Raymarine DST820 NMEA 2000 Nylon Thru-Hull Smart Multisensor Transducer

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

SKU: #584201788404916
Weight: 2.15 lbs
Brand: Raymarine

Model: E70730
Shipping Dimensions: 4.00" x 10.00" x 8.00"

RETURN POLICY

Last updated February 08, 2021

Thank you for your purchase. We hope you are happy with your purchase. However, if you are not completely satisfied with your purchase for any reason, you may return it to us for store credit only. Please see below for more information on our return policy.

RETURNS

All returns must be postmarked within two (2) days of the purchase date. All returned items must be in new and unused condition, with all original tags and labels attached.

RETURN PROCESS

To return an item, please email customer service at customerservice@marinemaster.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging and the return form provided, and mail your return to the following address:

marinemaster.com

Attn: Returns

RMA #

397 Union Avenue

Laconia, NH 03246

United States

Please note, you will be responsible for all return shipping charges. We strongly recommend that you use a trackable method to mail your return.

REFUNDS

After receiving your return and inspecting the condition of your item, we will process your return. Please allow at least fourteen (14) days from the receipt of your item to process your return.

EXCEPTIONS

The following items cannot be returned:

special order
clearance

For defective or damaged products, please contact us at the customer service number below to arrange a refund or exchange.

Please Note

A 30% restocking fee will be charged for all returns.
Sale items are FINAL SALE and cannot be returned.
returned items must be unopened, unused, undamaged, in original packaging

QUESTIONS

If you have any questions concerning our return policy, please contact us at:

6035564422

customerservice@marinemaster.com