Iranian Classification Society Rules

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Section 1 Anchor, Chain and Rope

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Ch 1 1


101. General


1. Dredgers, according to their equipment number, are to be provided with anchors, anchor chains and ropes which are not less than those given in Table 11.1.


2. Anchors, anchor chains and ropes for barges having equipment number not more than than 3210 are to be at the discretion of this Society.


3. Anchors, anchor chains and ropes are to comply with the requirements specified in Pt

the rules for the Classification of steel ships.


50 or more


4, Ch 8 of


102. Equipment number

The Equipment Number is that obtained from the following formula.


Ë

Á G B JĖĞ ËĦŊAY Ğ ŊĦËA


B : full load displacement (Ź)

h and A

: value of followings

(1) h (m ) is the value obtained from the following formula.


X Ğ Y′


X : vertical distance from the load line to the top of uppermost deck beam at the side of ship' centerline. (m )

Y′ : height from the uppermost deck to the top of uppermost superstructures or deckhouses

having a breadth greater than AĤĖ (m ). In the calculation, the sheer and trim are not

included. Where a deckhouse deckhouse having a breadth of of AĤĖ or less is not included.

having a breadth greater than AĤĖ is located above a

AĤĖ or less, the height of deckhouse having a breadth

(2) A(cm Ë) is the value obtained from the following formula.


XÄ ĞÖY″Ŷ


X : specified in (1).

ÖY″Ŷ : sum of the products of deckhouses and trunks length of ship and also more.


the height Y″ (m ) and the length l (m ) of superstructures, which are located above the uppermost deck within the

have a breadth of AĤĖ orv more and a height of 1.5 m or

(3) In application of (1) and (2), screens or bulwarks more than 1.5 m in height are to be re- garded as a part of superstructures or deckhouses.


103. Anchors


1. Where total weight of bow anchors is not less than that given in Table 11.1, the weight of any

Ch 1 1

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one anchor may be of 93 % of the weight of anchor given in Table 11.1.


2. Where stock anchors are used , the weight excluding the stock may be of 0.8 times the weight specified in Table 11.1.


3. Where


high holding power anchors are used,


the weight of each anchor may be of 0.7 times the

weight specified in Table 11.1. image


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Table 11.1 Anchor, Anchor chain and Rope



Equip ment letter


Equipment Number

Anchor

Anchor chain(with stud)

Fiber rope


No.


weight(weig ht of stock- less anchor)


Length

Diameter


No.


Length


Breaking load


Grade I

Grade II

Grade III


BA 1 BA 2 BA 3 BA 4 BA 5

not Exceedi


ng exceed- ing


50 70

70 90

90 110

110 130

130 150


2

2

2

2

2


kg


180

240

300

360

420


m


220

220

247.5

247.5

275


mm


14

16

17.5

19

20.5


mm


12.5

14

16

17.5

17.5


mm


3

3

3

3

3


m


80

100

110

110

120


kg


3,500

3,750

4,000

4,500

5,000


BB 1 BB 2 BB 3 BB 4 BB 5


150 175

175 205

205 240

240 280

280 320


2

2

2

2

2


480

570

660

780

900


275

302.5

302.5

330

357.5


22

24

26

28

30


19

20.5

22

24

26


3

3

4

4

4


120

120

120

120

140


5,500

6,000

6,500

7,000

7,500


BC 1 BC 2 BC 3 BC 4 BC 5


320 360

360 400

400 450

450 500

500 550


2

2

2

2

2


1,020

1,140

1,290

1,440

1,590


357.5

385

385

412.5

412.5


32

34

36

38

40


28

30

32

34

34


4

4

4

4

4


140

140

140

140

160


8,000

9,000

10,000

11,000

12,500


BD 1 BD 2 BD 3 BD 4 BD 5


550 600

600 660

660 720

720 780

780 840


2

2

2

2

2


1,740

1,920

2,100

2,280

2,460


440

440

440

467.5

467.5


42

44

46

48

50


36

38

40

42

44


4

4

4

4

4


160

160

160

170

170


13,500

15,000

16,000

17,500

19,000


BE 1 BE 2 BE 3 BE 4 BE 5


840 910

910 980

980 1,060

1,060 1,140

1,140 1,220


2

2

2

2

2


2,640

2,850

3,060

3,300

3,540


467.5

495

495

495

522.5


52

54

56

58

60


46

48

50

50

52


40

42

44

46

46


4

4

4

4

4


170

170

180

180

180

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22,000

23,500

25,500

27,500

Ch 1 1

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Equip ment letter


Equipment Number

Anchor

Anchor chain(with stud)

Fiber rope


No.


weight(weig ht of stock- less anchor)


length

Diameter


No.


length


Breaking load


Grade I


Grade II


Grade III


BF 1 BF 2 BF 3 BF 4 BF 5

Exceedi Not ex- ng ceeding


1,220 1,300

1,300 1,390

1,390 1,480

1,480 1,570

1,570 1,670


2

2

2

2

2


kg


3,780

4,050

4,320

4,590

4,890


m


522.5

522.5

550

550

550


mm


62

64

66

68

70


mm


54

56

58

60

62


mm


48

50

50

52

54


4

4

4

5

5


m


180

180

180

190

190


kg


29,000

31,500

33,000

33,000

34,000


BG 1 BG 2 BG 3 BG 4 BG 5


1,670 1,790

1,790 1,930

1,930 2,080

2,080 2,230

2,230 2,380


2

2

2

2

2


5,250

5,610

6,000

6,450

6,900


577.5

577.5

577.5

605

605


73

76

78

81

84


64

66

68

70

73


56

58

60

62

64


5

5

5

5

5


190

190

190

200

200

⊕

36,000

38,500

41,000

43,000

46,000


BH 1 BH 2 BH 3 BH 4 BH 5


2,380 2,530

2,530 2,700

2,700 2,870

2,870 3,040

3,040 3,210


2

2

2

2

2


7,350

7,800

8,300

8,700

9,300


605

632.5

632.5

632.5

660


87

90

92

95

97


76

78

81

84

84


66

68

70

73

76


5

6

6

6

6


200

200

200

200

200


49,000

50,000

51,000

⊚ 51,000

53,000


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Remark : 1. Where steel wire ropes are used, the following wire ropes corresponding to the marks shown in the table, ●(6×12), ⊕(6×24) and ⊚(6×37), are to be provided.

2. The length of chain cables may be incuded the length of shackles for connection.

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3. For the dredger having 205 or used in lieu of chain cables.

less in equipment number, the wire ropes may be

Ch 1 2

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