Rusty details at the port

Good morning all have a great day or if your reading this in the evening I hope you have had a good day

On a recent walk I took around the port, and what caught my eye on this walk was all the cool rusty detail around the port, not surprising by the salty sea water of course, now some find rust unattractive, but I find it quite cool and perhaps you may also after seeing these photos

Starting with this number 39 on the side of a metal structure floating and tied up at the port.

rusty detail at the port.jpg

^{Sony A7iv 76mm F8 1/250 Sec ISO 160}
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And on top of this platform were these things, I am not sure what they purpose is but they caught my eye

rusty detail at the port-2.jpg

^{Sony A7iv 171mm F8 1/250 Sec ISO 100}
^{Click here to view larger}

And on one of the commercial was this change and pulley all with nice rusty detail.
Many of the fishing boats have pulleys on them I am guessing there for lowering and pulling up nets or traps in and out of the ocean

rusty detail at the port-3.jpg

^{Sony A7iv 82mm F8 1/250 Sec ISO 100}
^{Click here to view larger}

The other thing that caught my eye and always does are the ropes tying the boats up to the port, I got a few shots of them where they were tied up to rusty, Hmmm what are those things called, I think a small one may be a cleat but is that what these larger ones on the pier are called, I have no idea do feel free to enlighten me.

rusty detail at the port-4.jpg