FINAL CLAUSES
Regulation 9 Form of certificate
The Internationa l Oi l Pollutio n Preventio n Certificat e shal l b e draw n u p i n th e for m correspondin g t o th e model give n i n appendi x I I t o thi s Anne x an d shal l b e i n a t leas t English , Frenc h o r Spanish . I f a n officia l language of the issuin g country i s also used , thi s shal l prevai l i n cas e of a dispute or discrepancy.
Regulation 10
Duration and validity of certificate SEE INTERPRETATION 15
1 A n Internationa l Oi l Pollutio n Preventio n Certificat e shall b e issue d for a period specifie d b y the Admin- istration, whic h shal l no t exceed five years.
2.1 Notwithstandin g the requirements of paragraph 1 o f this regulation, when the renewal survey is completed within thre e month s befor e th e expir y dat e o f the existin g certificate , th e ne w certificat e shal l b e vali d fro m the dat e of completion o f the renewa l surve y to a dat e no t exceeding five year s from th e dat e o f expiry o f the existing certificate .
SEE INTERPRETATION 14
2.2 Whe n the renewa l surve y i s completed after the expiry date of the existing certificate, th e ne w certificate shall b e valid fro m th e dat e o f completion o f the renewa l surve y t o a dat e no t exceeding fiv e years fro m th e date o f expiry o f the existin g certificate .
2.3 Whe n th e renewa l surve y i s complete d mor e tha n thre e month s befor e th e expir y dat e o f the existin g certificate, th e ne w certificat e shal l b e vali d fro m th e dat e o f completion o f the renewa l surve y t o a dat e no t exceeding five years from th e dat e o f completion o f the renewa l survey .
3 I f a certificat e i s issue d fo r a perio d o f les s tha n fiv e years , th e Administratio n ma y exten d th e validit y of the certificat e beyon d th e expir y dat e t o th e maximu m perio d specifie d i n paragrap h 1 o f this regulation , provided that the survey s referre d t o i n regulation s 6.1. 3 an d 6.1. 4 o f this Annex applicabl e when a certificate is issue d for a perio d o f five years are carrie d ou t as appropriate .
4 I f a renewa l surve y ha s bee n complete d an d a ne w certificat e canno t b e issue d o r place d o n boar d th e ship befor e the expiry date of the existing certificate, th e perso n o r organization authorize d b y the Administra- tion ma y endorse the existing certificat e an d suc h a certificat e shal l b e accepte d a s valid fo r a furthe r perio d which shal l no t exceed fiv e month s from th e expir y date .
5 I f a ship at the time when a certificate expires is not in a port in which i t is to be surveyed, the Administra- tion ma y extend th e perio d o f validity o f the certificate bu t this extensio n shal l b e granted onl y for the purpos e of allowing th e shi p t o complet e it s voyag e t o th e por t i n whic h i t i s t o b e surveyed , an d the n onl y i n case s where i t appear s prope r an d reasonabl e t o d o so . N o certificat e shal l b e extende d fo r a perio d longe r tha n three months , an d a shi p to which a n extensio n i s grante d shal l not , o n it s arriva l i n th e por t i n whic h i t i s to be surveyed, b e entitled b y virtue of such extensio n t o leav e that port without having a ne w certificate. Whe n the renewa l surve y i s completed , th e ne w certificate shall b e vali d t o a date no t exceeding five years from th e date o f expiry o f the existin g certificate befor e the extensio n wa s granted .
6 A certificate issue d to a ship engaged on shor t voyages which ha s no t been extended unde r the foregoing provisions o f this regulatio n ma y b e extended b y the Administratio n fo r a perio d o f grace of up to one mont h from th e dat e o f expiry state d o n it . Whe n th e renewa l surve y i s completed , th e ne w certificat e shal l b e valid to a dat e no t exceedin g fiv e year s fro m th e dat e o f expiry o f the existin g certificat e befor e the extensio n wa s granted.
7 I n specia l circumstances , a s determined b y the Administration, a ne w certificate need no t be dated from the dat e o f expiry o f the existin g certificat e a s require d b y paragraph s 2.2 , 5 o r 6 o f this regulation . I n thes e special circumstances , th e ne w certificat e shal l b e vali d t o a dat e no t exceedin g fiv e year s fro m th e dat e o f completion o f the renewa l survey .
8 I f a n annua l o r intermediat e surve y i s complete d befor e th e perio d specifie d i n regulatio n 6 o f thi s Annex, then :
.1 th e anniversar y dat e show n o n th e certificat e shal l b e amende d b y endorsemen t to a dat e whic h shall no t b e mor e than thre e month s late r than th e dat e on whic h th e surve y wa s completed ; .2 th e subsequen t annua l o r intermediat e surve y require d b y regulatio n 6. 1 o f thi s Anne x shal l b e
completed a t the interval s prescribe d b y tha t regulatio n usin g the ne w anniversar y date ; an d .3 th e expir y dat e ma y remai n unchange d provide d on e o r mor e annua l o r intermediat e surveys , a s
appropriate, ar e carrie d ou t s o tha t th e maximu m interval s betwee n th e survey s prescribe d b y regulation 6. 1 o f this Anne x ar e no t exceeded.
9 A certificat e issue d unde r regulatio n 7 o r 8 o f this Anne x shal l ceas e t o b e vali d i n an y o f the followin g cases:
.1 i f the relevan t survey s ar e no t completed withi n th e period s specifie d unde r regulatio n 6. 1 o f this Annex;
.2 i f the certificat e i s no t endorsed i n accordanc e with regulatio n 6.1. 3 o r 6.1. 4 o f this Annex ; o r
Regulation 11
.3 upo n transfe r o f the shi p t o th e fla g o f anothe r State . A ne w certificat e shal l onl y b e issue d whe n the Governmen t issuin g th e ne w certificat e i s full y satisfie d tha t th e shi p i s i n complianc e wit h the requirement s o f regulation s 6.4. 1 an d 6.4. 2 o f thi s Annex . I n th e cas e o f a transfe r betwee n Parties, i f requeste d withi n thre e month s afte r the transfe r ha s take n place , th e Governmen t of the Party whos e fla g th e shi p wa s formerl y entitle d t o fl y shall , a s soo n a s possible , transmi t t o th e Administration copie s o f th e certificat e carrie d b y th e shi p befor e th e transfe r and , i f available , copies o f the relevan t surve y reports .
Regulation 11
Port State control on operational requirements*
1 A shi p whe n i n a por t o r a n offshor e termina l o f anothe r Part y i s subjec t t o inspectio n b y officer s duly authorize d b y suc h Part y concernin g operationa l requirement s unde r thi s Annex , wher e ther e ar e clea r grounds fo r believin g tha t the maste r o r cre w ar e no t familia r wit h essentia l shipboar d procedure s relatin g t o the preventio n o f pollution b y oil .
2 I n the circumstances given i n paragraph 1 o f this regulation, the Party shall take such steps as will ensure that th e shi p shal l no t sai l unti l th e situatio n ha s bee n brough t to orde r i n accordanc e wit h th e requirement s of this Annex .
3 Procedure s relatin g to the por t State control prescribe d i n articl e 5 o f the present Convention shal l appl y to this regulation .
4 Nothin g i n thi s regulatio n shal l b e construe d t o limi t th e right s an d obligation s o f a Part y carryin g ou t control ove r operational requirement s specificall y provide d fo r i n th e presen t Convention.
* Refe r t o th e Procedure s fo r por t Stat e control , adopte d b y th e Organizatio n b y resolutio n A.787(19) , a s amende d b y resolu - tion A.882(21); see IMO publication, sales number IA650E.
Part A - Construction
Regulation 12
Tanks for oil residues (sludge)
1 Ever y ship of 400 gross tonnage and above shall be provided with a tank or tanks of adequate capacity, having regard to the type of machinery and length of voyage, to receive the oil residues (sludge) which cannot be dealt with otherwise in accordance with the requirements of this Annex.
2 Oi l residu e (sludge) ma y be disposed of directly from the oil residu e (sludge) tank(s) through the standard discharge connectio n referre d t o i n regulatio n 13 , o r an y othe r approve d mean s o f disposal . Th e oi l residu e (sludge) tank(s) :
.1 shal l b e provided with a designated pum p for disposal that is capable of taking suction from the oil residue (sludge ) tank(s) ; an d
.2 shal l hav e n o discharg e connection s t o th e bilg e system , oil y bilg e wate r holdin g tank(s) , tan k to p or oil y wate r separator s excep t tha t the tank(s ) ma y b e fitte d wit h drains , wit h manuall y operate d self-closing valve s an d arrangement s fo r subsequen t visua l monitorin g o f th e settle d water , tha t lead t o a n oil y bilg e water holdin g tank or bilg e well , o r a n alternativ e arrangement , provide d suc h arrangement does no t connect directly t o th e bilg e pipin g system .
4 I n ship s delivere d afte r 3 1 Decembe r 1979 , a s define d i n regulatio n 1.28.2 , tank s fo r oil residue s shal l be designe d an d constructe d s o a s to facilitate their cleaning and th e discharg e o f residue s to receptio n facili - ties. Ship s delivere d o n o r befor e 3 1 Decembe r 1979 , a s define d i n regulatio n 1.28.1 , shal l compl y wit h thi s requirement as far as i s reasonabl e and practicable .
Regulation 12A
Oil fuel tank protection
1 Thi s regulatio n shal l appl y to all ship s with a n aggregat e oil fue l capacit y of 600 m3 an d abov e which ar e delivered on o r after 1 Augus t 2010, a s defined i n regulatio n 1.28. 9 o f this Annex.
2 Th e applicatio n o f thi s regulatio n i n determinin g th e locatio n o f tank s use d t o carr y oi l fue l doe s no t govern ove r th e provision s o f regulation 1 9 o f this Annex .
* MEP C 5 8 decide d (MEP C 58/23 , paragrap h 6.10 ) that, wit h regar d to conversions from singl e hul l oi l tanker s to bulk/ore carriers , regulation 12 A should be applied to the entire bulk/ore carrier, i.e. , al l new and existing fuel oil tanks.
SEE INTERPRETATION 18 SEE INTERPRETATION 17
SEE INTERPRETATION 19
3 Pipin g to and from oi l residu e (sludge) tanks shall hav e n o direct connection overboard, othe r than the standard discharge connection referred to in regulatio n 13 .
SEE INTERPRETATION 16
Regulation 12 A
3 Fo r the purpos e o f this regulation , th e following definition s shal l apply :
.1 Oil fuel mean s an y oi l use d a s fue l oi l i n connectio n wit h th e propulsio n an d auxiliar y machiner y of the shi p i n whic h suc h oi l i s carried .
.2 Load line draught (ds) i s th e vertica l distance , i n metres , fro m th e moulde d baselin e a t mid-lengt h to the waterline correspondin g to the summe r freeboard draugh t to b e assigne d t o the ship . .3 Light ship draught i s th e moulde d draugh t amidship s correspondin g t o th e lightweight .
.4 Partial load line draught (dP) i s th e ligh t shi p draugh t plu s 60 % o f the differenc e betwee n th e ligh t ship draugh t and th e loa d lin e draugh t (ds). The partia l loa d lin e draugh t (dp ) shal l b e measure d i n metres.
.5 Waterline (dB) i s th e vertica l distance , i n metres , fro m th e moulde d baselin e a t mid-lengt h t o th e waterline correspondin g to 30 % o f the dept h Ds.
.6 Breadth (Bs) i s th e greates t moulde d breadt h o f the ship , i n metres , a t o r belo w th e deepes t loa d line draugh t ds.
.7 Breadth (BB) i s th e greatest moulde d breadt h o f the ship , i n metres , a t or belo w the waterlin e dB. .8 Depth (Ds) i s th e moulde d depth , i n metres , measure d a t mid-lengt h t o th e uppe r dec k a t side .
For th e purpos e o f th e application , "uppe r deck " mean s th e highes t dec k t o whic h th e watertigh t transverse bulkhead s excep t af t pea k bulkhead s extend .
.9 Length (L) mean s 96 % o f th e tota l lengt h o n a waterlin e a t 85 % o f th e leas t moulde d dept h measured fro m th e to p o f th e keel , o r th e lengt h fro m th e foresid e o f the ste m t o th e axi s o f the rudder stock on tha t waterline, i f that be greater. I n ship s designe d wit h a rak e of keel th e waterline on whic h thi s lengt h i s measure d shal l b e parallel t o the designed waterline. Th e lengt h (L) shall b e measured i n metres .
.10 Breadth (B) mean s th e maximu m breadt h o f th e ship , i n metres , measure d amidship s t o th e moulded lin e of the frame i n a shi p with a meta l shel l an d to the outer surface of the hul l i n a ship with a shel l o f any othe r material .
.11 Oil fuel tank mean s a tan k i n whic h oi l fue l i s carried , bu t exclude s thos e tank s whic h woul d no t contain oi l fue l i n norma l operation , suc h a s overflo w tanks.
.12 Small oil fuel tank i s a n oi l fue l tan k wit h a maximu m individua l capacit y no t greater than 3 0 m3. .13 C i s the ship' s total volum e of oil fuel , includin g that of the smal l oi l fue l tanks , i n cubi c metres , a t
98% tan k filling.
.14 Oil fuel capacity mean s th e volum e o f a tan k i n cubi c metres , a t 98 % filling .
4 Th e provision s o f this regulatio n shal l appl y t o al l oi l fue l tank s excep t smal l oi l fue l tanks , a s define d in 3.12 , provide d that the aggregat e capacity of such exclude d tank s i s no t greater than 60 0 m3.
5 Individua l oi l fue l tank s shal l no t hav e a capacit y o f over 2,500 m3.
6 Fo r ships , othe r tha n self-elevatin g drillin g units , havin g a n aggregat e oi l fue l capacit y o f 60 0 m3 an d above, oi l fue l tank s shal l b e locate d abov e th e moulde d lin e o f the botto m shel l platin g nowher e les s tha n the distance h a s specifie d below :
(m) o r
h = 2. 0 m , whicheve r i s the lesser . The minimu m valu e o f h = 0.7 6 m .
In th e tur n o f th e bilg e are a an d a t location s withou t a clearl y define d tur n o f th e bilge , th e oi l fue l tan k boundary lin e shall ru n paralle l t o the lin e of the midshi p flat bottom a s show n i n figur e 1 .
Figure 1 - Oil fuel tank boundary lines
7 Fo r ships havin g a n aggregat e oi l fue l capacit y o f 600 m3 o r mor e bu t les s tha n 5,00 0 m3, oi l fue l tank s shall b e locate d inboar d o f the moulde d lin e of the side shell plating , nowher e les s than th e distance w which, as shown i n figur e 2, i s measure d a t any cross-section a t right angles to the side shell, a s specified below :
The minimu m valu e of w = 1. 0 m ; however , fo r individua l tank s with a n oi l fue l capacit y of less than 50 0 m3 the minimu m valu e i s 0.7 6 m .
8 Fo r ship s havin g a n aggregat e oi l fue l capacit y o f 5,00 0 m3 an d over , oi l fue l tank s shal l b e locate d inboard o f the moulde d lin e o f the sid e shel l plating , nowher e les s tha n th e distanc e w which, a s show n i n figure 2, i s measure d a t any cross-sectio n a t righ t angles to the side shell , a s specifie d below :
w = 2. 0 m , whicheve r i s th e lesser . The minimu m valu e o f w = 1. 0 m .
Figure 2 - Oil fuel tank boundary lines
9 Line s o f oi l fue l pipin g locate d a t a distanc e fro m th e ship' s botto m o f les s tha n h, a s define d i n paragraph 6 , o r from th e ship' s sid e les s tha n w, a s define d i n paragraph s 7 an d 8 , shal l b e fitted wit h valve s or simila r closin g device s withi n o r immediatel y adjacen t t o th e oi l fue l tank . Thes e valve s shal l b e capabl e of bein g brough t int o operatio n fro m a readil y accessibl e enclose d spac e th e locatio n o f which i s accessibl e from th e navigatio n bridg e or propulsio n machiner y contro l positio n withou t traversing exposed freeboar d o r superstructure decks . Th e valves shal l clos e i n cas e of remote contro l syste m failur e (fai l i n a closed position ) and shal l b e kep t close d a t se a a t an y time whe n th e tan k contain s oi l fue l excep t that they ma y b e opene d during oi l fue l transfe r operations .
10 Suctio n well s i n oi l fue l tank s ma y protrude int o the double bottom belo w the boundary lin e defined b y the distance h provide d tha t such well s are as smal l a s practicable and the distance between th e well botto m and the bottom shel l platin g i s no t les s than 0.5/7 .
Regulation 12 A
11 Alternativel y to paragraph s 6 an d eithe r 7 o r 8 , ship s shal l compl y wit h th e accidenta l oi l fue l outflo w performance standar d specifie d below :
.1 Th e leve l o f protectio n agains t oi l fue l pollutio n i n th e even t o f collisio n o r groundin g shal l b e assessed o n th e basi s o f the mea n oi l outflo w paramete r a s follows :
OM =< 0.0157 - 1.14E - 6 C fo r 60 0 m3 =< C < 5,00 0 m3
OM=< 0.01 0 fo r C > 5,00 0 m 3
where:
OM = mea n oi l outflo w parameter ; C = tota l oi l fue l volume .
.2 Th e following general assumptio n shal l appl y when calculatin g the mea n oi l outflo w parameter : .2.1 th e ship shal l b e assumed loade d to the partia l loa d lin e draught (dP) withou t trim o r heel ; .2.2 al l oi l fue l tank s shal l b e assume d loade d t o 98 % o f their volumetric capacity ;
.2.3 th e nomina l densit y o f the oi l fue l (pn) shal l generall y b e taken a s 1,00 0 kg/m3. I f the densit y of the oil fue l i s specificall y restricte d to a lesse r value, th e lesse r value ma y b e applied; an d .2.4 fo r th e purpos e o f these outflo w calculations , th e permeabilit y o f each oi l fue l tan k shal l b e
taken a s 0.99, unles s proven otherwise .
.3 Th e following assumptions shal l b e use d when combinin g the oil outflo w parameters :
.3.1 Th e mea n oi l outflo w shal l b e calculate d independentl y fo r sid e damag e an d fo r botto m damage an d the n combine d int o a non-dimensiona l oi l outflo w paramete r OM , as follows :
where:
OM S = mea n outflo w for side damage , i n m3 OM B = mea n outflo w for botto m damage , i n m3
C = tota l oi l fue l volume .
.3.2 Fo r botto m damage , independen t calculation s fo r mea n outflo w shal l b e don e fo r 0 m an d 2.5 m tide conditions, an d then combine d a s follows:
O M B = 0.7O MB(0! + 0.3OMB(2.5)
where:
OMB(0) = mea n outflo w for 0 m tid e condition, an d
OMB(2.5) = mea n outflo w fo r minu s 2. 5 m tid e condition , i n m 3.
.4 Th e mea n outflo w for side damage OM S shall b e calculated a s follows:
where:
i = eac h oi l fue l tan k unde r consideration ; n = tota l numbe r of oil fue l tanks ;
PS(i) = th e probabilit y o f penetratin g oi l fue l tan k i fro m sid e damage , calculate d i n accord - ance wit h paragrap h 11. 6 o f this regulation ;
Os(i) = th e outflow, i n m3, fro m sid e damage to oil fue l tan k i, which i s assumed equal t o the total volum e i n oi l fue l tan k i at 98% filling .
.5 Th e mea n outflo w for bottom damag e shal l b e calculated fo r each tida l conditio n a s follows:
.5.1
where:
i = eac h oi l fue l tan k unde r consideration ; n = tota l numbe r of oil fue l tanks ;
PB(i) = th e probabilit y o f penetratin g oi l fue l tan k i fro m botto m damage , calculate d i n accordance with paragrap h 11. 7 o f this regulation ;
0B ( i ) = th e outflow from oi l fue l tan k i, in m3, calculate d i n accordanc e with paragrap h 11.5.3 o f this regulation ; an d
CD B ( i )= facto r to accoun t for oil captur e as defined i n paragrap h 11.5.4 . .5.2
where:
i, n, PB(i) an d CDB(i) = a s defined i n subparagrap h .5. 1 abov e
0B ( i ) = th e outflow from oi l fue l tan k i , i n m3, afte r tidal change .
.5.3 Th e oi l outflo w 0B ( i ) fo r eac h oi l fue l tan k shal l b e calculate d base d o n pressur e balanc e principles, i n accordanc e with th e following assumptions:
.5.3.1 Th e ship shall be assumed stranded with zero trim and heel, with the stranded draught prior to tida l chang e equa l t o th e partia l loa d lin e draugh t dP
.5.3.2 Th e oil fue l leve l afte r damage shall b e calculated a s follows:
where:
hF= th e heigh t of the oi l fue l surfac e abov e Z1, in metres ;
tc = th e tidal change , i n metres . Reduction s i n tid e shall b e expressed a s negativ e values;
Z\ = th e heigh t o f th e lowes t poin t i n th e oi l fue l tan k abov e th e baseline , i n metres;
ps= densit y o f seawater, t o b e taken a s 1,02 5 kg/m3; an d pn= nomina l densit y of the oil fuel , a s define d i n 11.2.3 .
.5.3.3 Th e oil outflo w 0B ( i ) for any tank bounding the bottom shel l platin g shall b e taken no t less than th e following formula, bu t no mor e than th e tank capacity:
OB(I) = HW .A
where:
Hw = 1. 0 m , whe n YB = 0
but not greater than 0.4 m, when YB is greater than BB/5 or 11.5 m , which- ever i s les s
Hw i s t o b e measure d upward s fro m th e midshi p fla t botto m line . I n th e tur n o f the bilge are a an d a t location s withou t a clearl y define d tur n o f th e bilge , Hw i s t o b e measured fro m a lin e paralle l t o the midshi p fla t bottom , a s show n fo r distanc e h i n figure 1.
For YB values outboard o r 11.5 m , whichever is less, Hw is to be linearly interpolated.
YB = th e minimu m valu e o f YB ove r th e lengt h o f th e oi l fue l tank , wher e a t an y given location , YB i s the transverse distanc e betwee n th e sid e shel l a t water- line dB an d th e tan k a t or belo w waterlin e dB.
A = th e maximu m horizonta l projecte d are a of the oil fue l tan k u p to the leve l o f Hw fro m th e botto m o f th e tank .
Regulation 12 A
(measured inboar d from the ship's side at right angles to the centreline at the level of dD)
Figure 3 - Dimensions for calculation of the minimum oil outflow
.5.4 I n the case of bottom damage, a portion from the outflow from an oil fuel tank may be captured by non-oi l compartments . Thi s effec t i s approximate d b y applicatio n o f th e facto r CDB(i) fo r each tank, whic h shal l b e taken a s follows:
= 0. 6 fo r oi l fue l tank s bounde d fro m belo w b y non-oi l compartments ;
= 1 otherwise .
.6 Th e probabilit y Ps o f breaching a compartmen t from sid e damag e shal l b e calculate d a s follows : .6.1
where:
probability th e damag e wil l exten d int o th e longitudina l zon e bounded b y Xa and Xf;
probability th e damag e wil l exten d int o th e vertica l zon e bounded b y ZI an d Zu;
probability th e damag e wil l exten d transversel y beyon d th e boundary define d b y y ;
.6.2 and PS1 shall b e determined b y linea r interpolatio n from th e tables o f probabilities for sid e damag e provide d i n 11.6.3 , an d PSy shal l b e calculate d fro m th e formula s provide d in 11.6.3 , where :
= the probability the damage will li e entirely aft of location Xa / L ;
= the probability the damage will lie entirely forward of location X1f / L ;
= probabilit y th e damag e wil l li e entirel y belo w th e tank ;
= probabilit y th e damag e wil l li e entirel y abov e th e tank ; an d
= probabilit y th e damag e wil l li e entirel y outboar d th e tank . Compartment boundarie s Xa, Xf, Z1 Zu an d y shall b e develope d a s follows :
= th e longitudina l distanc e from af t terminal o f L to the aftmost point on th e compart- ment being considered, i n metres ;
= th e longitudina l distanc e fro m af t termina l o f L t o th e foremos t poin t o n th e compartment being considered, i n metres ;
= th e vertical distanc e from the moulded baselin e to the lowes t point on the compart- ment bein g considered , i n metres . Wher e ZI i s greate r tha n Ds, Z| shal l b e take n as Ds;
Zu = th e vertica l distanc e fro m th e moulde d baselin e t o th e highes t poin t o n th e compartment being considered, i n metres . Wher e Zu i s greater than Ds, Zu shall be taken a s Ds; an d
y = th e minimu m horizonta l distanc e measure d a t righ t angle s t o th e centrelin e between th e compartmen t unde r consideratio n an d th e sid e shell , i n metres. * In way of the turn o f the bilge, y need no t to be considered below a distance h abov e baseline, where h i s lesse r o f 3 m o r the to p o f the tank .
.6.3 Table s o f probabilitie s fo r sid e damag e
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
0.000 0.023 0.068 0.117 0.167 0.217 0.267 0.317 0.367 0.417 0.467 0.517 0.567 0.617 0.667 0.717 0.767 0.817 0.867 0.917 0.967
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
0.967 0.917 0.867 0.817 0.767 0.717 0.667 0.617 0.567 0.517 0.467 0.417 0.367 0.317 0.267 0.217 0.167 0.117 0.068 0.023 0.000
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
0.000 0.000 0.001 0.003 0.007 0.013 0.021 0.034 0.055 0.085 0.123 0.172 0.226 0.285 0.347 0.413 0.482 0.553 0.626 0.700 0.775
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
0.968 0.952 0.931 0.905 0.873 0.836 0.789 0.733 0.670 0.599 0.525 0.452 0.383 0.317 0.255 0.197 0.143 0.092 0.046 0.013 0.000
.7 Th e probability PB of breaching a compartment from bottom damage shall be calculated as follows:
.7.1
where:
= probabilit y the damage will extend int o the longitudinal zon e bounded by
*' For symmetrical tank arrangements, damages are considered for one ship only, in which case all "y" dimensions are to be measured from that side. Fo r asymmetrical arrangements, referenc e is made to the Explanatory Notes on matters related to the accidental oil outflow performance, adopted by the Organization by resolution MEPC.122(52), as amended.
Regulation 12 A
= probabilit y th e damag e wil l exten d int o transvers e zon e bounded b y Yp and Ys; and
= probabilit y th e damag e wil l exten d verticall y abov e th e boundar y defined b y z ;
.7.2 and PB5 shall b e determined b y linea r interpolatio n fro m the tables of probabilities tor bottom damage provided i n 11.7.3 , an d PBz shall b e calculated from the formulas provided in 11.7.3 , where :
= th e probabilit y th e damag e wil l li e entirel y af t o f locatio n
= th e probabilit y th e damag e wil l li e entirel y forwar d o f locatio n
= probabilit y th e damag e wil l li e entirel y t o por t o f the tank ;
= probabilit y the damag e wil l li e entirel y to starboar d o f the tank; an d
= probabilit y th e damag e wil l li e entirel y belo w th e tank . Compartment boundaries Xa, Xf ,Yp Vs and z shall b e develope d as follows:
and Xf as defined i n 11.6.2 ;
= th e transverse distanc e from th e port-most point on th e compartmen t locate d a t or below the waterline dB, to a vertical plan e located t o starboard of the ship's centreline;
Ys = th e transvers e distanc e fro m th e starboard-mos t poin t o n th e compartmen t located a t or below th e waterline dB, t o a vertica l plan e locate d t o starboar d of the ship' s centreline ; an d
z = th e minimu m valu e o f z ove r th e lengt h o f th e compartment , where , a t an y given longitudina l location , z i s the vertical distanc e from th e lowe r point of the bottom shel l a t that longitudina l locatio n t o th e lowe r point of the compartmen t at that longitudina l location .
.7.3 Table s o f probabilities fo r botto m damag e
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
0.969 0.953 0.936 0.916 0.894 0.870 0.842 0.810 0.775 0.734 0.687 0.630 0.563 0.489 0.413 0.333 0.252 0.170 0.089 0.026 0.000
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
0.000 0.009 0.032 0.063 0.097 0.133 0.171 0.211 0.253 0.297 0.344 0.394 0.444 0.494 0.544 0.594 0.644 0.694 0.744 0.794 0.844 0.00
0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
0.000 0.002 0.008 0.017 0.029 0.042 0.058 0.076 0.096 0.119 0.143 0.171 0.203 0.242 0.289 0.344 0.409 0.482 0.565 0.658 0.761
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
0.844 0.794 0.744 0.694 0.644 0.594 0.544 0.494 0.444 0.394 0.344 0.297 0.253 0.211 0.171 0.133 0.097 0.063 0.032 0.009 0.000