Raymarine DST820 NMEA 2000 Nylon Thru-Hull Smart Multisensor Transducer
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DST820 NMEA 2000 Nylon Thru-Hull Smart Multisensor Transducer
Featuring Airmar’s high-performance Gen2 paddlewheel, the DST820 delivers unmatched speed-through-water accuracy - providing precise start-up data below 0.3 knots, linear accuracy from 0.6 knots, and stable, reliable readings all the way up to 45 knots.
Whether you’re a day sailor, weekend cruiser, or tactical racer, accurate speed-through-water (STW) data helps you fine-tune sail trim and rig balance for maximum performance. For racers, precise STW readings enable accurate velocity made good (VMG) and target speed calculations on racing instruments, ensuring every tactical decision is data-driven.
Together, the DST820 and Airmar’s CAST™ app make speed calibration simpler than ever. The free CAST app provides powerful calibration tools—once only available through costly PC-based software—now instantly accessible from your smartphone or tablet. Choose from basic or advanced calibration options to suit your needs.
Beyond speed, the DST820 measures depth and water temperature, and provides a 5.7 Hz (5× per second) speed output with improved resolution. Its integrated attitude sensor delivers heel and trim data, enabling heel-compensated speed calibration across multiple heel angles and speed ranges—fast, intuitive, and completely independent of onboard instruments.
With depth tracking from 0.5 m (1.6 ft) to 100 m (328 ft), the DST820 also provides reliable depth data to help ensure you never run aground.
The DST820 is compatible with Raymarine i50, i60, i70, and Alpha instrument systems, as well as Axiom and Axiom 2 chartplotters. The transducer is fitted with a standard NMEA 2000 DeviceNet Micro-C connector and can readily adapt for SeaTalk NG using adapter cable A06079, sold separately.
Features:
- All-in-one depth, speed through water, and water temperature
- Integrated heel-and-trim (attitude) data
- High-resolution speed output with improved update rate
- Simple NMEA 2000 network connectivity
- Wireless calibration and configuration using the Airmar CAST app
- PSTI-compliant for cybersecurity
30-Day Returns & Fast Shipping
Most eligible items may be returned within 30 days of delivery. Items must be unused, uninstalled, and returned in their original condition with all original packaging, accessories, hardware, and components.
Returns caused by ordering the wrong item, incorrect vehicle or product fitment, incorrect size or quantity, accidental purchase, change of mind, or other customer error are subject to a minimum 20% restocking fee. Depending on the condition of the returned product, packaging, missing components, or other factors affecting resale value, the restocking fee may be increased up to a maximum of 50% of the product price. Customer-error returns may also be subject to return shipping costs.
Restocking fees do not apply when we verify that the wrong item was shipped by us or that the product arrived damaged or defective through no fault of the customer. Please contact Resilient Consulting before returning any item so we can provide return authorization and instructions.
Orders are processed and shipped as quickly as possible. Delivery dates are estimates and may be affected by carrier delays, weather, holidays, incorrect addresses, or other circumstances outside our control. Tracking information will be provided when available.
Please verify vehicle, RV, marine, or equipment compatibility before placing your order. Installed, used, modified, damaged, incomplete, or otherwise non-resalable products may receive a reduced refund or may not be eligible for return.