As Alf correctly identified, it's a (frosty) fairlead.
Is the point of them to protect the paintwork? They certainly don't seem to protect the ropes.
Fazeley to the Samuel Barlow, Alvecote - Now moored near the Samuel Barlow, Alvecote. [image: SAM_8551] Keith. Welcome aboard our working boat Hadar. Pull up a chair and join as we cruise the w...
6 hours ago