You don't use any acid (vinegar) at all in your brine?
I like salt, bit of sugar and some vinegar...the vinegar is a powerful bacteria killer during the drying porcess and adds a little zingy tang to the taste.
sugar aids evaporation once the salt has drawn moisture to the surface. It doe snot take very much, but salt crystals that have sugar near them go all porcupinish and have much more surface area, thus they are better at wicking away and evaporating moisture.
As anyone that has had clothes soaked in seawater knows, salt water actually keeps cloth moist for longer...You can thus aid your salt water laundry practices on board by adding a 1/4cup of sugar (or better yet using sugar soap) with the salt water rinse. Clothes will dry faster and feel nicer. (Once dried, the clothes can be shaken out breifly, the very spindly nature of the effected crystals means that all those little spines snap off very easily, leaving behond much less salty clothes!
There you go, fish preservation and laundry tips all in one!
By the way. I also have a Russian background, having been born in Odessa. Somehow the idea of crusing along with 200 little fish hanging to dry from your topping lift as you sail along fits better in the Black Sea then it does in most other places.