Help on AOP carrier

[mudeng]

In the hope someone can help, I need details or close up photograph of the mounting frame for the cable reel, carried on AOP carriers.
I believe the central shaft was square, and there must have been a crank handle for reeling back the cable, and some sort of guide for the cable.
Any and all information is welcome.

As an added question, seeing the restored conger in Holland, and other carriers, is there a purpose for the holes in the top plate of the mud scraper? Was anything fitted there?

Thanks for any help.


George Moore.