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 4The 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
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
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
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 4An Integrated Approach t o Ship
Synthesis by David A n d r e w s
ISSN 0 3 0 6 - 0 2 0 9
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
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
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 PressThe 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
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 PressThe 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:
E. Costemend.^Agence Gustav Elm, 41 Avenue fvlontaigne, 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: 1041831 5 5 4 1 .
llaly:
Vittorio F. Negrone, Ediconsult Internationale, Piazza Fontane fvlarose 3, 16123 Genoa, Italy. Tel: 543.659; 2 6 8 . 3 3 4 ; 2 6 8 . 5 1 3 . Telex; 21 1197.
Scandinavia:
AB Stephan R. G. Örn, PO Box 1 8 4 , S-27100 Ystad, Sweden.
Tel: 4 6 - 4 1 1 - 1 8 4 0 0 . Telex: 3 3 3 3 5 ORNS. " D iT^ I ^ ^ d ' * ^ " ^ c i r c u l a t i o n 1 9 8 5
Lojjjy.JI
' J a n u a r y D e c e m b e r 7 , 9 7 9ISSN 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
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 yStaples 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 .
^ 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
Assistant Editor:
Carol Fulford, B.A.
Sales Director: Henry R. Jackson
A d v e r t i s e m e n t Manager:
Richard Kirkby
Subscriptions and Publications:
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 Street,
London S W I X 8 B Q .
Telephone: 0 1 - 2 3 5 4 6 2 2 / 4 .
Telegrams: Sinai, L o n d o n ,
t e l e x : 2 6 5 8 4 4 SINAI G
Telefax: 0 1 - 2 4 5 - 6 9 5 9
Ten issues published per year:
January, February, M a r c h , A p r i l ,
May, J u n e , July, September,
October a n d November
Printed in England b y
Staples Printers St A l b a n s Limited
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.