Scientific Anglers Sonar Stillwater Seamless Density Fly Line

Depth Control Without the Hinge

The Scientific Anglers Sonar Stillwater Seamless Density Fly Line is a blended multi-density sinking line built for precise depth control on stillwaters. Seamless Density construction moves smoothly between densities to eliminate hinging and keep a straight-line connection to the fly. It comes in three sink combinations so you can cover the whole water column, from under the chop down to the bottom.

Scientific Anglers Sonar Stillwater Seamless Density Key Features

• Seamless multi-density taper eliminates hinging between sinking sections
• Intermediate / Sink 3 pairs a 1.25 ips running line with a 3.0 ips head for controlled shallow work
• Sink 3 / Sink 5 pairs a 3.0 ips running line with a 5.0 ips head for the middle of the column
• Sink 5 / Sink 7 pairs a 5.0 ips running line with a 7.0 ips head for dredging deep water
• Overweighted by two line sizes for long leaders and multi-fly rigs
• 10-foot and 20-foot textured hang markers for precise depth counting and lift control
• Colour by density: Light Grey / Dark Green, Dark Green / Charcoal, Charcoal / Black

Best Used For

• Stillwater fishing where you need to find and hold a precise depth
• Long leaders and multi-fly rigs that call for smooth, hinge-free turnover
• Covering the water column from just under the chop down to the bottom

Technologies

• AST Plus – Advanced slickness additive that reduces friction, improves shootability and keeps the line performing longer.
• Welded Loops – Durable welded loops front and back for easy reliable loop-to-loop connections to backing and leaders.
• SA-ID – Printed line identification showing taper, weight and density for quick recognition.
• Sonar – Density-tuned sinking technology that delivers a smooth stable sink profile and consistent depth control through the retrieve.
• Seamless Density – Blended multi-density construction that transitions smoothly between sink rates, eliminates hinging and keeps a straight-line connection to the fly.
• Audible Reference Point (ARP) – Textured band that produces a feelable, audible click through the guides, marking the ideal overhang point for loading the cast.
• Braided Multifilament Core – Supple cold-water core that improves flotation, reduces memory and provides smooth stable casting.

Temperature Rating

• Cold / Moderate – 0°C to 25°C

Target Species

• Trout
• Yellowfish
• Bass
• Barbel
• Carp

Types of Flies

• Nymphs
• Streamers
• Woolly Buggers
• Stillwater Patterns

Line Chart

Head and grain weights are common to all three density combinations; only the sink rates differ.

*Grain weight measured at first 9.1 m.