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Published Bollard Pull Comparison

Vessel

Owner

Propellers

Screws

# of

engine

# of

Power

Power

Trial

Bollard

Bollard

Lb/HP

Astern

Bollard

Source Publication

type

dia

blades

prop

BHP

density

speed

pull

Efficiency

pull

Efficiency

in

HP/ft2

knots

lb

lb

Niigata Z-Drives with modified 19a Nozzles

Seaspan Discovery

Seaspan International

Niigata ZP-2A

82.68

4

Detroit 149TI-DEC

2

1600

42.91

12.3

87940

1.44

27.48

84,000

1.37

World Book Yearbook 1994 p22

Vancouver

Shafer Transportation

Niigata ZP-2A

82.68

4

Detroit 149TI-DDEC

2

1500

40.23

12.4

82000

1.40

27.33

80,700

1.38

World Book Yearbook 1994 p24

Ocean Intrepide

Le Groupe Ocean

Niigata ZP21 19a

82.68

Mitsubishi S16R-MPTA

2

2,038

54.66

12.5

106,700

1.48

26.18

Tug & Salvage Sep/Oct 98 p31

Point Valiant

Eastern Canada Towing

Niigata ZP-21

79.00

Mitsubishi S16R-MPTA

2

2,038

59.87

90000

1.29

22.08

Marine News May 31, 99 p24

Ocean Intrepide

Le Groupe Ocean RAL

Niigata ZP21 19a

82.68

Mitsubishi S16R-MPTA

2

2,038

54.66

12.8

106,000

1.47

26.01

West Coast Mariner Feb 1999 p37

Point Valiant

Eastern Canada Towing

Niigata ZP-21

79.00

4

Mitsubishi S16R-MPTA

2

2,038

59.87

13.5

101,190

1.45

24.83

American Tugboat review 99 p53

Ocean Intrepide

Le Groupe Ocean

Niigata ZP21 19a

82.68

Mitsubishi S16R-MPTA

2

2,038

54.66

13

100,000

1.39

24.53

American Tugboat review 99 p75

Ulstein Z-Drives with 19a Nozzles

Silex, Thrax

Torksey Ltd.

Ulstein/Liaaen TCN 92/68-250

98.43

Wartsila 6V28

2

2500

47.31

14

132280

1.43

26.46

125,660

1.36

World Book Yearbook 1994 p50

Z-three, Z-four, Z-five

Tugz International

Ulstein 1650H Kort

86.00

4

Cat 3516 B

2

2,000

49.58

12

99,270

1.36

24.82

Tug & Salvage Jan/Feb 99 p23

Fort Bragg

Cape Fear Towing

Ulstein 1650H Kort

90.00

4

Cat 3616 B

2

2,200

49.80

13

119,050

1.49

27.06

Tug & Salvage Jan/Feb 99 p27

Point Clear

Crescent Towing Co.

Ulstein 1650 Kort

85.00

GE 7FDM12A16

2

2,500

63.44

143,300

1.71

28.66

Tug & Salvage Sep/Oct 99 p14

Atlantic Hemlock

Atlantic Towing

Ulstiein Z-Drives

86.00

16-645-E2 EMD

2

2,145

53.17

108,000

1.41

25.17

95,400

1.25

American Tugboat review 96 p6

Gyrfalcon

Alaska Marine Charters

Z-dr Ulstien

86.00

Caterpillar 3516-B

2

2,000

49.58

14

112,000

1.53

28.00

American Tugboat review 96 p18

James Dunlap

Dunlap Towing

Ulstein 1650H z-dr

86.00

4

EMD 16-645E2

2

1,950

48.34

108,000

1.51

27.69

American Tugboat review 96 p42

Z-One & Z-two

Tugz International

Ulstein 1650 Kort

86.00

4

Cat 3516 BTA

2

2,200

54.54

14

112,000

1.44

25.45

American Tugboat review 97 p58

Mamo

Hawaiian Tug & Barge

Ulstein 1650 Kort

90.00

4

Cat 3512B

2

1,600

36.22

13

90,000

1.39

28.13

American Tugboat review 97 p63

SDM New River

Hvide Marine

Ulstein 1650 Kort

86.00

4

Cat 3516B

2

2,000

49.58

12.5

105,000

1.44

26.25

American Tugboat review 98 p58

Fort Bragg

Cape Fear Towing

Ulstein 1650H Kort

90.00

4

Cat 3616 B

2

2,200

49.80

14

120,000

1.50

27.27

American Tugboat review 99 p25

Point Clear

Crescent Towing Co.

Ulstein Kort

85.00

GE 7FDM12A16

2

3,000

76.13

145,000

1.53

24.17

American Tugboat review 99 p33

Z-Three, Z-Four, Z-Five

Great lake Towing

Ulstein 1650 Kort

86.00

4

Cat 3516B

2

2,000

49.58

14

110,000

1.51

27.50

102,000

1.40

American Tugboat review 99 p56

SDM Suwannee River

Hvide Marine

Ulstein 1650 Kort

94.00

4

Wartsila-Vasa 9L20

2

2,000

41.50

12.5

110,000

1.42

27.50

110,000

1.42

American Tugboat review 99 p63

Tira Lani

Sause Bros Ocean Towing

Ulstein 1650H Kort

86.00

4

Cat 3516B

2

2,050

50.82

109,000

1.47

26.59

American Tugboat review 99 p88

Tira Lani

Sause Bros Ocean Towing

Ulstein 1650H Kort

86.00

4

Cat 3516B

2

2,100

52.06

13

120,000

1.59

28.57

100,000

1.33

Work Boat July 99 p34

Aquamaster Z-Drives with modified 19a Nozzles

Impulse

UK Ministry of Defence

Aquamaster US1401

78.74

4

W.H. Allen 8S12

2

1700

50.27

12.75

85100

1.38

25.03

79,145

1.28

World Book Yearbook 1994 p42

Sanergy Tujuh, Lapen, Sembilan

President Marine Pte Ltd

Aquamaster US1701/3000

84.65

Wartsila 6R25

2

2000

51.17

13.8

103610

1.43

25.90

World Book Yearbook 1994 p45

Elizabeth Turecamo

White Stack Marine Corp.

Aquamaster 3001 z-dr

106.30

4

EMD 16-645 E7B

2

3,070

49.81

14

149,900

1.34

24.41

Tug & Salvage Sep/Oct 98 p21

Michel

Peterson & Alpers

Aquamaster US2001

84.65

MaK 8M20

2

2,038

52.15

12.2

112,430

1.54

27.58

Tug & Salvage Nov/Dec 98 p19

Sea Salvor

civil Protection Department - Malta

Aquamaster US2001

90.55

4

MWM Deutz SBV 8M

2

2,253

50.38

12.5

121,250

1.48

26.91

Tug & Salvage Jan/Feb 99 p25

Hasik / Rakhyut

Cory Towage

Aquamaster US 2001

94.50

Caterpillar 3606 TA

2

2,414

49.56

13

121,250

1.38

25.11

113,540

1.29

Tug & Salvage Mar/April 99 p20

Smit Mississippi/ Mersey

Smit International

Aquamaster US 3001 z-drive

102.36

4

Wartsila 6L26

2

2,454

42.94

13.6

134,920

1.44

27.49

124,340

1.32

Tug & Salvage May/June 99 p11

Frigga, Freja, Fenja

Em Z Svitzer

Aquamaster CP US 3001

94.50

MaK 6M25

2

2,446

50.22

14

136,685

1.54

27.94

Tug & Salvage Jul/Aug 99 p18

Cecilia B Slatten

Bisso Towboat Co.

Aquamaster US 2001

90.00

4

EMD 16-645 E6

2

2,150

48.67

14

117,000

1.48

27.21

Tug & Salvage Jul/Aug 99 p21

Smit Ahoada

Smit International

Aquamaster US 2001

94.50

Cat 3516B

2

2,100

43.11

115,960

1.44

27.61

Tug & Salvage Jul/Aug 99 p21

BC Dutt, Tarafdar

Indian Navy

Aquamaster US1201

70.87

Cummins KT3067

2

1,250

45.63

12.3

61,730

1.32

24.69

Tug & Salvage Nov/Dec 99 p19

Persada Jaya, Enny Jaya

Java Marine Lines

Aquamaster US901

63.00

4

Cat 3508BTA

2

1,000

46.19

12

52,910

1.42

26.46

Tug & Salvage Nov/Dec 99 p27

Aventureeaux

Les Abeille

Aquamaster US 1401

78.50

4

ABC 6MDZC

2

1,776

52.84

12

89,300

1.41

25.14

Ship & Boat International Nov 99 p23

Smit Yerwa

Smit International

Aquamaster US 2001

94.50

Cat 3516B TA

2

2,000

41.06

12.7

110,230

1.42

27.56

99,200

1.28

Ship & Boat International Nov 99 p27

Smit Missouri

Smit International

Aquamaster US 3001

106.30

Wartsial 6L26

2

2,454

39.82

13.2

134,480

1.40

27.40

123,457

1.28

Ship & Boat International Nov 99 p27

Spruce & Fir &Hemlock

Atlantic Towing

Aquamaster US 1701 z-dr

83.00

Caterpillar 3516TA

2

2,000

53.23

13.5

112,000

1.57

28.00

American Tugboat review 96 p22

Kinsman Hawk & Condor

Bay Transportation corp.

Aqumaster 3001/3600 z-dr

110.00

4

Wartsila 6R32E

2

3,350

50.76

14

172,000

1.42

25.67

American Tugboat review 96 p25

Eddie C.

Wilmington Transportation

Aquamaster 1701z-drive

86.00

Caterpillar 3516

2

1,600

39.66

14

111,000

1.77

34.69

American Tugboat review 96 p37

Broward

Hvide Marine

Aquamaster 2001/3250 z-drive

75.00

Twin EMD 12-645F7B

2

2,550

83.12

14

120,000

1.53

23.53

American Tugboat review 96 p48

Kinsman Eagle II

Bay Transportation corp.

Aquamaster 3001/3600 z-drive

110.00

Wartsila 6R32E

2

3,350

50.76

14

172,000

1.42

25.67

American Tugboat review 97 p31

Kinsman Venture/Relient

Bay Transportation corp.

Aquamaster 2001/3150 z-drive

91.00

EMD 15-645 E2

2

2,150

47.60

14

110,000

1.38

25.58

American Tugboat review 97 p33

Spruce & Fir &Hemlock

Atlantic Towing

Aquamaster US 1701 z-dr

83.00

Caterpillar 3516TA

2

2,000

53.23

13.5

112,000

1.57

28.00

American Tugboat review 98 p22

Delta Linda & Delta Carey

Baydelta Maritime

Aquamaster z-drives

94.50

4

Cat 3516 B

2

2,200

45.17

14.3

118,000

1.43

26.82

American Tugboat review 98 p32

Elizabeth Turecamo

White Stack Marine Corp.

Aquamaster 3001 z-dr

106.30

4

EMD 16-645 E7B

2

3,070

49.81

14

160,000

1.43

26.06

American Tugboat review 98 p85

Cecilia B Slatten

Bisso Towboat Co.

Aquamaster US 2001

90.00

4

EMD 16-645 E6

2

2,150

48.67

14

117,000

1.48

27.21

American Tugboat review 99 p20

Atlantic Willow

Atlantic Towing Ltd.

Aquamaster US 1701 z-dr

84.00

4

Cat 3516 TA

2

2,002

52.02

12.5

98,000

1.36

24.48

Workboat Dec 98 p66

Cecilia B Slatten 3.422:1

Bisso Towboat Co.

Aquamaster US 2001

90.00

4

EMD 16-645 E6

2

2,150

48.67

14

117,000

1.48

27.21

Work Boat July 99 p46

Willamette

Shaver Transportation Co.

Aquamaster US 2001 PV-Duct

90.55

4

Detroit Diesel 16V149-TI

2

1,800

40.25

105,000

1.49

29.17

Workboat Dec 99 p100

Willamette

Shaver Transportation Co.

Aquamaster US 2001 PV-Duct

90.55

4

Detroit Diesel 16V149-TI

2

1,800

40.25

105,000

1.49

29.17

Harbour & Shipping Nov 99 p34

Rivtow Spirit

Rivtow Marine

Aquamaster 1401

78.74

4

Detroit 16V149TIB

2

1,515

44.80

12.3

85,980

1.50

28.38

ITS Report Aug 96 p35

Van de Giesen Nozzles

El Oriental

Venecia Ship Service

Van de Giesen Nozzles

104.33

4

Cat 3606 TA

2

2,310

38.91

12.6

145,500

1.59

31.49

Tug & Salvage Sep/Oct 98 p25

Teign

Teignmouth Harbour Commision

Van de Giesen Nozzles

39.37

Cummins NT855-M/CR

2

304

35.96

9.5

17,636

1.43

29.01

ITS Report July 97 p15

Fixed Conventional ("Kort") Nozzles

Manutara II

Sudamericana Agencias

Nozzles

86.61

Yanmar T240A-ET

2

1400

34.22

12

80000

1.38

28.57

World Book Yearbook 1994 p26

Koyo Maru

Nippon Salvage Company

Kamome CPP in Kort Nozzles

137.80

Daihatsu 8DLM-40A

2

5,500

53.11

18.34

265,000

1.35

24.09

Tug &