Raymarine Long Stem BTH Tri With Fairing Block

The Raymarine Long Stem BTH Tri with Fairing Block is a professional-grade transducer assembly designed for anglers and boaters who demand reliable sonar performance in both saltwater and freshwater environments. This transducer is engineered for through-hull mounting on vessels where the transom or hull geometry requires extended stem length and low-profile fairing to minimize drag and turbulence.

The long stem design accommodates thicker hull applications where standard transducers would sit too shallow, ensuring proper water contact and beam alignment for optimal sonar clarity. The integral fairing block streamlines water flow around the transducer head, reducing noise artifacts and cavitation bubbles that degrade signal quality at cruising speeds. BTH (Bronze Through-Hull) construction provides corrosion resistance and durability in saltwater conditions.

This tri-frequency transducer is ideal for precise bottom mapping, structure location, and fish-finding at various depths, making it suitable for center consoles, sport fishers, or cruising sailboats. It integrates seamlessly with Raymarine sonar systems and legacy marine electronics platforms that support standard transducer connectors, providing flexibility for different depths, bottom types, and target species.