Skip the bleach
, seriously. Ditto on anything resembling a fabric
softener. As some fibers, like aramids for example, have serious bleach allergies; it'll eat'em up. And some of these chemicals are also Bad Juju for the line's proprietary coatings (below).
- Sorry, Ann, Jim, et. all :-)
And personally, I pass on washing any lines with parallel fibered internal cores. Particularly the ones which have cores that are encased in a proprietary fibrous tape, such as StaSet-X. As I'm thinking that washing such lines in a machine, might damage the coils & stacked wrap of their internal structures. That, or possible hockle or kink such cores.
Also, both before & after washing, make sure that you're lines are fully free of internal hockles or twists. As you don't want to set up the lines for a preventable, early demise. And it's good practice to check all lines for such regularly anyway.
Otherwise, washing running rigging
in the machine's fine. I've always just used a mild detergent in the washing machine. Sometimes dish soap, or even baby shampoo. And you shouldn't have a problem in most types of washers.
Though if you're worried about them jamming the spindle, try seizing the loops of line together into a large O-shaped coil, in several places around their perimeter. And if you like, pad the shackles with an old sock folded over several times, & seized in place.
You're trying to get the salt
& dirt out of the fibers of the line, as that's what eats them up when under load, due to internal abrasions. Think of the salt crystals & dirt as tiny belt sanders inside of the line. So to get the stuff out, some agitation while their being washed helps.
However, if you wash them frequently or aggressively, you'll wash off/out the protective coatings which are built into them. Such as the Samthane on Samson
It's what makes them shiny & slippery; internally, & externally. With a big part of it's function being to enhance the abrasion resistance of the line, between the core
& cover, as well as external sources of wear.
As, for example, New England
Ropes touts the coatings on their anchor
rodes as being a key factor in what makes them significantly more abrasion resistant than other manufacturer's lines.