August 9, 2021
What are marine bollards used for?
Anchoring lines are secured using marine bollards, which are also known as mooring
bollards. Because of the forces of the tides, winds, and currents, it is used as an anchor point
for mooring lines to keep ships from drifting away. To meet mooring standards, marine
bollards are an easy and affordable solution. Mooring lines are attached to it, and it serves as
an anchor in ports and harbours to keep ships away from jetties, quays, dock, and dolphins.
Mooring bollards give a safe and secure mooring due to their high level of stability and
strength.
To make it more difficult for the mooring lines to escape mistakenly, most bollards are
designed with a larger diameter at the top (the head or tip of the structure). Mooring ropes
must have a secure anchor point. Double bollards are used in some designs to cross-fasten
strings. The tighter the bond, the better.
In addition to their size and style, bollards are also categorised by their grade and mooring
capacities. In addition, considering the end user's maintenance needs while selecting a good
bollard design is essential. There should be regular testing and examination of the mechanical
performance of bollards to detect probable deterioration.
Bollards with the T-Head, T-Horn, Kidney and Cleat designs are among the most extensively
used today, as are the Double Bitt, Single Bitt, and Pillar types of bollards, among others.
T-Bollard" Tee Bollard :
The top of the T-head Bollard is shaped like a "T." The ease with which it works and the fact
that it can handle up to 300 tonnes make it famous worldwide. In terms of line load, T-head
bollards are more capable than single-bit or kidney-shaped bollards.
Bollard in the shape of a kidney :
Kidney-shaped Bollards have a straightforward design that works well for low to medium
tidal ranges. If securing mooring lines at high angles is not an issue, kidney-shaped bollards
are a cost-effective alternative. As the narrow lip at the top of the Bollard raises the chance of
an unintended release when numerous mooring lines are shared, this design is not advised.
Double bitt Bollard :
Other names for this Bollard include the Twin Horn or Twin. Having a compact base area
saves room in a small space. For ship mooring and moving, double Bitt bollards are a
superior option when many mooring lines are available.
Pillar Bollards :
Typically, pillar ballasts are utilised for warping operations along docks, where vessels need
to be repositioned for loading purposes, and where tidal ranges are short. They can also be
put on jetties with plates berthing on both sides of the jetty construction because of their 360-
degree line of the load range. Bollards made of pillars may survive extreme conditions.
Stag's hornsBollards :
Staghorn bollards are commonly used on large wharfs for large commercial vessels; they are
not boat bollards. Stag horns accept multiple mooring lines. An additional layer of security is
provided by the complicated design and projecting "horn" of these bollards. In places with
fixed docks and strong tides, or when ships arrive to be unloaded with a lot of cargo, you may
see this Bollard.