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    ISO 13795-2012 Marine Double Bollard Type A

    ISO 13795-2012 Marine Double Bollard Type A

    Introduction:

    ISO 13795-2012 specifies the requirements and dimensions for a type A marine double bollard used for mooring and towing operations on board ships and at port facilities.

    A double bollard consists of two vertical posts (or horns) mounted on a base plate with a crossbeam connecting the two horns. The type A double bollard has symmetrical horns with a circular cross-section and a constant diameter along the length of the horn.

    The ISO 13795-2012 standard specifies the minimum dimensions for the horns and the base plate, as well as the distance between the horns and the height of the crossbeam. The bollard is designed to withstand a maximum load, which is specified in the standard.

    Type A double bollards are commonly used in ports and harbors for mooring larger vessels, such as tankers and container ships. They can also be used for towing operations and are usually made of steel or other durable materials to withstand the harsh marine environment.


    Drawing of ISO 13795-2012 Marine Double Bollard Type A:



    Parameters of ISO 13795-2012 Marine Double Bollard Type A:

    Nominal

    Size

    Dn

    D1

    D2

    D3

    D4

    H1

    H2

    H3

    H4

    b

    L

    E

    t

    t1

    t2

    R

    150

    165.2

    185

    -

    80

    330

    90

    70

    60

    155

    400

    -

    8.0

    6

    6

    40

    200

    216.3

    240

    -

    130

    395

    115

    70

    60

    205

    500

    -

    8.0

    6

    6

    50

    250A

    267.4

    290

    -

    160

    505

    135

    90

    75

    250

    630

    -

    12.0

    9

    8

    60

    250B

    267.4

    290

    -

    160

    505

    135

    90

    75

    250

    630

    -

    10.0

    8

    7

    60

    300A

    318.5

    340

    150

    185

    600

    150

    110

    85

    290

    800

    300

    21.5

    16

    9

    70

    300B

    318.5

    340

    150

    185

    600

    150

    110

    85

    290

    800

    300

    12.0

    9

    9

    70

    350A

    355.6

    380

    170

    200

    685

    175

    130

    105

    340

    890

    350

    26.0

    19

    11

    80

    350B

    355.6

    380

    170

    220

    685

    175

    130

    105

    340

    890

    350

    14.0

    10

    9

    80

    400A

    406.4

    430

    190

    230

    730

    185

    145

    115

    380

    1000

    380

    28.0

    20

    13

    85

    400B

    406.4

    430

    190

    250

    730

    185

    145

    115

    380

    1000

    380

    15.0

    11

    11

    85

    450A

    457.2

    480

    210

    265

    770

    195

    160

    120

    425

    1100

    410

    29.0

    21

    14

    90

    450B

    457.2

    480

    210

    285

    770

    195

    160

    120

    425

    1100

    410

    14.5

    11

    11

    90

    500A

    508.0

    530

    235

    295

    830

    230

    200

    150

    480

    1250

    460

    32.0

    23

    16

    100

    500B

    508.0

    530

    235

    320

    830

    230

    200

    150

    480

    1250

    460

    14.5

    11

    11

    100

    550A

    558.8

    580

    255

    330

    900

    270

    200

    180

    520

    1380

    540

    31.0

    22

    16

    110

    550B

    558.8

    580

    255

    350

    900

    270

    200

    180

    520

    1380

    540

    21.0

    16

    11

    110

    600

    609.4

    630

    280

    365

    950

    300

    200

    200

    560

    1550

    600

    33.0

    23

    16

    120

    SWL of ISO 13795-2012 Marine Double Bollard Type A:

    Nominal

    Size

    Welding leg length

    SWL

    Calculated

    weight

    For mooring purposes

    (Figure-of-eight belay)

    For towing purposes

    (eye splice)

    Dn

    z1

    z2

    One-rope use

    Two-rope use

    (kg)

    (kN)

    (t)

    (kN)

    (t)

    (kN)

    (t)

    150

    3.5

    3.5

    54

    5.5

    49

    5.0

    383

    10

    29

    200

    3.5

    3.5

    82

    8.4

    65

    6.7

    579

    13

    46

    250A

    5.5

    4

    156

    16

    134

    14

    1315

    27

    107

    250B

    5.5

    4

    127

    13

    108

    11

    215

    22

    91

    300A

    10.5

    4

    332

    34

    306

    31

    3365

    62

    281

    300B

    10.5

    4

    186

    19

    161

    16

    352

    36

    166

    350A

    12.5

    5

    443

    45

    418

    43

    5062

    85

    431

    350B

    7

    4

    244

    25

    216

    22

    2855

    50

    241

    400A

    12.5

    6

    594

    61

    521

    53

    6632

    106

    570

    400B

    8

    5

    326

    33

    269

    27

    3816

    67

    322

    450A

    12

    7

    753

    77

    612

    62

    8201

    124

    712

    450B

    8

    7

    382

    39

    292

    30

    4483

    78

    379

    500A

    12.5

    8

    992

    101

    757

    77

    10928

    154

    960

    500B

    8

    5

    457

    47

    326

    33

    5474

    93

    465

    550A

    11.5

    8

    1131

    115

    812

    83

    12635

    165

    1123

    550B

    11.5

    5

    781

    80

    541

    55

    9280

    159

    787

    600

    11.5

    8

    1401

    143

    948

    97

    15539

    193

    1391

    ISO 13795-2012 Marine Double Bollard Type A in Factory:

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