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RULES FOR CLASSIFICATION OF

DETNORSKEVERITASAS

The content of this service document is the subect of inte!!ectu"! #ro#ert$ ri%hts reserved b$ Det Nors&e Verit"s AS 'DNV() The user"cce#ts th"t it is #rohibited b$ "n$one e!se but DNV "nd*or its !icensees to offer "nd*or #erform c!"ssific"tion+ certific"tion "nd*orverific"tion services+ inc!udin% the issu"nce of certific"tes "nd*or dec!"r"tions of conformit$+ ,ho!!$ or #"rt!$+ on the b"sis of "nd*or#ursu"nt to this document ,hether free of ch"r%e or ch"r%e"b!e+ ,ithout DNV-s #rior ,ritten consent) DNV is not res#onsib!e for theconse.uences "risin% from "n$ use of this document b$ others)

The electronic pdf version of this document found through http://www.dnv.com is the officially binding version

Ships

/ART 0 C1A/TER 2

NE34UILDIN5S

1ULL AND E6UI/7ENT 8 7AIN CLASS

1u!! Structur"! Desi%n+Shi#s ,ith Len%th

299 metres "nd "bove:ANUAR;

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FOREWORD

DNV is " %!ob"! #rovider of &no,!ed%e for m"n"%in% ris&) Tod"$+ s"fe "nd res#onsib!e business conduct is both " !icenseto o#er"te "nd " com#etitive "dv"nt"%e) Our core com#etence is to identif$+ "ssess+ "nd "dvise on ris& m"n"%ement) Fromour !e"din% #osition in certific"tion+ c!"ssific"tion+ verific"tion+ "nd tr"inin%+ ,e deve!o# "nd "##!$ st"nd"rds "nd best

#r"ctices) This he!#s our customers s"fe!$ "nd res#onsib!$ im#rove their business #erform"nce) DNV is "n inde#endentor%"nis"tion ,ith dedic"ted ris& #rofession"!s in more th"n 299 countries+ ,ith the #ur#ose of s"fe%u"rdin% !ife+ #ro#ert$"nd the environment)

The Ru!es !"$ do,n technic"! "nd #rocedur"! re.uirements re!"ted to obt"inin% "nd ret"inin% " C!"ss Certific"te) It is used

"s " contr"ctu"! document "nd inc!udes both re.uirements "nd "cce#t"nce criteri")

> Det Nors&e Verit"s AS :"nu"r$

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'mended (uly #)*+ ules for "hips, (anuary #)*+

-t. /h.* /H'N01" 2 /!1N3 2 -age

DETNORSKEVERITAS AS

CHANGES CURRENT

General

This document su#ersedes the :"nu"r$

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-t. /h.* /ontents /H'N01" 2 /!1N3 2 -age +

DETNORSKEVERITAS AS

CONTENTS

C1AN5ES 8 CURRENT ))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) 0

Se%& " General re'uirements &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& ""

A& Classi,i%ati+n&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&""A 299 A##!ic"tion))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))22A

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4 J99 Im#"ct stren%th )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))004 99 F"ti%ue ))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))0=4 99 Loc"! vibr"tions ))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))0=4 99 7isce!!"neous stren%th re.uirements))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))0=4 2999 Re!i"bi!it$?b"sed "n"!$sis of hu!! structures )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))0=

C& 8+%al desi)n &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&6#C 299 Definition of s#"n for stiffeners "nd %irders)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))0=

C

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DETNORSKEVERITAS AS

F

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DETNORSKEVERITAS AS

E 099 Stren%thenin% "%"inst !i.uid im#"ct #ressure in !"r%er t"n&s ))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) 22JE =99 F"ti%ue contro! of !on%itudin"!s+ m"in fr"mes "nd -t,een dec& fr"mes))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))22J

Se%& 5 De%; stru%tures&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& ""5

A& General&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&""5A 299 Introduction)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))22A

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DETNORSKEVERITAS AS

D =99 A!uminium dec&houses)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))20

Se%& "" Weldin) and 1eld %+nne%ti+ns&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& "67

A& General&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&"67A 299 Introduction)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))20A

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DETNORSKEVERITAS AS

Se%& "# Stru%tures ,+r hi)h temperature %ar)+ &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& "4:

A& General&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&"4:A 299 Introduction)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))2JA

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-t. /h.* /ontents /H'N01" 2 /!1N3 2 -age *)

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A& >ntr+du%ti+n&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&"5"A 299 Sco#e "nd descri#tion )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))22

-& Cal%ulati+n pr+%edure &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&"5"4 299 Estim"tion of u!tim"te stress))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) 224

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-t. /h.* "ec.* 0eneral reuirements 2 -age **

DETNORSKEVERITAS AS

SECT>ON " GENERA8 RE?U>RE(ENTS

A& Classi,i%ati+n

A "!! Appli%ati+n

"!" The ru!es in this ch"#ter "##!$ to stee! hu!! structures for "ssi%nment of the m"in c!"ss for shi#s ,ith!en%th 299 metres "nd "bove+ e@ce#t for oi! t"n&ers "nd bu!& c"rriers ,ith m"nd"tor$ c!"ss not"tion CSR)A##!ic"tion of the CSRnot"tion is described in /t) Ch)2 for oi! t"n&ers "nd /t) Ch)< for bu!& c"rriers+ "ndin CSR?1 /t)2 for oi! t"n&ers "nd bu!& c"rriers covered b$ SOLAS II?2*0?29)

The re.uirements for m"teri"! certific"tes in Sec)< A

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-t. /h.* "ec.* 0eneral reuirements 2 -age *#

DETNORSKEVERITAS AS

T me"n mou!ded summer dr"u%ht in m)

mou!ded dis#!"cement in t in s"!t ,"ter 'densit$ 2)9

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-t. /h.* "ec.* 0eneral reuirements 2 -age *+

DETNORSKEVERITAS AS

Other terms used "reH

G f!oor '" bottom tr"nsverse %irder(G strin%er '" horiont"! %irder()

". #tiffeneris " co!!ective term for " second"r$ su##ortin% member) Other terms used "reH

G fr"me

G bottom !on%itudin"!G inner bottom !on%itudin"!G reversed fr"me 'inner bottom tr"nsverse stiffener(G side !on%itudin"!G be"mG dec& !on%itudin"!G bu!&he"d !on%itudin"!)

Fi)& Tan; )irders

"4 #upporting structure.Stren%thenin% of the vesse! structure+ e)%) " dec&+ in order to "ccommod"te !o"ds"nd moments from " he"v$ or !o"ded obect)

": oundation) A device tr"nsferrin% !o"ds from " he"v$ or !o"ded obect to the vesse! structure)

"5 robability density function f(!) The #rob"bi!it$ th"t " re"!is"tion of " continuous r"ndom v"ri"b!e @ f"!!sin the interv"! '@+ @d@( is f'@(d@) f'@( is the deriv"tive of the cumu!"tive #rob"bi!it$ function F'@()

"7 %umulative probability (!is defined "sH

! 3ceedance probability 4(!is defined "sH

6'@( 2 8 F'@(

" robability of eceedance"or eceedance probabilitym"$ be i!!ustr"ted b$ the fo!!o,in% e@"m#!eH @sh"!! be t"&en "t " #rob"bi!it$ of e@ceed"nce of .+ me"ns th"t the v"ri"b!e+ @+ sh"!! be t"&en "s the v"!ue+ @.+defined "s the u##er 5.u"nti!e in the !on% term distribution of @)

4uantile) The # .u"nti!e m"$ be defined "s the v"!ue+ @#+ of " r"ndom v"ri"b!e @+ ,hich corres#ond to "

fr"ction # of the outcomes of the v"ri"b!e)

"ID1 3'N9

D1/9 3'N"V1"1

"ID1 V13I/':

"1N31 3'N9

D1/9 3'N"V1"1

D1/9 /1N31

:IN1 0ID1

D1/9 "ID1

0ID1

:

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-t. /h.* "ec.* 0eneral reuirements 2 -age *4

DETNORSKEVERITAS AS

I)e) @#is thep.u"nti!e of the v"ri"b!e @) One m"$ denote @#"s the !o,erp.u"nti!e of @+ or "!tern"tive!$ "s theu##er 28p.u"nti!e of @)

- 6!! Ship types

6!" Apassenger shipis " shi# ,hich c"rries more th"n 2< #"ssen%ers)

6! A cargo shipis "n$ shi# ,hich is not " #"ssen%er shi#)

6!6 A tan*eris " c"r%o shi# constructed or "d"#ted for the c"rri"%e in bu!& of !i.uid c"r%oes)

'# .u"nti!e of P U##er # .u"nti!e of P

Lo,er '28 #( .u"nti!e of P(

Fi)& 69r+/a/ility density ,un%ti+n

C& D+%umentati+n

C "!! D+%umentati+n re'uirements

"!" Document"tion sh"!! be submitted "s re.uired b$ T"b!e C2)

Ta/le C" D+%umentati+n re'uirements

6b7ect ,ocumentation type 8dditional description 9nfo

Shi# Q929 8 5ener"! "rr"n%ement #!"n FI

1u!! structure

1909 ? T"n& "nd c"#"cit$ #!"n FI

19B9 8 Structur"! dr",in% Dec&s "nd inner bottom) A/

19B9 8 Structur"! dr",in% Tr"nsverse bu!&he"ds) A/

19B9 8 Structur"! dr",in% Lon%itudin"! bu!&he"ds) A/

19B9 8 Structur"! dr",in% Fore shi#) A/

19B9 8 Structur"! dr",in% En%ine room "re") A/

19B9 8 Structur"! dr",in% Aft shi#) A/19B< ? 7idshi# section dr",in% A/

19J9 ? She!! e@#"nsion dr",in% A/

19J2 8 Fr"min% #!"n) A/

19J< 8 Lon%itudin"! section dr",in% A/

19< 8 Lon%itudin"! stren%th "n"!$sis FI

1229 ? Lo"din% m"nu"! A/

Su#erstructure 19B9 8 Structur"! dr",in% A/

Dec& house structures 19B9 8 Structur"! dr",in% A/

Su##ortin% structures forhe"v$ or !o"ded obects

19B9 8 Structur"! dr",in%If st"tic force B9 &N or bendin%moment "t dec& 299 &Nm)

A/

Corrosion #revention s$stem Q909 8 Arr"n%ement #!"n S"crifici"! "nodes) A/

exceedance

probabilitycumulative

probability p

xp x

fx>x?

*@p

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DETNORSKEVERITAS AS

"! For c!"ss not"tion BIS+ "ddition"! document"tion sh"!! be submitted "s re.uired b$ T"b!e C

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DETNORSKEVERITAS AS

D #!! Rudder

#!" 4e"rin% m"teri"!s sh"!! be st"in!ess stee!+ brone or "n "##roved t$#e of s$nthetic m"teri"! "nd sh"!!s"tisf$ the re.uirements in Ch)0 Sec)

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-t. /h.* "ec.# ;aterials 2 -age *7

DETNORSKEVERITAS AS

SECT>ON (ATER>A8S

A& General

A "!! >ntr+du%ti+n

"!" In this section re.uirements re%"rdin% the "##!ic"tion of v"rious structur"! m"teri"!s "s ,e!! "s #rotectionmethods "nd m"teri"!s "re %iven)

A !! (aterial %erti,i%ates

!" Ro!!ed stee! "nd "!uminium for hu!! structures "re norm"!!$ to be su##!ied ,ith DNV-s m"teri"!certific"tes in com#!i"nce ,ith the re.uirements %iven in /t)

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For A 0=?stee! ',ith $ie!d #oint not !ess th"n 00B N*mm2( the m"teri"! f"ctor m"$ be t"&en "s f2 2)0B)

!# In order to distin%uish bet,een the m"teri"! %r"de re.uirements for different hu!! #"rts+ v"rious m"teri"!c!"sses "re "##!ied "s defined in T"b!e 42)

The stee! %r"de is to corres#ond to the "s?bui!t #!"te thic&ness ,hen this is %re"ter th"n the ru!e re.uirement)

- 6!! -asi% re'uirements6!" 7"teri"!s in the v"rious stren%th members "re not to be of !o,er %r"de th"n those corres#ondin% to them"teri"! c!"sses "nd %r"des s#ecified in T"b!e 4< to T"b!e 4J) 5ener"! re.uirements "re %iven in T"b!e 4

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DETNORSKEVERITAS AS

'IACS UR SJ(

6!6 For m"teri"!s inH

G hu!! e.ui#ment "nd "##end"%es 'sternfr"mes "nd rudders+ "nchorin% "nd moorin% e.ui#ment+ m"sts "ndri%%in%+ cr"ne #edest"!s etc)(+ see Ch)0

G structure "nd e.ui#ment re!"ted to "ddition"! c!"ss not"tions+ see /t)B "nd /t)JG hu!! structures re!"ted to inst"!!"tions for ,hich no not"tion is "v"i!"b!e or re.uested+ these ,i!! be

considered "nd not"tion re.uirements usu"!!$ m"int"ined)

- #!! Re'uirements ,+r l+1 air temperatures

#!" In shi#s intended to o#er"te for !on%er #eriods in "re"s ,ith !o, "ir tem#er"tures 'i)e) re%u!"r servicedurin% ,inter to Arctic or Ant"rctic ,"ters(+ the m"teri"!s in e@#osed structures ,i!! be s#eci"!!$ considered)A##!ic"b!e ru!e re.uirements "re found in /t)B Ch)2 Sec))

- .!! (aterial at %r+ss0

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-t. /h.* "ec.# ;aterials 2 -age #*

DETNORSKEVERITAS AS

C& Alternati2e stru%tural materials

C "!! Aluminium

"!" A!uminium "!!o$ for m"rine use m"$ be "##!ied in su#erstructures+ dec&houses+ h"tch covers+ h"tchbe"ms "nd sundr$ items+ #rovided the stren%th of the "!uminium structure is e.uiv"!ent to th"t re.uired for "stee! structure)

"! For ro!!ed #roducts t"&in% #"rt in the !on%itudin"! stren%th+ "!!o$s m"r&ed A sh"!! be used) The "!!o$ sh"!!be chosen considerin% the stress !eve! concerned)

"!6 In ,e!d ones of ro!!ed or e@truded #roducts 'he"t "ffected ones( the mech"nic"! #ro#erties %iven fore@truded #roducts m"$ in %ener"! be used "s b"sis for the sc"nt!in% re.uirements)

Note th"t for the "!!o$ NV?A27%Si! the most unf"vour"b!e #ro#erties corres#ondin% to ?T= condition sh"!! beused)

"!# 3e!din% consum"b!es %ivin% " de#osit ,e!d met"! ,ith mech"nic"! #ro#erties not !ess th"n thoses#ecified for the ,e!d ones of the #"rent m"teri"! sh"!! be chosen)

"!. The v"rious formu!"e "nd e@#ressions invo!vin% the f"ctor f2 m"$ norm"!!$ "!so be "##!ied for"!uminium "!!o$s ,hereH

f $ie!d stress in N*mm2"t 9)

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For end connection of corru%"tions+ %irders "nd stiffeners the f"ctor shou!d due to f"ti%ue not be t"&en %re"ter th"nH

For intermedi"te tem#er"tures !ine"r inter#o!"tion m"$ be "##!ied for the f2f"ctor)

???e?n?d???of???5?u?i?d?"?n?c?e???n?o?t?e???

C 6!! Steel sand1i%h panel %+nstru%ti+n

6!" Stee! s"nd,ich #"ne! construction for m"rine use m"$ be "##!ied in structur"! #"ne!s #rovided thestren%th of the s"nd,ich construction is e.uiv"!ent to th"t re.uired in the Societ$-s ru!es for " stiffened stee!structure "nd the fire s"fet$ is e.uiv"!ent to th"t re.uired in the Societ$-s ru!es for " stee! construction)

Guidan%e n+te@

For SOLAS vesse!s fire s"fet$ e.uiv"!ence of stee! s"nd,ich #"ne! needs bein% e@#!icit!$ demonstr"ted "nddocumented b$ "n "n"!$sis "ccordin% to Ch)II?< Re%)2 of SOLAS ,hen the construction devi"tes from the

#rescri#tive re.uirements of the s"me Ch)II?n%reased C+rr+si+n (ar)in

6!" For the m"in c!"ss " corrosion "ddition t&in mm "s %iven in T"b!e D2 is "dded to the reduced sc"nt!in%sin b"!!"st t"n&s+ c"r%o oi! t"n&s "nd c"r%o ho!ds in bu!& c"r%o c"rriers "s s#ecified in

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DETNORSKEVERITAS AS

u U##er #"rt of the shi# '"bove D*

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DETNORSKEVERITAS AS

6!: The "ddition"! corrosion thic&ness tcsh"!! be %iven in the desi%n dr",in%s in the form of " %ener"! note)

Guidan%e n+te@

E@"m#!eH 7"r&in% on the desi%n dr",in%H

ICM( ) /!"tin%+ mm

Stiffeners ,eb*f!"n%e+ mm

5irders ,eb*f!"n%e+ mm


Ta/le D C+rr+si+n additi+n t%in mm

9nternal members and plateboundary between spaces of the given category

Tan*/hold region

ithin 1.; m below weatherdec* tan* or hold top

3lsewhere

4"!!"st t"n& 2( 0)9 2)B

C"r%o oi! t"n& on!$

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-t. /h.* "ec. Design principles 2 -age #4

DETNORSKEVERITAS AS

SECT>ON 6 DES>GN 9R>NC>98ES

A& Su/di2isi+n and arran)ement

A "!! General

"!" The hu!! sh"!! be subdivided into ,"terti%ht com#"rtments)Guidan%e n+te@

The fo!!o,in% re.uirements "re considered to meet the re!ev"nt re%u!"tions of the Intern"tion"! Convention on Lo"dLines+ 2JJ "nd SOLAS 2= "s "mended) Attention shou!d+ ho,ever+ be %iven to #ossib!e "ddition"! re.uirementsof the 7"ritime Authorities in the countr$ in ,hich the shi# sh"!! be re%istered)

For #"ssen%er shi#s see /t)B Ch)< Sec)

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@c'm"@imum( 9)9 LF8 @r 'm(

For shi#s ,ith ordin"r$ bo, sh"#eH

@r 9

For shi#s h"vin% "n$ #"rt of the under,"ter bod$ e@tendin% for,"rd of /F+ such "s " bu!bous bo,+ @rsh"!! bet"&en "s the sm"!!est ofH

@r 9)B @b 'm(

@r 9)92B LF 'm(

@r 0)9 'm(

@b dist"nce from /Fto the for,"rd end of the bu!bous bo,+ see Fi%)2)

Fi)& "-ul/+us /+1 shape

#! An incre"se of the m"@imum dist"nce %iven b$ =92 m"$ be "cce#t"b!e u#on consider"tion in e"ch c"se+

#rovided " f!o"t"bi!it$ "nd st"bi!it$ c"!cu!"tion sho,s th"t+ ,ith the shi# fu!!$ !o"ded to summer dr"u%ht oneven &ee!+ f!oodin% of the s#"ce for,"rd of the co!!ision bu!&he"d ,i!! not resu!t in "n$ other com#"rtments

bein% f!ooded+ nor in "n un"cce#t"b!e !oss of st"bi!it$)

#!6 7inor ste#s or recesses in the co!!ision bu!&he"d m"$ be "cce#ted+ #rovided the re.uirements tominimum "nd m"@imum dist"nces from /F"re com#!ied ,ith)

#!# In shi#s h"vin% " visor or doors in the bo, "nd " s!o#in% !o"din% r"m# formin% #"rt of the co!!isionbu!&he"d "bove the freebo"rd dec&+ th"t #"rt of the c!osed r"m# ,hich is more th"n

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DETNORSKEVERITAS AS

A .!! Hei)ht +, 1aterti)ht /ul;heads

.!" The ,"terti%ht bu!&he"ds "re in %ener"! to e@tend to the freebo"rd dec&) After#e"& bu!&he"ds m"$+ho,ever+ termin"te "t the first ,"terti%ht dec& "bove the ,"ter!ine "t dr"u%ht T)

For "n "fter#e"& bu!&he"d "!so bein% " m"chiner$ bu!&he"d+ see B90)

.! For shi#s h"vin% com#!ete or !on% for,"rd su#erstructures+ the co!!ision bu!&he"d sh"!! e@tend,e"therti%ht to the ne@t dec& "bove the freebo"rd dec&) The e@tension need not be fitted direct!$ over the

bu!&he"d be!o,+ #rovided the re.uirements for dist"nces from /F "re com#!ied ,ith+ "nd the #"rt of thefreebo"rd dec& formin% the ste# is m"de ,e"therti%ht)

.!6 4u!&he"ds sh"!! be fitted se#"r"tin% the m"chiner$ s#"ce from c"r%o "nd #"ssen%er s#"ces for,"rd "nd"ft "nd m"de ,"terti%ht u# to the freebo"rd dec&) After#e"&*m"chiner$ s#"ce bu!&he"ds m"$ termin"te "s %ivenin B92 ,hen the "ft s#"ce is not uti!ised for c"r%o or #"ssen%ers)

For shi#s ,ithout " !on% for,"rd su#erstructure "nd for ,hich the co!!ision bu!&he"d h"s not been e@tended tothe ne@t dec& "bove the freebo"rd dec&+ "n$ o#enin%s ,ithin the for,"rd su#erstructure %ivin% "ccess to s#"ces

be!o, the freebo"rd dec&+ sh"!! be m"de ,e"therti%ht)

.!# For shi#s ,ith " continuous dec& be!o, the freebo"rd dec& "nd ,here the dr"u%ht is !ess th"n the de#thto this second dec&+ "!! bu!&he"ds e@ce#t the co!!ision bu!&he"d m"$ termin"te "t the second dec&) In such c"sesthe en%ine c"sin% bet,een second "nd u##er dec& sh"!! be "rr"n%ed "s " ,"terti%ht structure+ "nd the seconddec& sh"!! be ,"terti%ht outside the c"sin% "bove the en%ine room)

.!. In shi#s ,ith " r"ised .u"rter dec&+ the ,"terti%ht bu!&he"ds ,ithin the .u"rter dec& re%ion sh"!! e@tendto this dec&)

A 4!! Openin) and %l+sin) applian%es&

4!" O#enin%s m"$ be "cce#ted in ,"terti%ht bu!&he"ds+ e@ce#t in th"t #"rt of the co!!ision bu!&he"d ,hichis situ"ted be!o, the freebo"rd dec&) 1o,ever+ See "!so J9B)

4! O#enin%s situ"ted be!o, the freebo"rd dec& "nd ,hich "re intended for use ,hen the shi# is "t se"+ sh"!!h"ve ,"terti%ht doors+ ,hich sh"!! be c!ose"b!e from the freebo"rd dec& or #!"ce "bove the dec&) The o#er"tin%device sh"!! be ,e!! #rotected "nd "ccessib!e)

4!6 3"terti%ht doors "re "cce#ted in the en%ine room -t,een dec& bu!&he"ds+ #rovided " si%nbo"rd is fitted"t e"ch door sti#u!"tin% th"t the door be &e#t c!osed ,hi!e the shi# is "t se")

This "ssum#tion ,i!! be st"ted in the "##endi@ to c!"ssific"tion certific"te)4!# O#enin%s in the co!!ision bu!&he"d "bove the freebo"rd dec& sh"!! h"ve ,e"therti%ht doors or "ne.uiv"!ent "rr"n%ement) The number of o#enin%s in the bu!&he"d sh"!! be reduced to the minimum com#"tib!e,ith the desi%n "nd norm"! o#er"tion of the shi#)

4!. No door+ m"nho!e or venti!"tion duct or "n$ other o#enin% ,i!! be "cce#ted in the co!!ision bu!&he"dbe!o, the freebo"rd dec&)

The co!!ision bu!&he"d m"$+ ho,ever+ be #ierced b$ necess"r$ #i#es to de"! ,ith f!uids in the fore#e"& t"n&+#rovided the #i#es "re fitted ,ith v"!ves c"#"b!e of bein% o#er"ted from "bove the freebo"rd dec&) The v"!ves"re %ener"!!$ to be fitted on the co!!ision bu!&he"d inside the fore#e"&) The v"!ves m"$ be fitted on the "fterside of the bu!&he"d #rovided th"t the v"!ves "re re"di!$ "ccessib!e under "!! service conditions "nd the s#"cein ,hich the$ "re !oc"ted is not " c"r%o s#"ce) See "!so /t)= Ch)J Sec)0 A099)

A :!! C+,,erdams and tan; %+ntents:!" The fo!!o,in% dedic"ted t"n& t$#es sh"!! be se#"r"ted from e"ch other b$ cofferd"msH

G t"n&s for miner"! oi!G t"n&s for ve%et"b!e oi!G t"n&s for fresh,"ter for hum"n consum#tion)

Furthermore+ cofferd"ms sh"!! be "rr"n%ed se#"r"tin% t"n&s c"rr$in% fresh ,"ter for hum"n consum#tion fromother t"n&s cont"inin% subst"nces h""rdous to hum"n he"!th)

Guidan%e n+te@

Norm"!!$ t"n&s for fresh ,"ter "nd ,"ter b"!!"st "re considered non?h""rdous)


A 5!! F+r1ard %+mpartment %+ntents5!" In shi#s of =99 %ross tonn"%e "nd "bove+ com#"rtments for,"rd of the co!!ision bu!&he"d sh"!! not be"rr"n%ed for c"rri"%e of oi! or other !i.uid subst"nces ,hich "re f!"mm"b!e)

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DETNORSKEVERITAS AS

Fi)& #F+re%astle* pr+%edure

hf h"!f st"nd"rd hei%ht of su#erstructure "s defined in Re%u!"tion 00

ht

Guidan%e n+te@

ICLL 0 re.uire "ddition"! reserve buo$"nc$ in the fore end for "!! shi#s "ssi%ned " t$#e 4 freebo"rd+ other th"n oi!t"n&ers+ chemic"! t"n&ers "nd %"s c"rriers


A "!!! A%%ess t+ and 1ithin narr+1 /allast tan;s

"!!" Vesse!s+ e@ce#t those e@c!usive!$ intended for the c"rri"%e of cont"iners+ sh"!! com#!$ ,ith 299

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DETNORSKEVERITAS AS

Fi)& .9r+/a/ility distri/uti+n

The ru!es h"ve est"b!ished desi%n !o"ds corres#ondin% to the !o"ds im#osed b$ the se" "nd the cont"inment ofc"r%o+ b"!!"st "nd bun&ers) The desi%n !o"ds "re "##!ic"b!e in stren%th formu!"e "nd c"!cu!"tion methods ,here" s"tisf"ctor$ stren%th !eve! is re#resented b$ "!!o,"b!e stresses "nd or us"%e f"ctors)

"! The e!ements of the ru!e desi%n #rocedure "re sho,n in Fi%)J "nd further described in the fo!!o,in%)

- !! 8+adin) %+nditi+ns!" St"tic !o"ds "re derived from !o"din% conditions submitted b$ the bui!der or st"nd"rd conditions

#rescribed in the ru!es) The st"nd"rd conditions "re e@#ected to %ive suit"b!e f!e@ibi!it$ ,ith res#ect to the!o"din% of ordin"r$ shi# t$#es)

! Un!ess s#ecific"!!$ st"ted+ dr$ c"r%oes "re "ssumed to be %ener"! c"r%o or bu!& c"r%o 'co"!+ %r"in(sto,in% "t 9) t*m3) Li.uid c"r%oes "re "ssumed to h"ve densit$ e.u"! to or !ess th"n th"t of se","ter)

!6 Un!ess es#eci"!!$ st"ted to be other,ise+ or b$ virtue of the shi#-s c!"ss not"tion 'e)%) Cn%ine&C%&&ie&( or the "rr"n%ement of c"r%o com#"rtments+ the shi#-s c"r%o "nd b"!!"st conditions "re "ssumed to bes$mmetric "bout the centre!ine) For shi#s for ,hich uns$mmetric"! c"r%o or b"!!"st condition's( "re intended+the effect of this sh"!! be considered in the desi%n)

!# The determin"tion of d$n"mic !o"ds is b"sed on !on% term distribution of motions th"t the shi# ,i!!e@#erience durin% her o#er"tin% !ife) The o#er"tin% !ife is norm"!!$ t"&en "s

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DETNORSKEVERITAS AS

- 6!! Hull )irder stren)th

6!" A minimum stren%th st"nd"rd determined b$ the section modu!us "t bottom "nd dec& is re.uired for thehu!! %irder cross?section "midshi#s)

- #!! 8+%al /endin) and shear stren)th

#!" For #!"tin% e@#osed to !"ter"! #ressure the thic&ness re.uirement is %iven "s function of nomin"!

"!!o,"b!e bendin% stress "s fo!!o,sH

C f"ctor de#endin% on bound"r$ conditions of #!"te fie!d+ norm"!!$ t"&en "s 2B) for #"ne!s ,ith e.u"!!$s#"ced stiffeners)

&" correction f"ctor for "s#ect r"tio of #!"te fie!d

'2)2 8 9)

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6 is the e@#ected she"r force)

/ is the tot"! !o"d force on the member)

&s?v"!ues norm"!!$ to be "##!ied "re %iven se#"r"te!$ for e"ch of the !oc"! structures)

In T"b!e 42 &s?v"!ues "re %iven for some defined !o"d "nd bound"r$ conditions)

#!6 Direct stren%th formu!"e for %irders "re !imited to sim#!e %irders) The bound"r$ conditions "nd thenomin"! "!!o,"b!e stresses "re %iven in " simi!"r ,"$ "s for stiffeners)

For %irder s$stems the stress #"ttern is "ssumed to be derived b$ direct com#uterised c"!cu!"tions) A!!o,"b!estresses corres#ondin% to s#ecified #ressure combin"tions "nd indic"ted mode! fineness "re %iven for the mostcommon structur"! "rr"n%ements)

- .!! -u%;lin) stren)th

.!" Re.uirements for structur"! st"bi!it$ "re %iven to #revent buc&!in% or tri##in% of structur"! e!ements,hen subected to com#ressive stresses "nd she"r stresses)

The critic"! buc&!in% stress sh"!! be chec&ed for the v"rious stren%th members b"sed on %ener"! e!"stic buc&!in%

formu!"e+ corrected in the #!"stic r"n%e) For #!"te e!ements subect to e@treme !o"din% conditions+ com#ressivestresses "bove the e!"stic buc&!in% stren%th m"$ be "!!o,ed) For c"!cu!"tion of e!"stic "nd u!tim"te com#ressivestren%th+ see Sec)20)

- 4!! >mpa%t stren)th

4!" Shi#s desi%ned for " sm"!! dr"u%ht "t F)/) m"$ h"ve to be stren%thened to resist s!"mmin%) Re.uirements"re %iven for bottom structures for,"rd in " %ener"! form t"&in% v"rious structur"! "rr"n%ements into "ccount+see Sec)J 1

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DETNORSKEVERITAS AS

- :!! Fati)ue

:!" In %ener"! the susce#tibi!it$ of hu!! structures to f"ti%ue cr"c&in% h"s been t"&en c"re of b$ s#eci"!re.uirements to det"i! desi%n) 1o,ever in some c"ses e)%) ,here hi%h tensi!e stee! is "##!ied in stiffenin%members subected to hi%h fre.uenc$ f!uctu"tin% !o"ds+ " s#eci"! c"!cu!"tion ev"!u"tin% d$n"mic stresses+stress concentr"tion f"ctors "nd environment m"$ h"ve to be #erformed) For c"!cu!"tion of f"ti%ue stren%th+ seeSec)2J)

- 5!! 8+%al 2i/rati+ns

5!" Vibr"tions in the hu!! structur"! e!ements "re not considered in re!"tion to the re.uirements for sc"nt!in%s%iven in the ru!es) It is+ ho,ever+ "ssumed th"t s#eci"! investi%"tions "re m"de to "void h"rmfu! vibr"tions+c"usin% structur"! f"i!ures 'es#eci"!!$ in "fterbod$ "nd m"chiner$ s#"ce t"n& structures(+ m"!function ofm"chiner$ "nd instruments or "nno$"nce to cre, "nd #"ssen%ers)

- 7!! (is%ellane+us stren)th re'uirements

7!" Re.uirements for sc"nt!in%s of found"tions+ minimum #!"te thic&nesses "nd other re.uirements notre!"tin% re!ev"nt !o"d "nd stren%th #"r"meters m"$ ref!ect criteri" other th"n those indic"ted b$ these

#"r"meters) Such re.uirements m"$ h"ve been deve!o#ed from e@#erience or re#resent sim#!ific"tionsconsidered "##ro#ri"te b$ the Societ$)

- "!!! Relia/ility0/ased analysis +, hull stru%tures

"!!" This item %ives re.uirements for structur"! re!i"bi!it$ "n"!$sis undert"&en in order to document ru!ecom#!i"nce+ see /t)2 Ch)2 Sec)2 4J99)

"!! The method "nd #rocedures for ev"!u"tion of re!i"bi!it$ "re subect to the "cce#t"nce b$ the Societ$ ine"ch individu"! c"se) Acce#t"b!e #rocedures for re!i"bi!it$ "n"!$ses "re documented in the C!"ssific"tion Note

No) 09)J Structur"! Re!i"bi!it$ An"!$sis of 7"rine Structures)

"!!6 Re!i"bi!it$ "n"!$ses sh"!! be b"sed on !eve! III re!i"bi!it$ methods) These "re methods th"t uti!ise#rob"bi!it$ of f"i!ure "s " me"sure+ "nd ,hich therefore re.uire " &no,!ed%e of the distribution of "!! uncert"in#"r"meters)

"!!# For the #ur#ose of these ru!es+ !eve! III re!i"bi!it$ methods "re m"in!$ considered "##!ic"b!e toH

G uni.ue desi%n so!utions

G nove! desi%ns ,here !imited 'or no( e@#erience e@istsG s#eci"! c"se desi%n #rob!emsG c"!ibr"tion of !eve! I methods to "ccount for im#roved &no,!ed%e) 'Leve! I methods "re deterministic

"n"!$sis methods th"t use on!$ one ch"r"cteristic v"!ue to describe e"ch uncert"in v"ri"b!e+ i)e) the"!!o,"b!e stress method norm"!!$ "##!ied in the ru!es()

"!!. Re!i"bi!it$ "n"!$ses m"$ be u#d"ted b$ uti!is"tion of ne, inform"tion) 3here such u#d"tin% indic"testh"t the "ssum#tions u#on ,hich the ori%in"! "n"!$sis ,"s b"sed "re not v"!id+ "nd the resu!t of such non?v"!id"tion is deemed to be essenti"! to s"fet$+ the subect "##rov"! m"$ be revo&ed)

"!!4 T"r%et re!i"bi!ities sh"!! be commensur"te ,ith the conse.uence of f"i!ure) The method of est"b!ishin%such t"r%et re!i"bi!ities+ "nd the v"!ues of the t"r%et re!i"bi!ities themse!ves+ sh"!! be "##roved b$ the Societ$in e"ch se#"r"te c"se) To the e@tent #ossib!e+ the minimum t"r%et re!i"bi!ities sh"!! be est"b!ished b"sed u#onc"!ibr"tion "%"inst ,e!! est"b!ished c"ses th"t "re &no,n to h"ve "de.u"te s"fet$)

3here ,e!! est"b!ished c"ses do not e@ist+ for e@"m#!e in the c"se of nove! "nd uni.ue desi%n so!utions+ theminimum t"r%et re!i"bi!it$ v"!ues sh"!! be b"sed u#on one 'or " combin"tion( of the fo!!o,in% consider"tionsH

G tr"nsfer"b!e t"r%et re!i"bi!ities from simi!"r+ e@istin% desi%n so!utionsG decision "n"!$sisG intern"tion"!!$ reco%nised codes "nd st"nd"rds)

For further det"i!s+ see C!"ssific"tion Note No) 09)J)

C& 8+%al desi)n

C "!! De,initi+n +, span ,+r sti,,eners and )irders

"!" The effective s#"n of " stiffener 'l( or %irder 'S( de#ends on the desi%n of the end connections in re!"tion

to "d"cent structures) Un!ess other,ise st"ted the s#"n #oints "t e"ch end of the member+ bet,een ,hich thes#"n is me"sured+ is in %ener"! to be determined "s sho,n in Fi%) "nd Fi%)) 3hen the "d"cent structure isineffective in su##ort of the br"c&et+ or ,hen the end br"c&et does not com#!$ ,ith re.uirements in this section"nd is fitted for stiffenin% of su##ortin% structures+ the s#"n #oint sh"!! be defined b$ the intersection of the !inedefined b$ the stiffener f"ce #!"te "nd the end su##ort structure)

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DETNORSKEVERITAS AS

Fi)& :Span p+ints

Sti,,eners Girders

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DETNORSKEVERITAS AS

C !! End %+nne%ti+ns +, sti,,eners

!" Norm"!!$ "!! t$#es of stiffeners '!on%itudin"!s+ be"ms+ fr"mes+ bu!&he"d stiffeners( sh"!! be connected "ttheir ends) In s#eci"! c"ses+ ho,ever+ sni#ed ends m"$ be "!!o,ed+ see

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DETNORSKEVERITAS AS

the br"c&et is reduced com#"red to the bendin% moment c"#"cit$ of the stiffener+ e)%) the u##er end br"c&et of vertic"!stiffeners)


Fi)& 5Sti,,ener end /ra%;ets

Fi)& 7O2erlap end /ra%;ets

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DETNORSKEVERITAS AS

!6 4r"c&et!ess end connections m"$ be "##!ied for !on%itudin"!s "nd other stiffeners runnin% continuous!$throu%h %irders ',eb fr"mes+ tr"nsverses+ strin%ers+ bu!&he"ds etc)(+ #rovided sufficient connection "re" is"rr"n%ed for)

For !on%itudin"!s+ see s#eci"! re.uirements in Sec)J "nd )

!# Stiffeners ,ith sni#ed ends m"$ be "!!o,ed ,here d$n"mic !o"ds "re sm"!! "nd ,here vibr"tion isconsidered to be of !itt!e im#ort"nce+ #rovided the thic&ness of #!"tin% su##orted b$ the stiffener is not !ess

th"nH

l stiffener s#"n in m

s stiffener s#"cin% in m

# #ressure on stiffener in &N*m2)

C 6!! End %+nne%ti+ns +, )irders

6!" Norm"!!$ ends of sin%!e %irders or connections bet,een %irders formin% rin% s$stems sh"!! be #rovided,ith br"c&ets) 4r"c&ets "re %ener"!!$ to be m"de ,ith " r"dius * be or ,e!! rounded "t their toes) The free ed%e

of the br"c&ets sh"!! be "rr"n%ed ,ith f!"n%e or ed%e stiffener) Sc"nt!in%s "nd det"i!s "re %iven be!o,)4r"c&et!ess connections m"$ be "##!ied #rovided "de.u"te su##ort of the "doinin% f"ce #!"tes is "rr"n%ed for)

6! The thic&ness of br"c&ets on %irders sh"!! not be !ess th"n th"t of the %irder ,eb #!"te)

F!"n%es on %irder br"c&ets "re norm"!!$ to h"ve " cross? section"! "re" not !ess th"nH

A lt 'cm

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DETNORSKEVERITAS AS

Fi)& "!

-ra%;etless

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DETNORSKEVERITAS AS

" dist"nce bet,een #oints of ero bendin% moments

S for sim#!$ su##orted %irders

9)J S for %irders fi@ed "t both ends

r number of #oint !o"ds)

#!6 For #!"te f!"n%es h"vin% corru%"tions #"r"!!e! to the %irder+ the effective ,idth is "s %iven in =9

C 'r J( 9)99 9)0 9)J 9)= 9)0 9) 9) 2)99C 'r B( 9)99 9)00 9)B 9)0 9)= 9) 9)< 9)0

C 'r =( 9)99 9)

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DETNORSKEVERITAS AS

Fi)& ""E,,e%ti2e 1idth +, %ur2ed ,a%e plates ,+r alternati2e /+undary %+nditi+ns

#!: The effective f!"n%e "re" of curved f"ce #!"tes su##orted b$ r"di"! br"c&ets or of c$!indric"!!on%itudin"!!$ stiffened she!!s is %iven b$H

&+ bf+ r+ tfis "s %iven in =9+ see "!so Fi%)2

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DETNORSKEVERITAS AS

Fi)& "6E,,e%ti2e 1e/ area in 1ay +, +penin)s

.!# 3here the %irder f!"n%e is not #er#endicu!"r to the considered cross section in the %irder+ the effective,eb "re" sh"!! be t"&en "sH

A3 9)92 hnt, 2)0 AFlsin

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DETNORSKEVERITAS AS

4! The s#"cin% of stiffeners on the ,eb #!"te is norm"!!$ not to e@ceedH

or

sv s#"cin% of stiffeners in m #er#endicu!"r to the %irder f!"n%e

sh s#"cin% of stiffeners in m #"r"!!e! to the %irder f!"n%e

t, ,eb thic&ness in mm

9 f 2N*mm2in %ener"! ,ithin

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DETNORSKEVERITAS AS

Tri##in% br"c&ets sh"!! be fitted "s re.uired in J9+ "nd "re further to be fitted ne"r the toe of br"c&et+ ne"rrounded corner of %irder fr"mes "nd in !ine ,ith "n$ cross ties) The tri##in% br"c&ets sh"!! be fitted in !ine ,ith!on%itudin"!s or stiffeners+ "nd sh"!! e@tend the ,ho!e hei%ht of the ,eb #!"te) The "rm !en%th of the br"c&ets"!on% the !on%itudin"!s or stiffeners+ sh"!! not be !ess th"n =9M of the de#th of the ,eb #!"te+ the de#th of the!on%itudin"! or stiffener deducted) The re.uirement m"$ be modified for dee# tr"nsverses)

4!7 Tri##in% br"c&ets on the centre %irder bet,een the bottom tr"nsverses "re "t the bottom to e@tend to thesecond bottom !on%itudin"! from the centre !ine)

On one side the br"c&et sh"!! h"ve the s"me de#th "s the centre %irder+ on the other side h"!f this de#th)

4"! 1"tch end be"ms su##ortin% h"tch side co"min%s "re "t !e"st to h"ve tri##in% br"c&ets !oc"ted in thecentre !ine)

4"" The moment of inerti" of stiffeners #er#endicu!"r to the %irder f!"n%e 'inc!udin% =99 mm #!"te f!"n%e(sh"!! not be !ess th"nH

IV 9)2 " svt,0 'cm=(

" "s %iven in T"b!e C=

sv "s %iven in J9N and J>S Standard

C ""!! C+ld ,+rmed platin)

""!" For im#ort"nt structur"! members+ e)%) corru%"ted bu!&he"ds "nd ho##er &nuc&!es+ the inside bendin%r"dius in co!d formed #!"tin% sh"!! not be !ess th"n =)B times the #!"te thic&ness for c"rbon?m"n%"nese stee!s

Ta/le C.a Chara%teristi% ,lan)e data ,+r D>N /ul/ pr+,iles see als+ Fi)&"5

h(mm!

%(mm!

tf(mm!

bf@

(mm!8fA tftw

(mm2!bw

(mm!hfc

(mm!

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-t. /h.* "ec. Design principles 2 -age 4)

DETNORSKEVERITAS AS

"nd < times the #!"te thic&ness for "ustenitic? "nd ferritic?"ustenitic 'du#!e@( st"in!ess stee!s+ corres#ondin% to29M "nd

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-t. /h.* "ec.+ Design loads 2 -age 4*

DETNORSKEVERITAS AS

SECT>ON # DES>GN 8OADS

A& General

A "!! >ntr+du%ti+n

"!" In this section formu!"e for ,"ve induced shi# motions "nd "cce!er"tions "s ,e!! "s !"ter"! #ressures "re%iven)

The %iven desi%n ,"ve coefficient is "!so " b"sic #"r"meter for the !on%itudin"! stren%th c"!cu!"tions)

"! The shi# motions "nd "cce!er"tions in 4 "re %iven "s e@treme v"!ues 'i)e) #rob"bi!it$ !eve! 29?()

"!6 Desi%n #ressures c"used b$ se"+ !i.uid c"r%oes+ dr$ c"r%oes+ b"!!"st "nd bun&ers "s %iven in C "re b"sedon e@treme conditions+ but "re modified to e.uiv"!ent v"!ues corres#ondin% to the stress !eve!s sti#u!"ted in theru!es) Norm"!!$ this invo!ves " reduction of the e@treme v"!ues %iven in 4 to " 29?=#rob"bi!it$ !eve!)

"!# Im#"ct #ressures c"used b$ the se" 's!"mmin%+ bo, im#"ct( "re not covered b$ this section) Desi%nv"!ues "re %iven in the sections de"!in% ,ith s#ecific structures)

A !! De,initi+ns

!" S$mbo!sH# desi%n #ressure in &N*m2

densit$ of !i.uid or sto,"%e r"te of dr$ c"r%o in t*m3)

! The !o"d #oint for ,hich the desi%n #ressure sh"!! be c"!cu!"ted is defined for v"rious stren%th members"s fo!!o,sH

"( For #!"tesH

mid#oint of horiont"!!$ stiffened #!"te fie!d)

1"!f of the stiffener s#"cin% "bove the !o,er su##ort of vertic"!!$ stiffened #!"te fie!d+ or "t !o,er ed%e of#!"te ,hen the thic&ness is ch"n%ed ,ithin the #!"te fie!d)

b( For stiffenersH

mid#oint of s#"n)3hen the #ressure is not v"ried !ine"r!$ over the s#"n the desi%n #ressure sh"!! be t"&en "s the %re"ter ofH

#m+ #""nd #b"re c"!cu!"ted #ressure "t the mid#oint "nd "t e"ch end res#ective!$)

c( For %irdersH

mid#oint of !o"d "re")

-& Ship m+ti+ns and a%%elerati+ns

- "!! General"!" Acce!er"tions in the shi#-s vertic"!+ tr"nsverse "nd !on%itudin"! "@es "re in %ener"! obt"ined b$ "ssumin%the corres#ondin% !ine"r "cce!er"tion "nd re!ev"nt com#onents of "n%u!"r "cce!er"tions "s inde#endentv"ri"b!es) The combined "cce!er"tion in e"ch direction m"$ be t"&en "sH

n number of inde#endent v"ri"b!es)

Tr"nsverse or !on%itudin"! com#onent of "n%u!"r "cce!er"tion considered in the "bove e@#ression sh"!! inc!udethe com#onent of %r"vit$ "ctin% simu!t"neous!$ in the s"me direction)

"! The combined effects %iven in the fo!!o,in% m"$ devi"te from the "bove %ener"! e@#ression due to#r"ctic"! sim#!ific"tions "##!ic"b!e to hu!! structur"! desi%n or b"sed on e@#erience re%"rdin% #h"sin% bet,eencert"in b"sic com#onents)

#m "nd#" #b

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