The Airmar B117 is a dual-frequency thru-hull transducer built around a single 50/200 kHz ceramic element housed in a low-profile bronze body. With just 5 mm (3/16") protruding below the hull, drag is kept to a minimum — a practical choice for fiberglass or wood vessels up to 8 m (26') used in leisure, yachting, or fishing applications. The right-angle cable exit reduces clutter and adds protection if the unit is accidentally stepped on, while the included rubber washer helps seal against irregular hull surfaces.

Specifications:

• Power Rating: 600 W
• Single/Dual Frequency: Conventional Dual Frequency (50 kHz / 200 kHz)
• Beamwidth: 45° at 50 kHz / 12° at 200 kHz
• Max Depth: 366 m (1,200') at low frequency / 206 m (700') at high frequency
• Functions: Depth and fast-response water temperature sensing
• Housing Material: Bronze
• Acoustic Window: Urethane
• Mounting Style: Low-profile thru-hull
• Retractable Housing: No
• Hull Material Compatibility: Fiberglass or wood
• Max Vessel LOA: Up to 8 m (26')
• Required Hole Size: 51 mm (2")
• Max Deadrise Angle: Best performance through 7°; accommodates up to 12°
• Optimized For: 0° deadrise installation
• Weight: 0.9 kg (2 lbs.)
• Common Use: Leisure/Yachting, Fishing
• Plastic (P319) and stainless steel (SS60) variants also available for other hull materials

Note: This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.