Scientific Anglers Sonar Titan Triple Density INT / SINK 3 / SINK 5
The Scientific Anglers Sonar Titan Triple Density is a specialized fly line designed for streamer fishing, particularly when using heavy flies or sinking techniques. Here’s a breakdown of its key features:
Key Features:
1. Triple Density Core – The line has three different sink rates along its length:
– Front section (INT/Sink 3/Sink 5) – Typically the first 20-30 feet sink at different rates (Intermediate, Sink 3, or Sink 5) for controlled depth presentation.

– Running line – The rear portion is often a floating or intermediate line for easier mending and line control.
2. Versatile Sinking Options – Available in different configurations:
– INT/Sink 3/Sink 5 (Intermediate, Sink 3, Sink 5) – Allows for a controlled descent, ideal for varying water depths.
– Sink 3/Sink 5/Sink 7 – For deeper, faster-sinking applications.
3. Aggressive Taper – Designed for powerful, long-distance casts with heavy streamers.
4. Coldwater Coating – Stays supple in cold conditions, making it great for trout, bass, and pike fishing.
5. Bright Tip (Orange or Chartreuse) – High-visibility for tracking strikes and line position.
Best Uses:
– Streamer fishing (big flies for trout, bass, pike, etc.)
– Deep nymphing (when a fast-sinking line is needed)
– Stillwater fishing (where controlled depth is crucial)
Sink Rate Comparison:
| Type | Sink Rate (inches per second) | Best For |
|———-|———————————-|————–|
| INT | ~1.5″ – 2″ | Shallow water, slow sink |
| Sink 3 | ~3″ – 3.5″ | Moderate depth |
| Sink 5 | ~5″ – 6″ | Deep, fast-moving water |
Who Should Use It?
– Anglers targeting big predatory fish with streamers.
– Those needing precise depth control in rivers or lakes.
– Fishermen who prefer high-performance sinking lines with multiple densities.
Would you like recommendations on rod pairing or leader setups for this line?
The Scientific Anglers Sonar Titan Triple Density is a specialized fly line designed for streamer fishing and deep-water applications. It features a triple-density sinking design, allowing it to sink quickly and maintain a controlled depth while retrieving large flies. Here’s a breakdown of the INT, SINK 3, and SINK 5 variants:
Key Features:
– Triple-Density Core: Combines three different sink rates in one line for a controlled, consistent sink profile.
– Aggressive Taper: Optimized for turning over bulky streamers and articulated flies.
– Low-Stretch Core: Enhances sensitivity and hook-setting power.
– Durable Coating: Resists abrasion for long-lasting performance.
Line Variants:
1. Sonar Titan Triple Density INT (Intermediate)
– Sink Rate: ~1.5–2.0 inches per second (IPS)
– Best For: Shallow water, slow-sinking presentations, or when fish are suspended.
2. Sonar Titan Triple Density SINK 3
– Sink Rate: ~3.0–3.5 IPS
– Best For: Medium-depth fishing, moderate currents, and controlled streamer retrieves.
3. Sonar Titan Triple Density SINK 5
– Sink Rate: ~5.0–6.0 IPS
– Best For: Deep, fast-sinking applications, heavy currents, or when targeting bottom-hugging fish.
Ideal Use Cases:
– Streamer Fishing: Excellent for swinging or stripping large flies.
– Deep Nymphing: Gets flies down quickly in deep pools.
– Stillwater Fishing: Effective for lake trout, bass, or pike in deeper zones.
Pros:
✔ Fast, controlled sink rate
✔ Excellent turnover for heavy flies
✔ Durable construction
Cons:
✖ Not ideal for floating or shallow presentations (except INT)
✖ Requires proper retrieval technique to avoid snagging bottom
Final Thoughts:
If you need a fast-sinking line for streamers or deep nymphing, the SINK 3 or SINK 5 are great choices. The INT is better for shallower or suspended fish. All three models excel in precision and power, making them a favorite among bass, pike, and trout anglers fishing deep water.
Would you like recommendations on pairing this line with specific rods or reels?