Can you identify? Part 2.

[Brutalfly]

I will have to get some more pictures for everybody.
It is at my parents house. Maybe I will see if my dad can send me more pictures or I will take some next time I am there.

 

[UncleBruce]

It could be for a neutral wire on an electrical structure.

 

[K6TIM]

Your right! It a dock anchor point to tie a ship up when the ship is in the docks!