to the source is shown, ivtultiple copying of the contents

without permission is always illegal.

A D V E R T I S E M E N T R E P R E S E N T A T I V E S :

Franca:

E. Costemend, Agence Gustav Elm. 4 1 Avenue fylontaigne, 7 5 0 0 8 Paris, France. Tel: 7 2 0 - 2 5 . 3 0 , 7 2 3 - 3 2 - 6 7 / 9 8 - 8 5 . Telex: 2 9 0 2 6 0 GUSTELM F. Germany. Austria and Switzerland: T, Anthony. A m Lerchenberg 2 2 . D - 2 1 1 2 Jesteburg b. Hamburg, Germany. Tel: (041831 5 5 4 1 .

Italy:

Vittorio F. Negrone, Ediconsult Internationale, Piazza Fontane Marose 3, 1 6 1 2 3 Genoa, Italy. Tel: 5 4 3 . 6 5 9 : 2 6 8 . 3 3 4 : 2 6 8 . 5 1 3 . Telex: 2 1 1 1 9 7 .

Scandinavia:

AB Stephan R. G. Örn, PO Box 184, S-27100 Ystad, Sweden.

Tel: 4 6 - 4 1 1 - 1 8 4 0 0 . Telex: 3 3 3 3 5 ORNS. TTJ ^ ll A u d i t e d c i r c u l a t i o n 1 9 8 5

l i i f i i d j J a n u a r y D e c e m b e r

7 , 9 7 9

ISSN 0 3 0 6 - 0 2 0 9

J U L Y / A U G U S T 1 9 8 6

C O N T E N T S

J U L Y / A U G U S T

Robotics in shipbuilding - a detailed

! S t u d y b y

John Kalogerakis . E 2 6 6

Long strol<e medium speed diesel

engines E 2 7 7

Stena Seawell — a sophisticated

off-shore support vessel E 2 8 7

A robot for welding on lifting points currentiy

in operation at the Mitsui Works in Japan, page

E266.

Stena Seaweii's sophisticated lifting gear, page

E287.

Regular Features

Commentary

E 2 5 9

News Review

E 2 6 1

Naval News

E 2 6 5

Trade and Equipment News E 2 8 5

Viewpoint

E 2 9 6

T e c h n i c a l Paper

Simulation in Marine Design and

Operation by B. Clark, K. J . Lewis and

D. S. Aldwinckle

(8)

è

Naval Architect

The Naval A r c h i t e c t I n t e r n a t i o n a l J o u r n a l o f t h e Royal I n s t i t u t i o n o f Naval A r c h i t e c t s Editor: M i c h a e l W a k e , B S c , C.Eng, MRINA A s s i s t a n t Editor: Carol F u l f o r d , B.A. Sales D i r e c t o r : H e n r y R. J a c k s o n A d v e r t i s e m e n t M a n a g e r : Richard Kirkby S u b s c r i p t i o n s a n d P u b l i c a t i o n s : Lesley Smithers Editorial a n d A d v e r t i s e m e n t O f f i c e : 10 Upper Belgrave S t r e e t , L o n d o n S W I X BBQ. T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : Sinai, L o n d o n . Telex: 2 6 5 8 4 4 S I N A I G T e l e f a x : 0 1 - 2 4 5 - 6 9 5 9 Ten issues published per year: J a n u a r y , February, M a r c h , A p r i l , M a y , J u n e , J u l y , S e p t e m b e r , O c t o b e r and N o v e m b e r Printed in England b y Staples Printers S t A l b a n s L i m i t e d at T h e Priory Press

The Institution is not as a body, responsible for opinions expressed i n The Navel Architect unless it is expressly stated that these are the Council's views.

© 1986; The Royal Institution o f Naval Architects. This publication is copyright under the Berne Convention and the International Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted without the prior permission of the copyright owners. Permission is not. however, required to copy abstracts of papers or of articles on condition that a full reference to the source is shown. Multiple copying of the contents

without permission is always illegal.

ADVERTISEMENT REPRESENTATIVES: France:

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llaly:

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Lojjjy.JI

' J a n u a r y D e c e m b e r 7 , 9 7 9

ISSN 0 3 0 6 - 0 2 0 9

Programming tiie weiding robot at Swan Hunters to produce manlioies for the LSD ship Sir Galafiad. John Kaiogeral<is gives fur-ther food for thought on the robotics in-dustry in his commentary Ipage E299).

C O N T E N T S SEPTER/3BEIR!

Cfiao Ta H8 — a trailing suction

hopper dredger for use in

Thailand E306

First commercial w i n g s a i l . . . .E319

Back t o Basics —microcomputers

for analysis E 3 2 1

Time for a collision-resistant

LPG fleet E 3 3 1

Maintaining and improving the

performance of C P .

propellers E328

Annual review of gears,

clutches and couplings. . . . E333

Chao T a H8, a sophisticated dredger design-ed by Robin A. WiUiams & Co Ltd. in this view, stowage of the dredge pipe is highiighted (page E306).

Regular Features

Commentary

. E299

News Review

. E 3 0 1

Naval News

. E 3 0 5

Trade and Equipment N e w s . . E 3 2 7

View/noint

E340

T e c h n i c a l Paper

The E f f e c t of V a r i a t i o n in

Hydrodynamic Coefficients on t h e

Loading on Jacket Structures and the

Implications for Tank Testing by M .

Abdelradi and N. S. Miller

(9)

è Mavall ikdiitect

T h e N a v a l A r c h i t e c t I n t e r n a t i o n a l J o u r n a l o f t h e Royal I n s t i t u t i o n o f N a v a l A r c h i t e c t s Editor: M i c h a e l W a k e , B S c , C.Eng, M R I N A A s s i s t a n t Editor: Carol F u l f o r d , B . A . Sales D i r e c t o r : Henry R. J a c k s o n A d v e r t i s e m e n t IVIanager: Richard Kirkby S u b s c r i p t i o n s a n d P u b l i c a t i o n s : Lesley S m i t h e r s Editorial a n d A d v e r t i s e m e n t O f f i c e : 10 Upper Belgrave S t r e e t , London S W I X 8 B Q . T e l e p h o n e : 0 1 - 2 3 5 4 6 2 2 / 4 . T e l e g r a m s : S i n a i , L o n d o n . Telex: 2 6 5 8 4 4 S I N A I G T e l e f a x : 0 1 - 2 4 5 - 6 9 5 9 Ten issues p u b l i s h e d per y e a r : J a n u a r y , February, M a r c h , A p r i l , M a y , J u n e , J u l y , S e p t e m b e r , O c t o b e r and N o v e m b e r Printed in England b y

Staples Printers St A l b a n s Limited at T h e Priory Press

The Institution is not as a body, responsible for opinions expressed in The Naval Architect unless it is expressly stated that these are the Council's views.

© 1986; The Royal Institution o f Naval Architects. This publication is copyright under the Berne Convention and the International Copyright Convention. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted without the prior permission of the copyright owners. Permission is not. however, required to copy abstracts of papers or of articles on condition that a full reference, to the source Is shown. Multiple copying of the contents

without permission is always Illegal.

A D V E R T I S E M E N T REPRESENTATIVES: France;

E. Costemend, Agence Gustav Elm, 4 1 Avenue Montaigne, 7 5 0 0 8 Paris, France, Tel; 7 2 0 - 2 5 - 3 0 , 7 2 3 - 3 2 - 6 7 / 9 6 - 8 5 . Telex; 2 9 0 2 6 0 GUSTELM F. Germany, Austria and Switzerland; T, Anthony. A m Lerchenberg 22, D - 2 1 1 2 Jesteburg b. Hamburg, Germany. Tel; 1041831 5 5 4 1 .

llaly;

Vittorio F. Negrone. Ediconsult Internationale, Piazza Fontane Marose 3, 16123 Genoa, Italy. Tel; 543.659; 2 6 8 . 3 3 4 ; 2 6 8 . 5 1 3 . Telex; 2 1 1 1 9 7 .

Scandinavia;

AB Stephan R. G. Orn. PO Box 1 84. S-27100 Ystad, Sweden.

Tek 4 6 - 4 1 1 18400. Telex; 3 3 3 3 5 ORNS. A u d i t e d c i r c u l a t i o n 1 9 8 5 J a n u a r y D e c e m b e r 7 , 9 7 9

ISSN 0 3 0 6 - 0 2 0 9

260 mm bore low speed two-stroke diesel engine launched by MAN-B & W, page E353.

Front cover and above; the innovative short see 'Ro-Lo' Alster Rapid. Aii four cargo decl(s above tank top are entirely compos-ed of removable flush-fitting panels, each level, in fact, is a stowabie MGN hatch cover which completely spans the hull. Circle No. 241.

C O N T E N T © O C T O B E R

Smallest bore two-stroke engine

from M A N - B & W E 3 5 3

Black box or black art?

by Bob Spencer E359

25 years since Hoare-RIB

development by Stanley

Williams E 3 6 5

Speed and power correction for

the same rpm E380

A method of modification of a

pressure pulse due t o an

underwater explosion

by R. Mackenzie E381

Lightweight design and low cost

construction E388

Regular Features

Commentary E 3 4 3

News Review E 3 4 5

Naval News E 3 4 9

Update E351

Letters t o the Editor E357

Trade and Equipment N e w s . . E 3 7 6

Viewpoint . E 3 8 8

T e c h n i c a l Paper

Structural Reliability of Stiffened

Panels by D. K. Hart, S. E. Rutherford

and A . H. S. W i c k h a m .

(10)

^ Naval Architect

The Naval A r c h i t e c t

International Journal of the Royal

Institution of Naval A r c h i t e c t s

Editor:

Michael W a k e , BSc, C.Eng, IVIRINA

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May, J u n e , July, September,

October a n d November

Printed in England b y

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at The Priory Press

The Institution is not as a body, responsible for opinions expressed in The Naval Architect unless it Is expressly stated that these are the Council's views.

© 1986: The Royal Institution of Naval Architects. This publication is copyright under the Berne Convention and the International Copyright Convention. A l l rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transnnitted without the prior permission of the copyright ov/ners. Permission is not. however, required lo copy abstracts of papers or of articles on condition that a full reference to the source is shown. Multiple copying of the contents

without permission is always illegal.

A D V E R T I S E M E N T

R E P R E S E N T A T I V E S :

Germany. Austria and Switzerland: T. Anthony, A m Lerchenberg 2 2 , D - 2 1 12 Jesteburg b. Hamburg, Germany. Tel: (041831 5 5 4 1 .

llaly:

Vittorio F. (Negrone, Ediconsult Internationale, Piazza Fontane fvlarose 3. 16123 Genoa, llaly. Tel: 5 4 3 . 6 5 9 ; 2 6 8 . 3 3 4 ; 2 6 8 . 5 1 3 . Telex; 2 1 1 1 9 7 .

Scandinavia;

AB Stephan R. G. Örn, PO Box 184, S-27100 Ystad, Sweden,

Tel: 46-41 1-18400. Telex; 3 3 3 3 5 ORNS.

Audited circulation 1 9 8 5

January December 7 , 9 7 9

ISSN 0 3 0 6 - 0 2 0 9

Air propeller driven ships? See our annual

hovercraft review (p. E411).

CQRjTElMTS W O V E M B E R

No respite from shipbuilding

recession—the current state

of affairs in West Germany. . .E400

Propulsion round-up —Doug

Woodyard reviews the

latest developments E 4 0 3

Annual hovercraft review by

Alan Bliault 411

The Safeship Project —Ship

Stability and S a f e t y

-James Paffett comments

upon the papers presented

at this recent RINA

conference E 4 1 6

Regular Features

Commentary E391

News Review E 3 9 3

Naval News E 3 9 7

Update E 3 9 9

Trade and Equipment News . . E407

Letters t o the Editor E 4 1 4

RINA Affairs E421

Coclipit view of the Siingsby amphibious D'\ar)f E 4 2 3

hovercraft (p. E424h V i e w p o i n t E 4 2 4

T e c h n i c a l Paper

Towards More Effective Structural

Design Through Synthesis and

Op-timisation of Relative Fabrication

Costs by I. E. Winkle and D. Baird

Cytaty

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