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THE BITTS & BOLLARDS

Updated on January 4, 2015

The bitts are small posts on ships which are used to secure mooring ropes. They are cylindrical in shape & welded to collar plates (also known as stiffeners) & collar plates are welded to the deck. The bollards are larger in size when compared to bitts. The bollards are found on jetties where ships are moored & found on larger ships. The bollards on jetties are also known as Samson posts.

There are various types of bollards. For example Single Bitt, Double Bitt, T-head, Staghorn, Mushroom and Kidney, as well as simple cleats used for smaller vessels

For the sailors the bitts & bollards are not new things. But the idea of writing this article is to explain the inner structure of the bitts or the bollards which exists in ships. In jetties the mounting arrangement of bollard varies.

For example in construction of the double bitt bollard, two cylindrical structures are welded to a cubic structure. They are interconnected from inside using steel plates. I would like to attach some photos to show the inner structure of the bitts.

after the damaged bitt removed

on-board M/T SHERMAC
on-board M/T SHERMAC

full view without the damaged bitt

on-board M/T SHERMAC
on-board M/T SHERMAC

inner plates after the base cylinder's removal

on-board M/T SHERMAC
on-board M/T SHERMAC
on-board M/T SHERMAC
on-board M/T SHERMAC
on-board M/T SHERMAC
on-board M/T SHERMAC

collar plate is visible as well

on-board M/T SHERMAC
on-board M/T SHERMAC

turned upside down of the half cube

on-board M/T SHERMAC
on-board M/T SHERMAC

Nowadays the bollards of jetties are being replaced by quick releasing hooks which are operated partly by manual & electrical system.

quick releasing hook

at port Hambantota
at port Hambantota
at port Hambantota
at port Hambantota

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