ABS Guide For Building & Classing Vessels For Navigation In Polar ...

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GUIDE FOR BUILDING AND CLASSING 

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MARCH 2008 (Updated ;uly 2008 – see next page) 

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>#"#" 8%-, S+$8-on "1,o -n$125+, #"-+5 ,+8 o> ,8#2$82#"1 #+;2-#+>+$8, o> 41o="1 "n5 1o$"1 -$+ 1o"5,, ", M+11 ", 8+o# 8%+ 02#0o,+ o> $"1$21"8-n4 

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iii

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GUIDE FOR BUILDING AND CLASSING 

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CONTENTS 

SECTION 1 Introduction ............................................................................1 

1 #$n$&'( ..................................................................................1 

1.1 A++(,-'.,on ........................................................................1 

1.0 1-$ B&$'3$& C('55..............................................................1 

0 6$5-&,+.,on o7 1-$ C('55 .........................................................1 

0.1 #8,9$ 7o& S$($-.,on o7 Po('& C('55$5.................................1 

< 6$7,n,.,on5 ..............................................................................= 

1K P('.$9 S.&8-.8&$5 .................................................................1K 

=1 Co&&o5,on[AZ&'5,on A99,.,on5 'n9 S.$$( N$n$@'(...............1K 

=0 M'.$&,'(5...............................................................................=P 

=< ?onE,.89,n'( S.&$nE.H...........................................................== 

=

ST5.$G 6$5,En.....................................................................=K 

I 

K 

TAB?C 1 6$5,En 1-$ TH,-3n$55 'n9 1-$ S.&$nE.H 1n9$\ ...........01 

TAB?C = ?o'9 C'5$5 7o& J+$n P&o+$(($& .................................0F 

TAB?C 0 ?o'9 C'5$5 7o& 68-.$9 P&o+$(($&...............................0I 

TAB?C F P'&'G$.$&5 % & 'n9 $ ' .................................................0I 

TAB?C < P&o+$(($& Bo(('&9 TH&85. .............................................0K 

TAB?C Y P&o+8(5,on SH'7. 6,'G$.$& M'-.o& ( 1 ..........................F= 

M1#UNC 1 

SH'+$ o7 .H$ P&o+$(($& 1-$ To&O8$ C\-,.'.,on 7o& 

F

Section 1: Introduction 

S C C T 1 J a 1 &n5:o3>?5@on 

1 .6n6:4A 

1.1 Application 

T%+ #+;2-#+o# Po1"# S%-0, "001K 8o *+,,+1, $on,8#2$8+5 o> ,8++1 "n5 -n8+n5+5 >o# n"*-4"8-on -n 

-$+--n>+,8+5 0o1"# M"8+#,, +S$+08 -$+ =#+"N+#, [,++ \-1-161.J o> 8%+ ABS )*+!, ./0 #*'+1'23 421 

%+4,,'23 56!!+ 7!,,!+, (56!!+ 7!,,!+ )*+!,)]. 

^+,,+1, 8%"8 $o+#+n8 Po1"# C1",,+,, 8%+n =o8% 8%+ %211 "n5 -$"8+. Co-$"8-on $+#8->-$"8+ o# "n "00+n5-S 8%+#+8o. 

1.3 Ice Breaker Class 

C+;2-#+ 8%-, :2-5+ 5o no8 $o*+# 8%+ #+;2-#+o# 8%+ $1",, no8"8-on, Ice Breaker. 

^+,,+1, 8%"8 "#+ 8o #+$+-*+ 8%+ Ice Breaker no8"8-on ,%o215 %"*+ "55-8-on"1 #+;2-#+ 8%+ `Mn+# 8o ,+1+$8 "n "00#o0#-"8+ Po1"# C1",,. T%+ 5+,$#-08-on, -n S+$8-on 1, 

T"=1+ 1 "#+ -n8+n5+5 8o 42-5+ oMn+#,, 5+,-4n+#, "n5 "5

Section 1 Introduction 

TABLE 1 

Polar Class Descriptions 

8/+40 %+4,, 9:! ;!,:0'

Section 2: Structural Requirements for Polar Class Vessels 

S C C T 1 J a F S5:>?5>:4A ,6G>@:6H6n57 Co: PoA4: 

CA477 !6776A7 

1 A22A@?45@on 

T%+,+ #+;2-#+1+$8-n4 8%+ 2#8%+# 5-*-5+5 -n 8%+ *+#8-$"1 5-#+$8-on -n8o 8%+ Bo88o 8%+ 1-n+ o> 8%+ ,8+< "n5 8%+ 

*+,,+1 =",+1-n+. 

S+$8-on ', U-42#+ 1 no8M-8%,8"n5-n4, 8%+ ">8 =o2n5"#K o> 8%+ BoM #+4-on n++5 no8 =+ 8 o> 8%+ >o#M"#5 0+#0+n5-$21"# (UP). 

DC T%+ =o2n5"#K =+8M++n 8%+ =o88o< "n5 1oM+# #+4-on, -, 8o =+ 8"N+n "8 8%+ 0o-n8 M%+#+ 8%+ ,%+11 

-, -n$1-n+5 W 5+4#++, >#o< %o#-Ton8"1. 

D'C ?> " *+,,+1 -, -n8+n5+5 8o o0+#"8+ ",8+#n -n -$+ #+4-on,, 8%+ ">8 ,+$8-on o> 8%+ *+,,+1 -, 8o =+ 

5+,-4n+5 2,-n4 8%+ BoM "n5 BoM ?n8+#

Section 2 Structural Requirements for Polar Class Vessels 

FIGURE 1 

Hull Area Extents 

7gT7XT `U eUZZ AC7AS 

Uo# PC1, 2, 3 i 4 E h 1._ "11 Po1"# C1",,+,, " 41"n$-n4 -o# 

5+8+#o# 

Po1"# C1",,+, PC6 "n5 PC7, 8%+ -$+ 1o"5 0"#"o# ,2=-#+4-on, o> 8%+ =oM "#+"j ,%"0+ $o+>>-$-+n8 (.4 ' ), 8o8"1 41"n$-n4 

--S+5 1o"5 0"8$% ",0+$8 #"8-o, I) h J.\. 

H+,-4n -$+ >o#$+, $"1$21"8+5 "$$o#5-n4 8o '6_.J "#+ on1K *"1-5 >o# *+,,+1, M-8% -$+=#+"N-n4 

>o#o#$+, >o# "nK o8%+# =oM >o# ,8oM+5 $"#4o "n5 +;2-0#o< ,%-06-$+ -n8+#"$8-on. T%+,+ -n+#8-"1 1o"5,, =",+5 

on "$$+1+#"8-on,, "#+ 8o =+ $on,-5+#+5 -n 8%+ 5+,-4n o> 8%+,+ ,8#2$82#+,. 

4 ABS "U$%& '() BU$+%$," A,% C+ASS$," 0&SS&+S $,T&,%&% '() ,A0$"AT$(, $, P(+A) 3AT&)S . 4556


5.3 Glancing Impact Load Characteristics 

T%+ 0"#"-n-n4 8%+ 41"n$-n4 -o2# ,2=-#+4-on, o> 

+;2"1 1+n48%. T%+ >o#$+ (G), 1-n+ 1o"5 (H), 0#+,,2#+ (8) "n5 1o"5 0"8$% ",0+$8 #"8-o (I)) "#+ 8o 

=+ $"1$21"8+5 M-8% #+,0+$8 8o 8%+ +"$% ,2=-#+4-on (+"$% 8%+ -$+ 1o"5 0"#"


&' h no##"#"#"#o< %o#-Ton8"1), 5+4#++, 

8"n(&) h 

8"n(&') h 

8"n($)68"n(() 

8"n(&) $o,($) 

#o< S+$8-on ', T"=1+ 1 

; h *+,,+1 5-,01"$+


o#$+ o> ,2=-#+4-on ', -n MX 

%G ; h Zo"5 P"8$% H-#o< S+$8-on ', T"=1+ 1 

I) ' h 1o"5 0"8$% ",0+$8 #"8-o o> ,2=-#+4-on ' 

5.7 Hull Areas Other Than the Bow 

?n 8%+ %211 "#+", o8%+# 8%"n 8%+ =oM, 8%+ >o#$+ (G A/2#/F ) "n5 1-n+ 1o"5 (H A/2#/F ) 2,+5 -n 8%+ 5+8+# ; + %G ;95 

h 

(.\f 

%G;95 

n (.1( (; – %G ;95 ) -> ; l %G ;95 

; h *+,,+1 5-,01"$+


o# *+,,+1, M-8% $1",, no8"8-on PC6 

"n5 PC7, 8%+ 5+,-4n 1o"5 0"8$% %", 5- M-58%, F #/F , "n5 %+-4%8, " #/F , 5+>-n+5 ", 

>o11oM,d 

'C F #/F h G #/F 6H #/F < 

''C " #/F h H #/F 68 #/F < 

M%+#+ 

G #/F h


o# 8%+ 0#+,,2#+ $on$+n8#"8-on on 1o$"1-T+5 ,8#2$82#"1


TABLE 3 

Hull Area Factors (AF) 

L*++ I0!4 I0!4 

8/+40 %+4,, 

PC1 PC2 PC3 PC4 PC5 PC6 PC7 

BoM (B) A11 B 1.(( 1.(( 1.(( 1.(( 1.(( 1.(( 1.(( 

BoM ?n8+# 

8%+ >#" 1on4-825-n"11K->#"#"


'DC ?n 8%+ $",+ o> o=1-;2+1K->#" 5+,-4n 1o"5 0"8$%, -n o# "nK >-88+5 +n5 =#"$N+8,, -n -88+5, 8%+ 1+n48% ! n++5 no8 =+ 8"N+n 1"#4+# 8%"n 

8%+ 5-,8"n$+ >#o< 8%+ ,8#-n4+# 8o 8%+

S#$%&'( 2 S%*+$%+*,- R#/+&*#0#(%1 2'* 3'-,* C-,11 5#11#-1 

$ &'()*+, - ./+/'(0 

986 

983 

98: 

98; 

989 

9866 

9863 

Framing members of Polar Class vessels are to be designed to withstand the ice loads defined in 

Subsection 2/5. 

The term “framing member” refers to transverse and longitudinal local frames, load-carrying stringers 

and web frames in the areas of the hull exposed to ice pressure, see Section 2, Figure 1. Where loaddistributing 

stringers have been fitted, the arrangement and scantlings of these are to be in accordance 

with the requirements of 6-1-1/15.9 of the Steel &essel Rules. 

The strength of a framing member is dependent upon the fixity that is provided at its supports. Fixity 

can be assumed where framing members are either continuous through the support or attached to a 

supporting section with a connection bracket. In other cases, simple support is to be assumed unless 

the connection can be demonstrated to provide significant rotational restraint. Fixity is to be ensured 

at the support of any framing which terminates within an ice-strengthened area. 

The details of framing member intersection with other framing members, including plated structures, 

as well as the details for securing the ends of framing members at supporting sections, are to be 

prepared and submitted for review. 

The design span of a framing member is to be determined on the basis of its moulded length. If 

brackets are fitted, the design span may be reduced provided the bracket is in accordance with 

3-2-9/Table 1 of the Steel &essel Rules and rigidity of the supporting member where the bracket being 

attached is adequate. Brackets are to be configured to ensure stability in the elastic and post-yield 

response regions. 

When calculating the section modulus and shear area of a framing member, net thicknesses of the 

web, flange (if fitted) and attached shell plating are to be used. The shear area of a framing member 

may include that material contained over the full depth of the member (i.e., web area including 

portion of flange, if fitted), but excluding attached shell plating. 

The actual net effective shear area, A + , of a framing member is given by: 

A + = , % t +n % sin - + /100 cm 2 

where 

, = height of stiffener, in mm, see Section 2, Figure 4 

t +n = net web thickness, in mm 

= t + – t c 

t + = as-built web thickness, in mm, see Section 2, Figure 4 

62 !"# GUIDE FOR BUILDING AND CLASSING VESSELS INTENDED FOR NAVIGATION IN POLAR WATERS . 2008

J J .: 


6 : h $o##o,-on 5+52$8-on, -n 1"n4+ 8%-$Nn+,, 

(=28 no8 1+,, 8%"n 6 , ", #+;2-#+5 =K '6'1._). 

- F h ,>+n+# M+=, 1"n4+ +S$++5, 8%+ $#o,,-,+$8-on"1 "#+" o> 8%+ 1o$"1 

>#">+$8-*+ 01",8-$ ,+$8-on 1o$"1 >#"1"n4+, -n $< ' 

J .: h %+-4%8 o> 1o$"1 >#"


b%+n 8%+ $#o,,-,+$8-on"1 "#+" o> 8%+ 1o$"1 >#"1"n4+, 8%+ 01",8-$ n+28#"1 "S-, -, 1o$"8+5 " 5-,8"n$+ O 24 "=o*+ 8%+ "88"$%+5 ,%+11 01"8+, 4-*+n =Kd 

O 24 h (1((I .2 n J F 6 F2 – 1((( 6 :67 4n3 

Bo55oH S5:>?5>:67 

11.1 

11.3 

T%+ 1o$"1 >#" ,%+"# "n5 =+n5-n4 5o no8 +S$++5 

8%+ 01",8-$ ,8#+n48% o> 8%+ +$8-*+ ,%+"# "#+" o> 8%+ >#" ,0"n, 8%+ 1+,,+# o> 4 "n5 ", -n < 

4 h >#"-n+5 -n '6Y.Y, -n < 

" h %+-4%8 o> 5+,-4n -$+ 1o"5 0"8$% "$$o#5-n4 8o '6_.Y.1--) o# '6_.Y.'--), -n < 

, h 8#"n,*+#,+ >#"#o< S+$8-on ', T"=1+ ' 

8 4D3 h "*+#"4+ 0#+,,2#+ M-8%-n 1o"5 0"8$% "$$o#5-n4 8o '6_.11.1, -n MP" 

, M h


T%+ I 1 0"#"o# >#" 8#"n,*+#,+ >#" 8#"n,*+#,+ >#"1"n4+ =#+"58%, -n 1"n4+, -n >+$8-*+ 01",8-$ ,+$8-on 8#"n,*+#,+ >#" 8%+ >#"


1B 

*:4H@nJ – S@36 $onJ@5>3@n4A7 ($onJ@5>3@n4AAO-C:4H63 

!6776A7) 

13.1 

S-5+ 1on4-825-n"1, "#+ 8o =+ 5- 8%+ +$8-*+ ,%+"# "#+" o> 8%+ >#" 5+,-4n -$+ 1o"5 0"8$% >#o< '6_.Y.1--) o# '6_.Y.'.--), -n < 

, h ,0"$-n4 o> 1on4-825-n"1 >#" "' o ' 

h ,, -n < -> "' * ' 

4 h 1on4-825-n"1 5+,-4n ,0"n ", 4-*+n -n '6Y.Y, -n < 

, M h +$8-*+ ,%+"# "#+" o> 1on4-825-n"1 ($"1$21"8+5 "$$o#5-n4 8o '6Y.1J), -n $< ' 

( F+ h 16(1 n ' % I .2 6I F ) M-8% I .2 ", 4-*+n -n '6Y.1_ 

IG, 88G , ,8 4D3 , " 1 , 4 "n5 , K "#+ ", 4-*+n -n '61J.J. 



13.7 

1E 

15.1 

15.3 

15.5 

1K 

17.1 

T%+ ,$"n81-n4, o> 8%+ 1on4-825-n"1, "#+ 8o ?5>:4A S54S@A@5O 

To 0#+*+n8 1o$"1 =2$N1-n4 -n 8%+ M+=, 8%+ #"8-o o> M+= %+-4%8 (J F ) 8o n+8 M+= 8%-$Nn+,, (6 F2 ) o> "nK 

>#" 

8%+ M+= ,8->>+n+#, "#+ 8o +n,2#+ 8%+ ,8#2$82#"1 ,8"=-1-8K o> 8%+ >#"


M%+#+ 

: 1 h J F – (.)J ,8#-n4+#6M+= >#"1"n4+ =2$N1-n4 o> M+15+5 0#o>-1+,, 8%+ >o11oM-n4 "#+ 8o =+ ,"8-,>-+5d 

'C T%+ >1"n4+ M-58%, " . , -n 1"n4+ o28,8"n5, " /*6 , -n >1"n4+, -n


1T 

19.1 

19.3 

19.5 

F1 

21.1 

21.3 

21.5 

PA4563 S5:>?5>:67 

P1"8+5 ,8#2$82#+, "#+ 8%o,+ ,8->>+n+5 01"8+ +1+d 

'C b+= %+-4%8 o> "5O"$+n8 0"#"11+1 M+= >#">+$8-*+ 0#o8+$8-on "4"-n,8 $o##o,-on "n5 -$+--n52$+5 "=#",-on -, #+$o"$+, o> 8%+ ,%+11 01"8-n4 >o# "11 Po1"# C1",, *+,,+1,. 

T%+ *"12+, o> $o##o,-on6"=#",-on "55-8-on,, 6 , , 8o =+ 2,+5 -n 5+8+# 6 , h 1.(


21.7 

Steel renewal for ice strengthened structures is required when the gauged thickness is less than 

t net 5 0.5 mm. 

23 Materials 

23.1 

23.3 

Plating materials for hull structures are to be not less than those given in Section 2, Tables 6 and 7 

based on the as-built thickness of the material, the Polar Ice Class notation assigned to the vessel and 

the Material Class of structural members given in Section 2, Table 5. 

Material classes specified in 3-1-2/Table 2 of the Steel Vessel Rules are applicable to Polar Class 

vessels regardless of the vesselJs length. In addition, material classes for weather and sea exposed 

structural members and for members attached to the weather and sea exposed shell plating of polar 

vessels are given in Section 2, Table 5. Where the material classes in Section 2, Table 5 and those in 

3-1-2/Table 2 of the Steel Vessel Rules differ, the higher material class is to be applied. 

TABLE 5 

Material Classes for Structural Members of Polar Class Vessels 

Structural Members 

Shell plating within the bow and bow intermediate icebelt hull areas (B, BI i ) 

All weather and sea exposed SECONDARY and PRIMARY, as defined in 3-1-2/Table 2 of the 

Steel Vessel Rules, structural members outside 0.4L amidships 

Plating materials for stem and stern frames, rudder horn, rudder, propeller nozzle, shaft 

brackets, ice skeg, ice knife and other appendages subject to ice impact loads 

All inboard framing members attached to the weather and sea-exposed plating including any 

contiguous inboard member within 600 mm of the shell plating 

Weather-exposed plating and attached framing in cargo holds of vessels which by nature of 

their trade have their cargo hold hatches open during cold weather operations 

All weather and sea exposed SPECIAL, as defined in 3-1-2/Table 2 of the Steel Vessel Rules, 

structural members within 0.2L from FP 

Material Class 

II 

I 

II 

I 

I 

II 

23.5 

Steel grades for all plating and attached framing of hull structures and appendages situated below the 

level of 0.3 m below the lower waterline, as shown in Section 2, Figure 6, are to be obtained from 

3-1-2/Table 1 of the Steel Vessel Rules based on the Material Class for Structural Members in Section 2, 

Table 5 above, regardless of Polar Class. 

20 ABS GUIDE FOR BUILDING AND CLASSING 0ESSELS INTENDED FOR NA0IGATION IN 2OLAR 3ATERS . 2006


FIGURE 6 

Steel Grade Requirements for Submerged 

and Weather Exposed Shell Plating 

S8++1 :#"5+, A$$o#5-n4 8o '6'J.W 

ZoM+# -$+ bZ 

S8++1 :#"5+, A$$o#5-n4 8o '6'J._ 

(.J < 

23.7 

S8++1 4#"5+, >o# "11 M+"8%+# +S0o,+5 01"8-n4 o> %211 ,8#2$82#+, "n5 "00+n5"4+, ,-82"8+5 "=o*+ 8%+ 1+*+1 

o> (.J < =+1oM 8%+ 1oM+# -$+ M"8+#1-n+, ", ,%oMn -n S+$8-on ', U-42#+ \, "#+ 8o =+ no8 1+,, 8%"n 4-*+n 

-n S+$8-on ', T"=1+ \. 

TABLE 6 

Steel Grades for Weather Exposed Plating 

A/6!,K 

UJ':(2!,,S 6 

BB 

?46!0'4+ %+4,, 9 ?46!0'4+ %+4,, 99 ?46!0'4+ %+4,, 999 

PC1-5 PC6 ` 7 PC1-5 PC6 ` 7 PC1-3 PC4 ` 5 PC6 ` 7 

MS eT MS eT MS eT MS eT MS eT MS eT MS eT 

6 + 1( B Ae B Ae B Ae B Ae 7 7e 7 7e B Ae 

1( o 6 + 1_ B Ae B Ae H He B Ae 7 7e 7 7e H He 

1_ o 6 + '( H He B Ae H He B Ae 7 7e 7 7e H He 

'( o 6 + '_ H He B Ae H He B Ae 7 7e 7 7e H He 

'_ o 6 + J( H He B Ae 7 7e' H He 7 7e 7 7e 7 7e 

J( o 6 + J_ H He B Ae 7 7e H He 7 7e 7 7e 7 7e 

J_ o 6 + f( H He H He 7 7e H He U Ue 7 7e 7 7e 

f( o 6 + f_ 7 7e H He 7 7e H He U Ue 7 7e 7 7e 

f_ o 6 + _( 7 7e H He 7 7e H He U Ue U Ue 7 7e 

1 ?n$125+, M+"8%+#-+S0o,+5 01"8-n4 o> %211 ,8#2$82#+, "n5 "00+n5"4+,, ", M+11 ", 8%+-# o28=o"#5 >#"#"


TABLE 7 

Steel Grades for Inboard Framing Members 

Attached to Weather Exposed Plating 

UJ':(2!,,S 6 

PC1 - PC5 

PC6 ` PC7 

BB ?5 LU ?5 LU 

6 + '( B Ae B Ae 

'( o 6 + J_ H He B Ae 

J_ o 6 + f_ H He H He 

f_ o 6 + _( 7 7e H He 

23.11 

C",8-n4, "#+ 8o %"*+ ,0+$->-+5 0#o0+#8-+, $on,-,8+n8 M-8% 8%+ +S0+$8+5 ,+#*-$+ 8++#+n8 1o$"8-on, "1on4 8%+ *+,,+1c, 1+n48%. ?n 

"55-8-on, ,2>>-$-+n8 1o$"1 =2$N1-n4 ,8#+n48% -, "1,o 8o =+


! " h =oM ,%"0+ +S0on+n8 M%-$% =+,8 5+,$#-=+, 8%+ M"8+#01"n+ (,++ S+$8-on ', U-42#+, 

W "n5 )) 

h 1.( >o# " ,-o#< 

h (.f 8o (.\ >o# " ,0oon =oM >o#< 

h ( >o# " 1"n5-n4 $#">8 =oM >o#< 

An "00#oS-


FIGURE 8 

Illustration of ! " Effect on the Bow Shape for # a 20 and $ # a16 

25.5 Design Vertical Shear Force 

="$8o# 8o =+ 8"N+n ", >o11oM,d 

=8 +n5 o> $ 

h -(._ =+8M++n (.'$ "n5 (.\$ >#o< ">8 

h (.( =+8M++n (.)$ >#o< ">8 "n5 8%+ >o#M"#5 +n5 o> $ 

?n8+#o#$+. 



25.7 Design Vertical Ice Bending Moment 

= 8%+ 56!!+ 7!,,!+ )*+!, =K ,2=,8-828-n4 8%+ 5+,-4n *+#8-$"1 -$+ =+n5-n4 


TABLE 8 (continued) 

Longitudinal Strength Criteria 

where 

, a & applied vertical bending stress, in N/mm 2 

8 a & applied vertical shear stress, in N/mm 2 

, y & minimum upper yield stress of the material, in N/mm 2 

, u & ultimate tensile strength of material, in N/mm 2 

, c & critical buckling stress in compression, according to Appendix 3-2-A4 of the 

Steel Vessel Rules, in N/mm 2 

8 c & critical buckling stress in shear, according to Appendix 3-2-A4 of the Steel Vessel 

Rules, in N/mm 2 

: & 0.8 

27 Stem and Stern Frames 

The stem and stern frame are to be designed according to the requirements of 6-1-1/29 of the Steel 

Vessel Rules. For Polar Class PC6 and PC7 vessels requiring Ice Class 1AA/1A Baltic Ice Class of 

Section 6-1-2 of the Steel Vessel Rules equivalency, the stem and stern requirements of the Finnish- 

Swedish Ice Class Rules may need to be additionally considered. 

29 Appendages 

29.1 

29.3 

All appendages are to be designed to withstand forces appropriate for the location of their attachment 

to the hull structure or their position within a hull area. 

Load definition and response criteria are to be determined on a case-by-case basis. 

31 Local Details 

31.1 

31.3 

For the purpose of transferring ice-induced loads to supporting structure (bending moments and shear 

forces), local design details are to prepared and submitted for review. 

The loads carried by a member in way of cut-outs are not to cause instability. Where necessary, the 

structure is to be stiffened. 

26 ABS GUIDE FOR BUILDING AND CLASSING 0ESSELS INTENDED FOR NA0IGATION IN 2OLAR 3ATERS . 2006


BB 

33.1 

33.3 

BE 

35.1 

35.3 

)@:6?5 C4A?>A45@on7 

H-#+$8 $"1$21"8-on, "#+ no8 8o =+ 28-1-T+5 ", "n "18+#n"8-*+ 8o 8%+ "n"1K8-$"1 0#o$+52#+, 0#+,$#-=+5 -n 

8%-, 2n->-+5 #+;2-#+ ,8#2$82#"1 ,K,8+-+5 -n 

S2=,+$8-on '6_ -, 8o =+ "001-+5. 

06A3@nJ 

A11 M+15-n4 M-8%-n -$+-,8#+n48%+n+5 "#+", -, 8o =+ o> 8%+ 5o2=1+ $on8-n2o2, 8K0+. 

Con8-n2-8K o> ,8#+n48% -, 8o =+ +n,2#+5 "8 "11 ,8#2$82#"1 $onn+$8-on,. 

ABS "U$%& '() BU$+%$," A,% C+ASS$," 0&SS&+S $,T&,%&% '() ,A0$"AT$(, $, P(+A) 3AT&)S . 4556 27

T%-, P"4+ ?n8+n8-on"11K Z+>8 B1"nN

Section 3: Machinery Requirements for Polar Class Vessels 

S C C T 1 J a B M4?L@n6:O ,6G>@:6H6n57 Co: PoA4: 

CA477 !6776A7 

1 A22A@?45@on 

T%+ $on8+n8, o> S+$8-on J "001K 8o 8%+ *+,,+1 "n5 8%+ ,2#*-*"=-1-8K o> 8%+ $#+M 

B 

):4;@nJ7 4n3 P4:5@?>A4:7 5o S6 S>SH@5563 

3.1 Environmental Conditions 

H+8"-1, o> 8%+ +n*-#on 5->>+#+n8 >#o< 

*+,,+1c, -$+ $1",,. 

3.3 Drawings 

H+8"-1+5 5#"M-n4, o> 8%+ 8%+ +8K "n5 -n5-$"8-on ,K,8+o# +,,+n8-"1 ,K,8+

Section 3 Machinery Requirements for Polar Class Vessels 

5.5 Propeller Damage 

S-n41+ ,$#+M *+,,+1, $1",,+5 PC5 8o PC1 -n$12,-*+ "#+ 8o %"*+ 8%+ =1"5+. An 

"*+#"4+ - '( u 8"N+n >#o< 8%#++ C%"#0K ^ 8+,8, -, 8o =+ o=8"-n+5 "8 #o< 8%#++ 8+,8, -, 8o =+ o=8"-n+5 "8 +,,+n8-"1 $o


T%+ 1o"5, 4-*+n -n S2=,+$8-on J611 "#+ 8o8"1 1o"5, (2n1+,, o8%+#M-,+ ,8"8+5) 52#-n4 -$+ -n8+#"$8-on "n5 

"#+ 8o =+ "001-+5 ,+0"#"8+1K (2n1+,, o8%+#M-,+ ,8"8+5) "n5 "#+ -n8+n5+5 >o# $o>+#+n8 1o"5, 4-*+n %+#+ "#+ 8o =+ "001-+5 ,+0"#"8+1K. 

G " -, " >o#$+ =+n5-n4 " 0#o0+11+# =1"5+ ="$NM"#5, M%+n 8%+ 0#o0+11+# o# +,8-o# =1"5+ -$+ >o#$+ 

5 &':! h -$+ ,8#+n48% -n5+S >o# =1"5+ -$+ 8o#;2+ 

11.5 Design Ice Loads for Open Propeller 

11.


2 h no#++ #2nn-n4 $on5-8-on) >o# CP-0#o0+11+# 

"n5 )_s o> 8%+ no#++ #2nn-n4 $on5-8-on) 

>o# " UP-0#o0+11+# (#+4"#51+,, 5#-*-n4 +n4-n+ 8K0+) 

G " -, 8o =+ "001-+5 ", " 2n->o#< 0#+,,2#+ 5-,8#-=28-on 8o "n "#+" on 8%+ ="$N (,2$8-on) ,-5+ o> 

8%+ =1"5+ >o# 8%+ >o11oM-n4 1o"5 $",+, 

" $/41 %4,! [K U#o< (.\) 8o 8%+ 8-0 "n5 >#o< 8%+ =1"5+ 1+"5-n4 +54+ 8o " *"12+ o> (.' 

$%o#5 1+n48%. 

" $/41 %4,! _K A 1o"5 +;2"1 8o _(s o> 8%+ G " -, 8o =+ "001-+5 on 8%+ 0#o0+11+# 8-0 "#+" 

o28,-5+ o> (.Y). 

" $/41 %4,! `K Uo# #+*+#,-=1+ 0#o0+11+#,, " 1o"5 +;2"1 8o $s o> 8%+ G " -, 8o =+ "001-+5 

>#o< (.$ 8o 8%+ 8-0 "n5 >#o< 8%+ =1"5+ 8#"-1-n4 +54+ 8o " *"12+ o> (.' $%o#5 1+n48%. 

S++ 1o"5 $",+, 1, ', "n5 _ -n S+$8-on J, T"=1+ '. 

11. 

8%+ =1"5+ >o# 8%+ >o11oM-n4 1o"5, $",+, 

" $/41 %4,! aK U#o< (.\) 8o 8%+ 8-0 "n5 >#o< 8%+ =1"5+ 1+"5-n4 +54+ 8o " *"12+ o> (.' 

$%o#5 1+n48%. 

" $/41 %4,! RK A 1o"5 +;2"1 8o _( s o> 8%+ G . -, 8o =+ "001-+5 on 8%+ 0#o0+11+# 8-0 "#+" 

o28,-5+ o> (.Y). 

" $/41 %4,! `K Uo# #+*+#,-=1+ 0#o0+11+#,, " 1o"5 +;2"1 8o $s o> G . -, 8o =+ "001-+5 >#o< 

(.$ 8o 8%+ 8-0 "n5 >#o< 8%+ =1"5+ 8#"-1-n4 +54+ 8o " *"12+ o> (.' $%o#5 1+n48%. 

S++ 1o"5 $",+, J, f, "n5 _ -n S+$8-on J, T"=1+ '. 



11.-88-n4 ,%"11 =+ $"1$21"8+5 =o8% >o# 

8%+ 1o"5 $",+, 5+,$#-=+5 -n J611._.1 "n5 J611._.' >o# G " "n5 G . .. ?> 8%+,+ ,0-n51+ 8o#;2+ *"12+, 

"#+ 1+,, 8%"n 8%+ 5+>"218 *"12+ 4-*+n =+1oM, 8%+ 5+>"218


TABLE 2 

Load Cases for Open Propeller 

G/0:! $/41!1 I0!4 )'3J6 J421!1 #o< 8%+ 1+"5-n4 +54+ 8o (.' 8-o#< 0#+,,2#+ "001-+5 on 0#o0+11+# >"$+ 

(0#+,,2#+ ,-5+) on 8%+ 0#o0+11+# 8-0 "#+" 

o28,-5+ o> (.Y) #"5-2,. 

Zo"5 $",+ _ $s o> G . o# G " 

M%-$%+*+# -, 

4#+"8+# 

Un->o#< 0#+,,2#+ "001-+5 on 0#o0+11+# >"$+ 

(0#+,,2#+ ,-5+) 8o "n "#+" >#o< (.$ 8o 8%+ 8-0 

"n5 >#o< 8%+ 8#"-1-n4 +54+ 8o (.' 8-


11.7 Design Ice Loads for Ducted Propeller 

11.I.1 M'\,G8G B'-3@'&9 B('9$ Mo&-$ 

T%+ o#$+, G " , -, 8o =+ 8"N+n ",d 

" M%+n ; o ; +'B'6 d 

G " h 6Y._5 ':! % 

" M%+n ; * ; +'B'6 d 

5 

3 

4 

TI) 2 

N 0 

1 

(.J 

% [2;] (.W % ; ' NX 

M%+#+ 

G " h 6\\5 ':! % 

5 

3 

4 

TI) 2 

N 0 

1 

; +'B'6 h fL ':! < 

2 -, 8o =+ 8"N+n ", -n J611._.1. 

(.J 

% [2;] (.W % ; (.\ % [L ':! ] 1.f NX 

G " -, 8o =+ "001-+5 ", " 2n->o#< 0#+,,2#+ 5-,8#-=28-on 8o "n "#+" on 8%+ ="$N ,-5+ >o# 8%+ 

>o11oM-n4 1o"5 $",+, (,++ S+$8-on J, T"=1+ J)d 

" $/41 %4,! [K `n 8%+ ="$N o> 8%+ =1"5+ >#o< (.\) 8o 8%+ 8-0 "n5 >#o< 8%+ =1"5+ 1+"5-n4 

+54+ 8o " *"12+ o> (.' $%o#5 1+n48%. 

" $/41 %4,! `K Uo# #+*+#,-=1+ #o8"8-on 0#o0+11+#,, " 1o"5 +;2"1 8o $s o> G " -, "001-+5 on 

8%+ =1"5+ >"$+ >#o< (.$ 8o 8%+ 8-0 "n5 >#o< 8%+ =1"5+ 8#"-1-n4 +54+ 8o " *"12+ o> (.' $%o#5 

1+n48%. 

11.I.= M'\,G8G Mo&@'&9 B('9$ Mo&-$ 

T%+


11.I.0 M'\,G8G P&o+$(($& 1-$ To&O8$ A++(,$9 .o .H$ P&o+$(($& 

H -88-n4 -, 8o =+ $"1$21"8+5 >o# 8%+ 

1o"5 $",+ 5+,$#-=+5 -n J611.1. ?> 8%+,+ ,0-n51+ 8o#;2+ *"12+, "#+ 1+,, 8%"n 8%+ 5+>"218 *"12+ 

4-*+n =+1oM, 8%+ 5+>"218 *"12+ -, 8o =+ 2,+5. 

M%+#+ 

H+>"218 ^"12+d H , 8%+ 0#o0+11+#) -,d 

U . h 1.1 % G . 

U " h 1.1 % G " 



TABLE 3 

Load Cases for Ducted Propeller 

G/0:! $/41!1 I0!4 )'3J6 J421!1 #o< 8%+ 1+"5-n4 +54+ 8o (.' 8-o#< 0#+,,2#+ "001-+5 on 8%+ =1"5+ >"$+ 

(0#+,,2#+ ,-5+) 8o "n "#+" >#o< (.\) 8o 8%+ 8-0 

"n5 >#o< 8%+ 1+"5-n4 +54+ 8o (._ 8- G . o# G " 

M%-$%+*+# -, 

4#+"8+# 

Un->o#< 0#+,,2#+ "001-+5 on 0#o0+11+# >"$+ 

(0#+,,2#+ ,-5+) 8o "n "#+" >#o< (.\) 8o 8%+ 8-0 

"n5 >#o< 8%+ 8#"-1-n4 +54+ 8o (.' 8-8 1-n+ 5Kn" =1"5+ - %"1> ,-n+ ,%"0+ "n5 o$$2# "8 8%+ =1"5+. T%+ 8o#;2+ 52+ 

8o " ,-n41+ =1"5+ -$+ -


T%+ 8o8"1 -$+ 8o#;2+ -, o=8"-n+5 =K ,28 J\(q6N. T%+ n2 0#o0+11+# #+*o128-on, 52#-n4 " o#


11.K.= M'\,G8G N$5+on5$ TH&85. 

M"S-8 1-n+ -, 8o =+ $"1$21"8+5 M-8% 8%+ >o#8 T%#2,8 B"$NM"#5,d 

U 2 h 0#o0+11+# =o11"#5 8%#2,8, -n NX 

U 0 h U 2 n '.' % U . NX 

U 0 h 1._ % U " NX 

U . h %K5#o5Kn"#++ #2nn-n4 o0+n M"8+# $on5-8-on, 

11.K.0 B('9$ M',(8&$ ?o'9 7o& Zo.H J+$n 'n9 ao^^($ P&o+$(($&5 

T%+ >o#$+ -, "$8-n4 "8 (.)) -n 8%+ M+"N+,8 5-#+$8-on o> 8%+ =1"5+ "n5 "8 " ,0-n51+ "#< o> '6 J o> 

8%+ 5-,8"n$+ o> "S-, o> =1"5+ #o8"8-on o> 1+"5-n4 "n5 8#"-1-n4 +54+ M%-$% +*+# -, 8%+ 4#+"8+,8. 

T%+ =1"5+ >"-12#+ 1o"5 -,d 

G !E h 

' 

: % 6 % 0!. 

(.J % , 

(.) % ; 6 ' % 0 

1( 

J 

NX 

M%+#+ 

, 0!. h (.\, (.' n (.f, * 

, * , , (.' h #+0#+,+n8"8-*+ *"12+, >o# 8%+ =1"5+ 8%+ $K1-n5#-$"1 #oo8 ,+$8-on o> 8%+ =1"5+ "8 8%+ M+"N+,8 ,+$8-on 

o28,-5+ #oo8 >-11+8, 8K0-$"11K "8 8%+ 8+#-1+ 

0 h #"5-2, o> 8%+ $K1-n5#-$"1 #oo8 ,+$8-on o> 8%+ =1"5+ "8 8%+ M+"N+,8 ,+$8-on 

o28,-5+ #oo8 >-11+8, 8K0-$"11K "8 8%+ 8+#-1+ 

ABS "U$%& '() BU$+%$," A,% C+ASS$," 0&SS&+S $,T&,%&% '() ,A0$"AT$(, $, P(+A) 3AT&)S . 4556 39


1B 

)67@Jn 

13.1 Design Principle 

T%+ ,8#+n48% o> 8%+ 0#o021,-on 1-n+ ,%"11 =+ 5+,-4n+5 

'C 

''C 

'''C 

Uo# " 0#o0+11+# =1"5+ ,%"11 no8 $"2,+ 5" 8%+ 

1o"5-n4 $",+, 1+$8 8%+ o0+#"8-on"1 #+"1-8-+, o> 8%+ *+,,+1 "n5 8%+ 8%#2,8+#,. ?n 8%-, #+,0+$8, >o# 

+S" 8%+ 8%#2,8+# ,%"11 =+ 5+,-4n+5 8o 

M-8%,8"n5 8%+ 1o,, o> " =1"5+ M-8%o28 5" " =1"5+ ,%"11 =+ $on,-5+#+5 -n 8%+ 

0#o0+11+# =1"5+ 0o,-8-on, M%-$% $"2,+, 8%+ o11oM-n4 >o#


M%+#+ 

E h 5-,8"n$+ >#o< 8%+ =1"5+ +54+ o# 1+"5-n4 +54+, 

h _ >o# 8-0 

5 ':! h "$$o#5-n4 8o J611.W.' 

< ':! h -$+ 0#+,,2#+ 

h 

1\ M0" >o# 1+"5-n4 +54+ "n5 8-0 8%-$Nn+,, 

! 0!. h "$$o#5-n4 J61J._.1 

T%+ #+;2-#+o# +54+ 8%-$Nn+,, %", 8o =+ "001-+5 >o# 1+"5-n4 +54+ "n5 -n $",+ o> #+*+#,-=1+ 

#o8"8-on o0+n 0#o0+11+#, "1,o >o# 8#"-1-n4 +54+. T-0 8%-$Nn+,, #+>+#, 8o 8%+ 8 $o 8%+ 8, "#+ 8o =+ no8 1+,, 8%"n 8%"8 o=8"-n+5 >#o< 8%+ >o11oM-n4 

+;2"8-ond 

M%+#+ 

1 h 

16 J 

@ ' c = 

1 % > > % U % ; 

< 

( / % ( 

$< 

? P 

1 h 5-" 8%+ ,%">8 =+-n4 $on,-5+#+5, h +S0"n5+5 M-58% o> " $K1-n5#-$"1 ,+$8-on 8 ,8++1, X6


TABLE 6 

Propulsion Shaft Diameter Factor ( 1 

5/+'1 80/ 8%+ 56!!+ 7!,,!+ )*+!,b 

10.I.= N$98-.,on #$'&5 

P-n-on,, 4+"#, "n5 4+"# ,%">8, "#+ 8o =+ 5+,-4n+5 8o M-8%,8"n5 "n -n$#+",+ -n 8o#;2+ o*+# 8%"8 

no#o# 

M"8+#, -n N4-< ' 

% h 1((( 

b%+#+ "001-$"=1+, " *-=#"8o#K 8o#;2+, ", #+,218-n4 >#o< 8%+ 8o#,-on"1 *-=#"8-on "n"1K,-,, -, 8o 

=+ "$$o2n8+5 >o# -n 8%+ 4+"# ,8#+n48% +*"12"8-on. 

10.I.0 M($\,Z($ Co8+(,nE5 

To#,-on"11K >1+S-=1+ $o201-n4, "#+ 8o =+ ,+1+$8+5 ,o 8%"8 8%+ -$+-$o##+$8+5 8o#;2+, ", 5+8+#


13.9 Prime Movers 

10.K.1 S.'&.,nE C'+'Z,(,.,$5 

T%+ M"-n +n4-n+ -, 8o =+ $"0"=1+ o> =+-n4 ,8"#8+5 "n5 #2nn-n4 8%+ 0#o0+11+# M-8% 8%+ CP -n >211 

0-8$%. 

10.K.= D$'.,nE A&&'nE$G$n.5 

P#o*-,-on, "#+ 8o =+


M%+#+ 

G e h 1._ "8 UP 

h (.'_ "8 o# *+,,+1, $on52$8-n4 -$+ =#+"N-n4 ",8+#n 

-n8+#o#$+ no#>+$8, o> -n4+,8-on o# "$$2 "$$2#++T-n4, 8o 8"nN, $on8"-n-n4 1-;2-5,. 

17.5 Vent and Discharge Pipes 

^+n8 0-0+,, -n8"N+ "n5 5-,$%"#4+ 0-0+, "n5 ",,o$-"8+5 ,K,8+#++T-n4 o# -$+ "n5 ,noM "$$2+8K o> 8%+ *+,,+1, 

-n$125-n4 ,+" $%+,8, -n1+8,, -, 8o =+ 5+,-4n+5 >o# 8%+ +n*-#ono# Po1"# C1",, PC1 8o PC5 -n$12,-*+ M%+#+. 

T%+ $"1$21"8+5 *o12o# +"$% o> 8%+ -$+ =oS+, ,%"11 =+ "8 1+",8 1 < J >o# +*+#K W_( Nb o> 8%+ 8o8"1 

-n,8"11+5 0oM+#. Uo# Po1"# C1",,+, PC6 "n5 PC7, 8%+#+ -, 8o =+ "8 1+",8 on+ -$+ =oS 1o$"8+5 0#+>+#"=1K 

n+"# $+n8+#1-n+. 

19.5 Ice Boxes 

?$+ =oS+, "#+ 8o =+ 5+,-4n+5 >o# "n +>>+$8-*+ ,+0"#"8-on o> -$+ "n5 *+n8-n4 o> "-#. 



19.7 Sea Inlet Valves 

S+" -n1+8 *"1*+, "#+ 8o =+ ,+$2#+5 5-#+$81K 8o 8%+ -$+ =oS+,. T%+ *"1*+, "#+ 8o =+ " >211 =o#+ 8K0+. 

19.9 Vent Pipes 

?$+ =oS+, "n5 ,+" ="K, "#+ 8o %"*+ *+n8 0-0+, "n5 "#+ 8o %"*+ ,%28 o>> *"1*+, $onn+$8+5 5-#+$8 8o 8%+ ,%+11. 

19.11 Sea Bays Freezing Prevention 

M+"n, "#+ 8o =+ 0#o*-5+5 8o 0#+*+n8 >#++T-n4 o> ,+" ="K,, -$+ =oS+,, ,%-0 ,-5+ *"1*+, "n5 >-88-n4, 

"=o*+ 8%+ 1o"5 M"8+# 1-n+. 

19.13 Cooling Seawater Re-circulation 

7>>-$-+n8 o# -$+ =oS+, "#+ 8o =+ >-88+5 M-8% 4#"8-n4,, o# %o1+, o# ,1o8, -n ,%+11 01"8+,. T%+ n+8 

"#+" 8%#o24% 8%+,+ o0+n-n4, -, 8o =+ no8 1+,, 8%"n _ 8- 8%+ -n1+8 0-0+. T%+ 5-" %o1+, 

"n5 M-58% o> ,1o8 -n ,%+11 01"8-n4 -, 8o =+ no8 1+, 8%"n '( $1+"#-n4. C1+"#-n4 0-0+, "#+ 8o =+ 0#o*-5+5 M-8% ,$#+M-5oMn 8K0+ non #+82#n *"1*+,. 

F1 

B4AA475 T4nX7 

7>>-$-+n8 #++T-n4 -n >o#+ "n5 ">8+# 0+"N 8"nN, "n5 M-n4 8"nN, 

1o$"8+5 "=o*+ 8%+ M"8+# 1-n+ "n5 M%+#+ o8%+#M-,+ >o2n5 n+$+,,"#K. 

FB 

!6n5@A45@on SO756H 

23.1 Air Intakes Location 

T%+ "-# -n8"N+, >o# %+"8-n4. 

23.5 Machinery Air Intakes 

T%+ 8+o# 8%+ ,">+ 

o0+#"8-on o> 8%+

T%-, P"4+ ?n8+n8-on"11K Z+>8 B1"nN

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