Portsmouth’s Round Tower

near the base, they would sling a huge chain across the harbour entrance to keep enemy ships out. There’s example of a link on the other side, it’s big.

[Dione Giorgio]

Beautiful shot. We have the same thing which was always at the ready to close the harbour to prevent enemy maritime attacks.

[Susan Wakely]

Looks a bit choppy.

[Bill]

@sangwann @wakelys Thank you both for the comments.