Raymarine i40 Speed Display System w/Transom Mount Transducer

Upgrade your boating experience with the Raymarine i40 Speed Display System, a compact powerhouse that delivers precise boat speed, trip logs, and water temperature readings right at your fingertips. Perfect for powerboaters, sailors, and yacht enthusiasts who demand reliable performance without the clutter of bulky gauges, this system combines a sleek 3.5-inch LCD display with a robust transom-mount transducer for accurate speed-through-water measurements. Whether you're racing, cruising, or fishing, the oversized digits and red backlight ensure you never miss critical data, even in the glare of midday sun or the dimmest twilight.

Why the i40 Speed Display Stands Out on the Water

In a world of generic marine electronics, the i40 shines by prioritizing simplicity and integration. Unlike basic analog speedometers that fade over time or require constant calibration, this digital instrument pulls data directly from its dedicated transducer or shares it seamlessly across your SeaTalk network. Imagine glancing at max speed after a thrilling run, tracking trip distance for fuel planning, or monitoring sea temp to find that perfect fishing spot—all from one intuitive dashboard. Boaters rave about its low power draw, which extends battery life on long outings, making it a smart pick for RIBs, day sailors, and weekend warriors alike.

Expanded Features for Everyday Boating Adventures

• Precision Speed Tracking: Displays current, average, and maximum speed through water, helping you optimize performance and stay within no-wake zones effortlessly.
• Comprehensive Logging: Built-in trip and total log functions let you record distances without manual notebooks, ideal for regattas or extended voyages.
• Water Temperature Insight: Real-time sea temp readings assist with navigation, fishing, and engine performance monitoring.
• Superior Visibility: Extra-large LCD digits with red backlighting cut through fog, spray, and low light, outperforming dimmer monochrome displays.
• Network Savvy: Acts as a transducer host or repeater, syncing with autopilots, multifunction displays, and other instruments for a unified helm setup.
• Rugged Build: IPX6 waterproofing shrugs off heavy spray, while the compact dimensions (5.04" W x 2.83" H x 1.4" D) fit snugly on any console.

Real-World Benefits That Save Time and Hassle

Boat owners know the frustration of unreliable speed data—overestimating throttle or missing optimal trim can waste fuel and fun. The i40 tackles this head-on with three-button operation that's glove-friendly and intuitive, even in rough seas. Its ultra-low power consumption (under 0.4W) means less drain on your house battery during anchor watches or multi-day trips. Plus, the included surface-mount kit and optional trunnion bracket offer flexible installation, blending seamlessly with modern Raymarine aesthetics like a-Series or e-Series screens. Skip the guesswork: this system empowers confident decision-making, from plotting courses to competing in club races.

Effortless Installation and Setup Tips

Setting up the i40 is straightforward for DIYers or pros. Start by mounting the transom transducer in clean, turbulence-free water flow, typically 18-24 inches off the keel line for accuracy. Route the cable through existing deck glands to the display, powering it via SeaTalk for networked bliss. Calibrate once for your hull type—sail or power—and you're set. Pro tip: Angle the transducer parallel to the waterline at speed for pinpoint readings, and use network dimming to match your cockpit lights for night ops. Surface or bracket mount as needed; its low profile keeps sightlines clear.

Compatibility and Expansion for Growing Setups

Fully SeaTalk-enabled, the i40 plays nice with Raymarine autopilots, chartplotters, and wind instruments, repeating data or feeding it upstream. It's not just a standalone gauge—build a full sensor suite by daisy-chaining with depth or compass units. For newer boats, adapters bridge to NMEA 2000, future-proofing your investment. Compact enough for kayaks to keelboats, it enhances any helm without dominating space.

Frequently Asked Questions

Equip your vessel with the i40 Speed Display and transform raw data into actionable insights. Reliable, responsive, and ready for any adventure—it's the edge every skipper needs.