Secondary tow wire size

I have worked on many vessels that have a smaller secondary wire, I think mostly the reason was cost primarily but seems to me
that a one size larger and heavier secondary
wire would perform better which equates
to less wire needed to be put out to get the
desired catenary and in most instances
this drum has no level winder , the larger
Wire is easier to wind up uniform without
the level winder especially on a tandem tow
where a smaller wire may dictate how long
the tandem tow will be based on its surge
and it being the forward barge in tow.
Thoughts.

Having the wires the same diameter makes everything easier. The company buys one diameter, and then plugs it in to a boat where necessary. A good long wire that gets damaged can be trimmed off and put on the short drum for tandem/emergency use. I love a nice fat wire.

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Have worked on quite a few boats with the same size wires where the company usually
has a number of the same size boats, have
worked for some companies with many sized
boats also, hate a tow wire below 2” and been on some boats that had that and an
1.75” for secondary wishing I had a 2.25”
for the secondary and first barge in tandem.
This is all with less than a real heavy chain bridle as well.