Airmar UDST800 Smart, N2K, Bronze HSG, DST
$1,635.00 $1,504.20
UDST800 Smart, N2K, Bronze HSG, DST
Airmar’s patented UDST800 just turned your maintenance time into more cruising time—and made your boat smarter too. Get ultrasonic speed, depth, and temperature in a single-thru-hull housing with no moving parts. Say goodbye to paddlewheel maintenance and hello to Smart™ technology, from the company who invented the Smart™ Sensor.
Features:
- Ultrasonic speed, depth, and fast-response water-temperature sensing
- Single housing with no moving parts—no paddlewheel
- Precise readings at high speeds are ideal for powerboats, cruising, and sailing
- Advanced filtering and sampling rates for increased accuracy at all speeds
- Adapts automatically to boat speed, water depth, and water clarity, keeping speed accuracy consistent
- 235 kHz frequency prevents interference with other echo sounders on the vessel
- Retractable plastic insert in a low-profile plastic housing with water valve
- Also available in a bronze (B617V) or stainless steel (SS617V) housing
- Retrofits into Airmar’s P617V, B617V or SS617V housing
- Airmar's Smart™ Sensor technology
Specifications:
- Functions: Depth, Speed, Temperature
- Mounting Style: Low Profile Thru-Hull
- Power Rating: N/A
- Protocol Output: NMEA 2000®
- Housing: Plastic
- Hull Material: Fiberglass or metal
- Hole Size: 51 mm (2"), Stainless steel housing in metal hull—57 mm (2-1/4")
- Retractable housing: Yes
- Acoustic Window: Urethane
- Cable-Length: 6 m (20') NMEA 2000® cable
- Common Use: Cruising/Racing Sailboats, Leisure/Yachting, Fishing
- Data Rate: Up to 10 times per second
- Max Depth: 0.6 m (2') to 100 m (330')
- NMEA 2000 LEN: 8
- Retrofits: Retrofits into AIRMAR P617V
- Speed Range: 0.1 to 50 knots (0.1 to 57 MPH)
- Temperature Accuracy: ±0.5°C (±1.8°F)
- Tilted Element: No
- Usable Shaft Length: 57 mm (2.25")
- Voltage: 9 to 16 VDC
- Water Temperature: -10° to 40°C (14° to 104°F)
- Weight: 1.4 kg (3 lbs)
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.


⚓ Smooth Sailing Shipping
Enjoy FREE standard shipping on most orders over $250 within the continental U.S. (excl. heavy/oversized/hazardous items).
We ship via UPS, FedEx, and USPS . Orders are processed in 1–2 business days with typical delivery in 1–5 business days .
🧭 Track The Voyage
You’ll receive tracking info by email once your order ships. If your package is marked “delivered” but not received, please wait 48 hours then reach out to our team.
🛟 Hassle-Free Returns & Exchanges
Returns accepted within 30 days of delivery. Items must be unused and in original packaging.
- Mistaken or damaged cargo? We’ll handle return shipping.
- Changed your course? Return shipping is on you.
- Report defects or damage within 7 days for a free exchange.
💰 Anchor Your Refund
Refunds go back to your original payment method within 5–7 business days after inspection.
📨 Contact the Crew
Questions about your order? Drop anchor at sales@marineelec.com .