Hi Jim,

I don't know of any data that is available to the public. SA makes sink lines for fresh water and salt water. I suspect they have tested the lines in salt water to determine the sink rate.


Sinking Fly Lines Mastery Series Saltwater Lines


Specialty Taper
  • Sinks below the surface, beneath wind and chop
  • For delicate low-visibility deliveries in shallow water
  • Stiffer for fast shooting to distant fish
  • Also excels for other tropical shallow-water species
Sink Rate:
  • 1.5-2.0 ips