Raymarine i40 Bidata Display System w/Thru-Hull Transducers

Raymarine i40 Bidata | Dual Speed and Depth Logic

The Raymarine i40 Bidata Display System solves the challenge of multi-parameter monitoring in compact helms by pairing a dual-line digital display with thru-hull depth and speed transducers. Its core engineering leverages a consolidated SeaTalk interface to render depth, speed, log, and sea temperature on a single, high-fidelity interface. By prioritizing a dual-sensor configuration, the Bidata effectively eliminates the visual clutter of separate gauges while maintaining a dedicated visual roadmap for critical underwater telemetry. This mechanical efficiency provides coastal sailors and powerboaters with a sub-second refresh rate for trip logs and depth alarms, serving as a versatile command node for vessels where dashboard real-estate is at a premium.

In demanding commercial environments, you’ve got to prioritize the cable management of the dual transducer leads to prevent signal cross-talk between the 200kHz depth pulse and the paddlewheel’s magnetic speed sensor. I’ve witnessed data corruption when both leads are bundled tightly with high-current AC wiring; maintain a 6-inch separation. Ensure both thru-hull housings are torqued correctly and sealed with marine-grade sealant to prevent weeping. It’s also wise to check the paddlewheel for debris after traversing shallow kelp beds, as the Bidata’s internal logic relies on mechanical rotation to calculate the speed-through-water (STW) data required for your vessel’s total distance log accuracy.

Technical Specifications

• Display: Dual-line high-contrast digital LCD.
• Transducers: Includes Depth and Speed thru-hulls.
• Functions: Depth, Speed, Log, and Temp.
• Interface: SeaTalk certified networking logic.
• Alarms: Shallow and Deep water alerts.
• Power: Ultra-low current draw consumption.
• Rating: IPX6 rated waterproof protective housing.