Raymarine M78717 Retractable Transducer

Discover the reliability of the Raymarine M78717 retractable transducer, a bronze thru-hull design engineered for precise depth readings in demanding marine environments. Operating at a powerful 200 kHz frequency, this transducer delivers clear, accurate data to help you navigate shallow waters, track bottom structure, and enhance your boating safety without compromising on performance.

Why Choose a Retractable Bronze Transducer?

Retractable transducers like the M78717 stand out for boaters who frequently beach, trailer, or operate in low-clearance areas. The sturdy bronze housing resists corrosion from saltwater exposure, ensuring long-term durability even in harsh coastal conditions. Unlike fixed-mount options, its retractable mechanism lets you pull it up quickly, protecting the unit from damage while maintaining a streamlined hull profile when deployed.

At 200 kHz, it provides excellent resolution for depths up to several hundred feet, ideal for inshore fishing, coastal cruising, and everyday navigation. The narrow beam width concentrates energy for detailed bottom contours, helping anglers spot fish-holding structures or debris that wider-frequency units might miss.

Key Performance Advantages

• Superior Depth Accuracy: Single-frequency 200 kHz operation cuts through water column noise for reliable readings in choppy seas or murky waters.
• Corrosion-Resistant Build: Bronze construction thrives in marine settings, outperforming plastic alternatives in longevity and stability.
• Easy Retraction: Simple manual lift reduces wear and tear, perfect for trailered vessels or beaching routines.
• Streamlined Installation: Thru-hull mounting minimizes drag, preserving your boat's speed and fuel efficiency.
• Versatile Applications: From kayak fishing upgrades to larger center consoles, it adapts to various hull types.

Optimizing Your Setup for Best Results

To maximize the M78717's potential, position it forward on the hull, deadrise-matched for minimal air entrainment. Pair it with quality marine sounders to leverage its full output power, which handles high-speed operation without cavitation issues. Regular hull cleaning around the face keeps acoustic performance sharp, preventing marine growth from dulling signals.

Boaters report noticeable improvements in target separation during structure scanning, making it a favorite for bottom bouncing rigs or live bait fishing where every inch of depth matters. Its robust design also withstands the vibrations of rough-water runs, delivering consistent data when you need it most.

Real-World Marine Insights

In practical use, this transducer shines on vessels with variable draft needs, like flats boats chasing tailing reds or offshore day boats dodging shoals. The 200 kHz sweet spot balances range and detail, outperforming lower frequencies in shallows while avoiding the clutter of multifrequency setups. Integrate it into your electronics array for a seamless chartplotter display, turning raw depth info into actionable waypoints.