The Airmar B744VL is a TRIDUCER® Multisensor that consolidates depth, speed, and fast-response water temperature into a single bronze thru-hull housing. Its dual-frequency ceramic element operates at 50 kHz for wide-area deep-water bottom tracking and 200 kHz for sharp target detail in shallower water. The extended-length stem is engineered for steep-deadrise hulls and thick fiberglass or wood construction, and the included High-performance Fairing maintains reliable bottom tracking at speeds up to 30 knots (34 MPH). Pre-wired with an 8-pin connector for direct Garmin compatibility.

Specifications:

• Power Rating: 600 W
• Frequencies: 50 kHz (45° beamwidth) / 200 kHz (12° beamwidth)
• Max Depth – Low Frequency (50 kHz): 366 m (1,200 ft)
• Max Depth – High Frequency (200 kHz): 206 m (700 ft)
• Functions: Depth, Speed, Temperature
• Housing Material: Bronze
• Acoustic Window: Urethane
• Mounting Style: Thru-Hull with High-performance Fairing
• Hull Material Compatibility: Fiberglass or Wood
• Hole Size Required: 51 mm (2")
• Usable Shaft Length: 121 mm (4.75")
• Max Deadrise Angle: 24° (with fairing)
• Max Vessel LOA: Up to 9 m (30 ft)
• Retractable Housing: Yes
• Self-Closing Water Valve: Yes – minimizes water ingress when swapping paddlewheel insert for blanking plug
• Paddlewheel Cavity Fins: Yes – improves speed accuracy in cross-flow conditions
• Single or Dual Frequency: Conventional Dual Frequency
• Tilted Element: No
• Common Use: Leisure/Yachting, Fishing
• Connector: 8-Pin for Garmin
• Weight: 2.5 kg (5.5 lbs)