Description of Mooring bitts
Mooring bitts are installed in the deck of bow/stern and the mid-deck of the ship for fastening the cable during berthing and towing operations. There are many types such as curved bollard, J type dock bollard, T-head bollard, single bitts, double bitts, cross bitts, etc.. Large and medium-size ships usually use double bollards.
Cast iron mooring bollard is usually used in oil tankers to avoid the spark when mooring. Bollards on yachts are usually made of bronze, stainless steel or other alloy materials. The specifications of the cable piles are selected according to the diameter of the cable. The quantity of the pile is decided according to the type and tonnage of the ship.
DIMENSION | BOLLARD CAPACITY (tons) | ||||
15T | 20T | 25T | 30T | 35T | |
A | 30 | 40 | 45 | 45 | 50 |
B | 165 | 180 | 210 | 250 | 270 |
C | 510 | 665 | 810 | 960 | 1120 |
D | 410 | 510 | 610 | 660 | 840 |
E | 220 | 280 | 310 | 310 | 400 |
F | 40 | 50 | 50 | 45 | 60 |
G | 165 | 205 | 255 | 190 | 240 |
H | 40 | 50 | 50 | 45 | 60 |
J | 140 | 180 | 210 | 220 | 280 |
K | 90 | 110 | 130 | 150 | 170 |
L | 235 | 280 | 325 | 370 | 430 |
Bolt | M20 | M24 | M24 | M24 | M30 |
Bolt Length | 350 | 460 | 460 | 460 | 460 |
P | 45 | 55 | 60 | 60 | 65 |
Quantity | 6 | 6 | 6 | 8 | 8 |
P = bollard base recess mounting depth including grout | |||||
I=1/2 dimension G | |||||
units: mm |
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