TMS_CH7

Tug Fenders

Image courtesy of Sanmar

Section 7

Trelleborg Marine Systems

www.trelleborg.com/marine

Tug Cylindricals M-Fenders W-Fenders Block Fenders Composites Extrusions

Ref. M1100-S07-V1-3-EN

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TUG FENDERS Tug fenders must work harder, for longer and under more extreme conditions than any other fender type. Tugs may be fitted with up to four types of fender – each type serving a particular application. As many tugs become more powerful, some exceeding 100t bollard pull, choosing the right type, size and arrangement of fenders becomes critical. When selecting fenders, designers should consider: B B B B B B B B B

Bollard pull Initial contact loads Dynamic load effects Friction requirements Pushing angles Hull attachment Fender tolerances Material quality Spares availability

Cylindrical fenders Fitted to the bow/stern of tugs and usually used to push against flared hulls and in open sea conditions. Pushing fenders Block, Cube and W- and Mfenders provide large contact surfaces for low hull pressures. Their grooved surfaces provide exceptional grip.

Side beltings D, Square and Wing-D fenders are often used as side beltings to protect the vessel during escort duties and when coming alongside. Transition Blocks Transition Blocks are used to provide a smooth interface between side beltings and bow/stern fenders.

Contact your local office for further information and advice.

ABAQUS Finite Element Analysis of true hull shapes and fender arrangements

Standard manufacturing and performance tolerances apply (see pages 12–36 to 12–39) M1100-S07-V1-3-EN. © Trelleborg AB, 2011

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TUG CYLINDRICALS Large cylindrical fenders are often used as the primary pushing fenders on the bow or stern of modern tugs. Their round shape is ideal for working with large bow flares (like container ships), but are equally good for pushing flat-sided vessels. Tug Cylindricals come in diameters to 1000mm and in very long continuous or spigot-joined lengths. A longitudinal chain runs down the centre of the fender, supplemented by circumferential straps or chains which are recessed into grooves. Tapered ends are also available.

øD 250 300 380 400 450 500 600 800 900 1000

ød 125 150 190 200 225 250 300 400 450 500

A 200 225 280 300 300 300 350 350 350 350

Bmax 570 600 650 670 700 730 800 930 1000 1060

C 500 700 800 800 850 900 900 1000 1100 1200

øG 190 225 280 300 350 375 450 600 675 750

Groove size varies according to attachment method. Lengths 2–13m in one section, spigot joined for longer lengths.

d

C

øJ 75 75 100 100 100 100 125 125 150 150

Weight 45.5 65.2 105 116 147 181 255 453 573 707

[ Units: mm, kg/m ]

d

øJ øD

ød

øG

A

B

B

B L

Attachment Smaller fenders (≤500mm diameter) are usually fixed by a longitudinal chain through the bore of the fender, connected to the hull by turnbuckles to tension the chain. Larger fenders often use supplementary chains or straps around the fender.

Curve Radius Tug Cylindrical fenders are made in straight lengths but can be pulled around the bow or stern radius.

Chain

Strap

øD

øD

R R≥4 × øD

R

Standard manufacturing and performance tolerances apply (see pages 12–36 to 12–39) M1100-S07-V1-3-EN. © Trelleborg AB, 2011

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M-FENDERS M-Fenders have a large and flexible contact face which exerts a low pressure during pushing operations. The grooves provide extra grip and the triple legs give a strong attachment to the tug. M-Fenders can also be fitted around tight curves, whilst their relative low weight adds to tug stability.

Features B B B B B B

Heavy-duty design Triple-leg attachment Soft, flexible face Grooved for extra grip Low weight per m2 Fits around tight bends

Dimensions Applications

Type

B All types of tug B Pontoon protection B Special corner fenders Note: M-Fenders and W-Fenders are not interchangeable.

A

Fixing B

C

øD

E

F

M400 400 200

40

23

50

M500 500 250

50

27

M600 600 300

60

M800 800 400

80

Lmax

Weight

Pin

150 2000

56

ø20

100 × 15 450

60

190 2000

89

ø24

125 × 20 550

33

70

230 2000

132

ø30

150 × 20 650

44

95

305 2100

235

ø40

150 × 20 900

Rmin

[ Units: mm ]

[ Units: mm, kg/m ]

900

Flat bar

B

A

Reaction force (kN per metre)

800

M400 × 200 M500 × 250 M600 × 300

700

B

600 E

500

øD F

C F

400

E

L

300 200

R (min)

Intermediate support when L > 1000mm Fixing pin

100 0 0

20

40 60 80 Deflection (mm)

100

Standard manufacturing and performance tolerances apply (see pages 12–36 to 12–39) M1100-S07-V1-3-EN. © Trelleborg AB, 2011

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W-FENDERS W-Fenders are made for the most extreme operating conditions. Originally developed by Trelleborg Bakker, the W-Fender is one of the most successful fenders for tugs in the world today. It has a unique ‘open bore’ design which makes installation very simple. The flexible legs allow W-Fenders to be curved around most hull shapes.

Features B B B B B

Extreme-duty design Twin-leg attachment Open bore for easy installation Grooved for extra grip Fits around tight bends

Dimensions Applications B B B B

Type

Ocean-going tugs Icebreakers Large harbour tugs Bridge and pile protection

A

Fixings B

C

E

F

K

Lmax Weight

Flat bar

Rmin

67 50 2000

51

ø25 100 × 20

600

W40-25 400 250 350 220 110

75 55 2000

81

ø30 120 × 20

800

W48-30 480 300 426 269 135

90 65 2000

120

ø40 140 × 20

900

90 100 75 2000

180

ø40 150 × 20 1000

[ Units: mm, kg/m ]

W32-20 W40-25 W48-30

[ Units: mm ]

B

A

600

500

Pin

W32-20 320 200 280 180 100

W50-45 500 450 420 255

Note: M-Fenders and W-Fenders are not interchangeable.

Reaction force (kN per metre)

D

B F

K

400

E D C

300 L

Intermediate support when L > 1000mm

200 Fixing pin 100

R (min)

0 0

20

40 60 Deflection (mm)

80

100

Standard manufacturing and performance tolerances apply (see pages 12–36 to 12–39) M1100-S07-V1-3-EN. © Trelleborg AB, 2011

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BLOCK FENDERS Block and Cube Fenders have a traditional ‘keyhole’ profile which is strong and ideal for heavy-duty applications. There is a choice of grooved or flat face fenders depending on the required friction levels. Where very low friction is needed, Block and Cube Fenders can also be made as Composite fenders with integral UHMW-PE faces. This is useful for tugs that operate in heavy swell and storm conditions.

Block Fender dimensions Features B B B B

Heavy-duty design Traditional, proven shape Grooved or smooth face Optional UHMW-PE face

A 200 250 300 350

B 200 250 300 350

C 35 50 60 70

øD 28 33 33 33

E 130 150 180 210

Fixings øG 90 100 115 125

Lmax 2000 2000 1750 2000

Weight 33 54 80 114

Pin ø25 ø30 ø30 ø30

Flat bar Rmin 100 × 15 450 125 × 20 600 150 × 20 800 175 × 25 1000

[ Units: mm, kg/m ]

Note: M-, W-, Block and Cube fenders are not interchangeable.

Cube Fender dimensions A 250 300

B 250 300

C 50 60

øD 33* 33*

E 150 180

Fixings øG 100 115

* Optional 28mm and 25mm pin.

L 250 200

Weight 13 16

Pin Flat bar ø30* 125 × 20 ø30* 150 × 25

[ Units: mm, kg ]

Rmin 600 800

[ Units: mm ]

B

900

200 × 200 250 × 250 300 × 300 350 × 350

800 Reaction force (kN per metre)

[ Units: mm ]

700

L

A øG B

600

øD

500

C

400

C

E

C

L

Intermediate support when L > 1000mm

300 Fixing pin

200 100

R (min)

0 0

20

40 60 80 Deflection (mm)

100

Standard manufacturing and performance tolerances apply (see pages 12–36 to 12–39) M1100-S07-V1-3-EN. © Trelleborg AB, 2011

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COMPOSITE FENDERS Composite fenders* combine rubber for resilience and UHMW-PE for low-friction and wear resistant properties. The two materials are bonded with a special vulcanising method – stronger and more reliable than a mechanical joint. Composite fenders are used where the simplicity of extrusions are required but with lower shear forces. * Also called Rubbylene

CF-A series

CF-B series

A

B

øC*

t

øD

E

F

G

H

Flat bar

Bolt size

Std Length

100 150 165 200 200 250 300

100 150 125 200 200 250 300

30 65 65 75 100 100 125

20 20 20 25 25 30 30

15 20 20 25 25 30 30

25 30 35 45 45 50 60

10 12 15 20 20 25 30

90–130 110–150 110–150 130–180 130–180 140–200 140–200

200–300 250–350 250–350 300–400 300–400 350–450 350–450

50 × 6 60 × 8 60 × 8 80 × 10 80 × 10 100 × 10 110 × 12

M12 M16 M16 M20 M20 M24 M24

3000 3000 3000 3000 3000 2000 3700

Weight CF-A CF-B 10.3 11.1 21.5 27.0 19.2 24.8 40.2 48.0 36.2 48.0 60.2 75.0 92.1 108

* Dimension only applies to CF-A fender.

CF-C series

[ Units: mm, kg/m ]

CF-D series

A

B

øC*

a

b

c

t

øD

E

F

G

H

Flat bar

Bolt size

Std Length

80 100 120 150

80 100 120 150

42 45 62 73

60 74 88 110

40 50 60 75

44 56 67 83

10 10 12 15

15 15 20 20

25 25 30 30

6 8 10 12

90–130 90–130 110–150 110–150

200–300 200–300 250–350 250–350

45 × 6 45 × 6 60 × 8 60 × 8

M12 M12 M16 M16

2000 2000 2000 3000

* Dimension only applies to CF-C fender.

B

E

t

F

[ Units: mm, kg/m ]

E

B

G t

H

H

F

øD

øD øC

Weight CF-C CF-D 5.4 7.0 8.4 11.0 12.2 15.8 19.7 24.8

a A

øC

A

b c UHMW-PE face (black as standard)

Standard manufacturing and performance tolerances apply (see pages 12–36 to 12–39) M1100-S07-V1-3-EN. © Trelleborg AB, 2011

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EXTRUDED FENDERS Square and D-section extruded profiles are widely used as beltings on tugs and other workboats. DC and SC fenders have a circular bore for extra wall thickness and durability. DD and SD fenders have a D-bore for securing with a flat bar. Extruded fenders are available in many other sections as well. All can be cut to length, drilled, angle cut or pre-curved as required.

Fender E size (kNm)

R (kN)

E (kNm)

R (kN)

DC-fenders Flat bar

Bolt size

Weight

90–130 200–300

50 × 6

M12

10.1

110–150 250–350

60 × 8

M16

20.6

80 × 10

M20

38.5

20

140–200 350–450 100 × 10

M24

59.0

60

25

140–200 350–450 110 × 12

M24

83.7

70

25

140–200 350–450 120 × 12

M30

113

35

80

30

140–200 350–450 130 × 15

M30

146

200

35

80

30

140–200 350–450 130 × 15

M30

137

250

35

100

30

140–200 350–450 130 × 15

M36

214

A

B

øC

øD

E

F

G

H

100

100

30

15

25

10

150

150

65

20

30

12

200

200

75

25

45

15

130–180 300–400

250

250

100

30

50

300

300

125

30

350

350

150

35

400

400

175

400

400

500

500

[ Units: mm, kg/m ]

SC-fenders

100

1.9

157

2.7

173

150

4.2

235

6.4

259

A

B

øC

øD

E

F

G

H

200

7.5

314

11.3

345

250

11.7

392

17.7

431

300

16.9

471

25.5

518

350

22.9

549

34.3

604

400

29.4

628

45.1

690

500

46.0

785

70.5

863

100 150 165 200 200 250 250 300 300 350 350 400 500

100 150 125 200 200 200 250 250 300 350 350 400 500

30 65 65 75 100 80 100 100 125 150 175 200 250

15 20 20 25 25 30 30 30 30 35 35 35 45

25 30 30 45 40 45 50 50 60 65 65 70 90

10 12 15 15 15 20 20 25 25 25 25 30 40

90–130 110–150 110–150 130–180 130–180 140–200 140–200 140–200 140–200 140–200 140–200 140–200 150–230

200–300 250–350 250–350 300–400 300–400 350–450 350–450 350–450 350–450 350–450 350–450 350–450 400–500

Values are per metre.

Rated Reaction

100 80 60

120 100 80 60 40 20 0

on

ti ac

Re

40

rg ne

20

y

E

0 0

10

20

30

40

Energy (% of Rated)

Reaction (% of Rated)

120

Flat bar 50 × 6 60 × 8 60 × 8 80 × 10 80 × 10 90 × 10 100 × 10 100 × 10 110 × 12 120 × 12 120 × 12 130 × 15 150 × 20

Bolt size M12 M16 M16 M20 M20 M24 M24 M24 M24 M30 M30 M30 M36

Weight 11.4 23.6 21.3 43.8 39.5 55.3 67.2 82.6 95.6 126 121 158 247

[ Units: mm, kg/m ]

E

B

F

G

H

H

øD øC

A

50

Deflection (%)

Standard manufacturing and performance tolerances apply (see pages 12–36 to 12–39) M1100-S07-V1-3-EN. © Trelleborg AB, 2011

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EXTRUDED FENDERS

DD-series

Fender E size (kNm)

R (kN)

E (kNm)

R (kN)

A 80 100 125 150 200 200 250 250 300 350 380 400 400 500

B 70 100 125 150 150 200 200 250 300 350 380 300 400 500

C 45 50 60 75 100 100 125 125 150 175 190 175 200 250

D 30 45 60 75 80 100 100 125 150 175 190 150 200 250

øE 30 30 40 40 50 50 60 60 60 75 75 75 75 90

øF 15 15 20 20 25 25 30 30 30 35 35 35 35 45

G 90–130 90–130 110–150 110–150 130–180 130–180 140–200 140–200 140–200 140–200 140–200 140–200 140–200 160–230

H 200–300 200–300 250–300 250–300 300–400 300–400 350–450 350–450 350–450 350–450 350–450 350–450 350–450 400–500

Flat bar Bolt size Weight 35 × 5 M12 4.8 40 × 5 M12 8.5 50 × 6 M16 13.2 60 × 8 M16 18.5 80 × 10 M20 23.1 80 × 10 M20 32.9 90 × 12 M24 39.9 90 × 12 M24 51.5 110 × 12 M24 74.1 130 × 15 M30 101 140 × 15 M30 119 130 × 15 M30 99 150 × 15 M30 132 180 × 20 M36 206

100

1.4

77

2.7

136

150

3.2

115

6.4

206

200

5.7

153

11.3

275

A

B

C

D

øE

øF

G

H

Flat bar

250

8.9

191

17.6

343

100

100

50

45

30

15

90–130

200–300

40 × 5

M12

9.9

300

12.9

230

25.5

412

150

150

70

65

40

20

110–150 250–300

50 × 8

M16

22.7

350

17.6

268

34.3

471

165

125

80

60

40

20

110–150 250–300

60 × 8

M16

20.3

200

150

90

65

50

25

130–180 300–400

70 × 10

M20

30.8

200

200

90

95

50

25

130–180 300–400

70 × 10

M20

39.8

250

200

120

95

60

30

140–200 350–450

90 × 12

M24

49.4

250

250

120

120

60

30

140–200 350–450

90 × 12

M24

61.1

300

250

140

115

60

30

140–200 350–450 100 × 12

M24

75.0

300

300

125

135

60

30

140–200 350–450 100 × 12

M24

92.0

400

400

200

200

75

35

140–200 350–450 150 × 15

M30

153

500

500

250

250

90

45

160–230 400–500 180 × 20

M36

239

400

23.0

306

45.2

589

500

35.9

383

70.7

736

[ Units: mm, kg/m ]

SD-series

Values are per metre.

Rated Reaction

100 80 60

120 100 80 60 40 20 0

on cti

a

40

Re

20

En

erg

y

0 0

10

20

30

40

[ Units: mm, kg/m ]

Energy (% of Rated)

Reaction (% of Rated)

120

Bolt size Weight

G 25

B D

F

H

H

øE C A

50

Deflection (%)

Standard manufacturing and performance tolerances apply (see pages 12–36 to 12–39) M1100-S07-V1-3-EN. © Trelleborg AB, 2011

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CHAINS & ACCESSORIES Open Link Chains øC L 42 48 54 60 66 75 84 90 96 105 114 120 135 150 165 180

14 16 18 20 22 25 28 30 32 35 38 40 45 50 55 60

3.0D links W Weight 18 0.2 21 0.3 23 0.4 26 0.5 29 0.7 33 1.1 36 1.4 39 1.8 42 2.2 46 2.8 49 3.6 52 4.2 59 6.0 65 8.2 72 10.9 78 14.2

L 49 56 63 70 77 88 98 105 112 123 133 140 158 175 193 210

3.5D links W Weight 20 0.2 22 0.3 25 0.4 28 0.6 31 0.8 35 1.1 39 1.6 42 2.0 45 2.4 49 3.1 53 3.9 56 4.6 63 6.5 70 8.9 77 11.9 84 15.4

L 56 64 72 80 88 100 112 120 128 140 152 160 180 200 220 240

4.0D links W Weight 20 0.2 22 0.3 25 0.5 28 0.6 31 0.8 35 1.2 39 1.7 42 2.1 45 2.5 49 3.3 53 4.3 56 5.0 63 7.1 70 9.7 77 12.9 84 16.8

L 70 80 90 100 110 125 140 150 160 175 190 200 225 250 275 300

5.0D links W 21 24 27 30 33 38 42 45 48 53 57 60 68 75 83 90

MBL SL2 SL3 124 154 160 202 209 262 264 330 304 380 393 491 492 616 566 706 644 804 770 964 900 1130 1010 1260 1275 1590 1570 1960 1900 2380 2260 2770

[ Units: mm, kg/link, kN ]

L

W

Weight 0.3 0.4 0.5 0.8 1.0 1.5 2.0 2.5 3.0 4.0 5.1 6.0 8.5 11.6 15.5 20.1

øC

High Strength Shackles ØD

ØF

ØH

G

13 16 19 22 25 28 32 35 38 45 50 57 65 75 89 102

16 19 22 25 28 32 35 38 42 50 57 65 70 80 95 108

26 32 38 44 50 56 64 70 76 90 100 114 130 150 178 204

22 27 31 36 43 47 51 57 60 74 83 95 105 127 146 165

E

Dee shackle Weight

43 51 59 73 85 90 94 115 127 149 171 190 203 230 267 400

0.4 0.7 1.1 1.5 2.6 3.3 4.7 6.2 7.6 12.8 18.2 27.8 35.1 60.0 93.0 145

E

Bow shackle ØJ

Weight

51 64 76 83 95 108 115 133 146 178 197 222 254 330 381 400

32 43 51 58 68 75 83 95 99 126 138 160 180 190 238 275

0.4 0.8 1.3 1.9 2.8 3.8 5.3 7.0 8.8 15.0 20.7 29.3 41.0 64.5 110 160

NBL 120 195 285 390 510 570 720 810 1020 1500 2100 2550 3330 5100 7200 9000

[ Units: mm, kg, kN ]

Dee

Bow ØD

ØD ØJ

E ØH Safety pin

E

ØH G

ØF

G

MBL = Minimum Breaking Load (kN) NBL = Nominal Breaking Load (kN) Tolerance: all dimensions ±2%

ØF

M1100-S07-V1-3-EN © Trelleborg AB, 2011

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Proven in practice

© Graeme Ewens

M1100-S07-V1-3-EN © Trelleborg AB, 2011

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PROJECT REQUIREMENTS For assistance with design or pricing of tug fenders, please complete this form and fax or email it to your local Trelleborg Marine Systems office, together with legible drawings if possible. PROJECT DETAILS

PROJECT STATUS

Operating Port/Region

TMS Ref:

Owner/Operator

Design

Naval Architect

Under Construction

Shipyard

Refit

VESSEL

Name or Yard Number: ________________________________________________

Overall length _________________ m

Length at waterline _____________ m

Beam (moulded) _______________m

Draft (max) ___________________ m

Displacement __________________ t

Bollard pull (BP) _________________t

Pushing hull pressure ________ t/m2

Operating angle (α) ________ degrees

Flare angle (β) ___________ degrees

Operating Angle

β

α

CYLINDRICAL FENDER Bow

Stern

Inside diameter _______________mm

Outside diameter ______________mm

Length _______________________ m

Joints allowed:

Longitudinal chain:

yes

Circumferential fixings:

chain

no web

yes

no

Tapered ends:

yes

no

Size _____________________mm not required

M1100-S07-V1-3-EN © Trelleborg AB, 2011

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PROJECT REQUIREMENTS PUSHING FENDERS Bow

Stern

M-Type BOW W-Type

Keyhole STERN Section Size (mm)

SIDE BELTINGS

(tick required section) Section size __________________mm Joints allowed:

yes

no

Transition Blocks:

Approx. length _________________ m Plugged joints: Bow:

DRAWINGS

yes

yes

no

no

Stern:

Full drawings available

ENVIRONMENT

yes

Corrosivity

Minimum ________ (°C)

low

medium

Maximum _______ (°C)

high

extreme

yes

no

no

QUALITY

Operating temperature

(total port and starboard)

SAFETY

Highest quality

Maximum safety

Lowest price

Not safety-critical

FURTHER DETAILS AVAILABLE FROM Name

Tel

Company

Fax

Position

Mobile

Address

Email Web

M1100-S07-V1-3-EN © Trelleborg AB, 2011

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