The Raymarine RV-400 Stainless Steel Thru-Hull transducer packs RealVision 3D, CHIRP DownVision, SideVision, and High Frequency CHIRP sonar into a single low-profile stainless steel housing. Built for fiberglass, wood, or metal hulls, it includes an isolation kit to prevent galvanic corrosion when installed against dissimilar metals. A built-in AHRS automatically compensates for vessel motion, delivering stable, sharp imagery through waves, swells, and while maneuvering — making it a strong fit for both inboard and outboard powerboats.

Specifications:

• Sonar technologies: RealVision 3D, CHIRP DownVision, SideVision, High Frequency CHIRP
• Housing material: Stainless steel, low-profile thru-hull design
• Compatible hull materials: Fiberglass, wood, metal
• Includes isolation kit to eliminate galvanic corrosion risk with dissimilar metal hulls
• Suitable for inboard and outboard powerboats
• Available as a single transducer for flat hulls or as a split pair with Y-cable for deadrise angles up to 26°
• Built-in Attitude and Heading Reference System (AHRS) for automatic vessel-motion compensation
• 0° mounting angle