🧠 What this line actually is

• WF = Weight Forward (power casting)
• 13 = for 13-weight rods (VERY heavy setup)
• I = Intermediate sinking line

👉 This is serious big-game saltwater gear, not typical fly fishing.

⚙️ Key characteristics

🔹 Intermediate sink

• Sinks slowly (not fast like full sink lines)
• Typically around:
  • ~1–2 inches per second

👉 Keeps fly just below surface

🔹 Big Game taper

Designed for:

• huge flies
• strong wind
• aggressive fish

Similar Orvis big-game lines are built for:

• fast shots at moving fish
• strong turnover and loop stability

🔹 Heavy-duty construction

• thick core (handles strong fish)
• saltwater resistant coating
• built for:
  • high tension
  • long runs

🎯 What it’s used for

This is NOT a general-purpose line.

👉 Designed for:

• Tarpon
• Tuna
• Sharks
• GT (giant trevally)
• large offshore species

Brand: Orvis

Fishing Type: Fly Fishing

Line Type: Fly Line

Model: 910H4313

Features: Sinking

Line Memory: Low

Country of Origin: United States