Raymarine M78716 Bronze Speed Transducer

The Raymarine M78716 Bronze Speed Transducer is a through-hull speed and water temperature sensor engineered for reliable performance across wood and fiberglass hull vessels. This marine-grade transducer integrates seamlessly with Raymarine's popular instrument systems, delivering accurate speed-over-ground data critical for navigation, fishing, and vessel performance monitoring.

The M78716 features a 45-foot cable for flexible installation configurations and requires a 2-inch hole diameter for mounting—standard for most modern marine instrument setups. Bronze construction resists corrosion in saltwater environments, a key durability factor for offshore and coastal boaters. The transducer connects to ST60+ and ST290 display systems directly; ST70 integration requires a separate ST70 Speed Pod. This dual-function capability—measuring both speed and water temperature—eliminates the need for separate sensors, reducing installation complexity and cost.

This transducer suits weekend anglers and serious offshore fishermen who need dependable speed readouts for trolling speed control, fuel economy calculations, and SOG-based navigation. Commercial operators and recreational boaters alike depend on this type of sensor for trip logging and performance verification. Whether you're monitoring trolling parameters in a fishing zone or tracking passage speed offshore, accurate speed data translates directly to safer, more efficient boating.

Raymarine speed transducers have become industry standard equipment on vessels ranging from center consoles and offshore cruisers to commercial fishing platforms. Bronze through-hull transducers like the M78716 represent the entry-to-mid-tier option in marine speed sensing, offering straightforward installation and proven reliability without premium-tier complexity.