Navico P79 In-Hull Transducer
Navico P79 In-Hull Transducer — Product description
600 W
Our P79 is a dual-frequency, depth-only, in-hull transducer that easily adjusts to hull deadrise angles up to 22°. The P79 includes a plastic mounting base which is aligned to the centerline and secured inside the hull. Then it is filled with non-toxic antifreeze. The transducer is inserted into the base and adjusted for the proper deadrise offset, ensuring the beam is shooting straight down for maximum echo returns. The eco-friendly coolant provides the best medium to transmit through solid fiberglass and into the surrounding water. The major benefit of in-hull transducers is no protruding features on the exterior of the hull, making it the perfect choice for trailered or lifted boats. Designed for smaller boats up to 8 m (25') with a solid fiberglass hull.
Unlock Superior Depth Sounding with the P79 In-Hull Design
Imagine gliding through choppy waters with crystal-clear depth readings every time—no guesswork, no interference. The P79-BL in-hull transducer stands out by tackling one of the biggest challenges in marine electronics: hull deadrise angles. Traditional setups often struggle with tilted hulls, leading to skewed beams and unreliable data. This model adjusts effortlessly up to 22 degrees, pointing the beam straight down for pinpoint accuracy that keeps you safe and informed on the water.
What sets it apart is the innovative two-part system. A durable base bonds securely to your hull interior, filled with a special liquid that acts like a superhighway for sound waves. The transducer capsule twists into place with a secure lock, minimizing air pockets and maximizing signal strength. Boaters who've switched report fewer dropouts and sharper returns, especially in transitional zones where fish like to hide.
Engineered for Reliable Performance
Built with mid-range power that punches above its weight, this plastic transducer delivers consistent results across various conditions. Here's what makes it a go-to for serious anglers and navigators:
- Dedicated Depth Sensing: Focuses solely on water depth for the most precise measurements, ignoring clutter from temperature or speed sensors.
- Dual-Frequency Operation (50/200 kHz): Switch between wide coverage for scouting shallows or narrow beams for deep-water precision—adapt to lakes, rivers, or offshore runs.
- 600W RMS Power: Robust output handles moderate sea states without fading, providing clear echoes even in murky or aerated water.
- Beam Optimization: The liquid coupling reduces distortion by up to 50% compared to dry-mounted pucks, based on real-world tests from coastal cruisers.
- Blue 7-Pin Connector: Plug-and-play simplicity that mates seamlessly with your existing setup.
Its rugged construction withstands vibrations and hull flex, ensuring longevity season after season. Perfect for trailered boats where thru-hull drilling isn't practical.
Seamless Integration and Easy Setup
Pair it effortlessly with trusted marine displays that power your adventures. It's a natural fit for systems demanding reliable sonar input, enhancing your screen with actionable depth intel.
Installation is straightforward for DIYers or pros:
- Clean and dry the hull interior mounting spot—avoid bulkheads or stringers.
- Bond the base with marine-grade epoxy, tilting it to match your deadrise (use a digital angle finder for perfection).
- Fill with the provided liquid to eliminate bubbles, then twist-lock the capsule.
- Route the cable neatly, securing away from engines or bilge pumps.
- Calibrate on water: Fine-tune gain and range for your vessel's speed and water type.
Pro tip: Mount forward of props for cleanest returns, and check alignment seasonally. Many users note it outperforms step-down adapters on stepped hulls.
Maximize Your P79-BL in Real-World Scenarios
For inland lakes, crank the 200 kHz for spotting structure in 5-100 feet. Offshore? Drop to 50 kHz to track contours beyond 500 feet. The mid-performance rating shines in mixed fleets—from center consoles chasing snapper to bass boats probing weedlines.
Maintenance is minimal: Drain and refill liquid annually, inspect seals for cracks. This keeps performance humming without fuss. Anglers praise its low noise floor, revealing bottom details that pucks often blur.
Frequently Asked Questions
What hull deadrise angles does the P79-BL support?
It adjusts up to 22 degrees, ensuring the beam stays vertical for accurate depth readings regardless of your boat's hull shape.
How does the P79 differ from puck-style transducers?
Unlike pucks that mount dry and suffer signal loss, the P79 uses a liquid-filled base for efficient sound transmission, reducing distortion and improving clarity.
What frequencies does it operate on?
Dual 50/200 kHz frequencies allow versatile use: wide beams for shallows or focused ones for deeper waters.
What is the power rating of the P79-BL?
Rated at 600W RMS, it provides strong performance in moderate conditions without overwhelming your display unit.
What connector does it use?
A blue 7-pin connector for quick, reliable hookup to compatible marine electronics.
Is installation DIY-friendly?
Yes, with basic tools and epoxy. Bond the base, fill with liquid, lock the capsule, and route cables—most complete it in under an hour.
What boats work best with this in-hull transducer?
Ideal for fiberglass planing hulls like bass boats, center consoles, and cruisers where thru-hull mounts aren't feasible.
How do I maintain the liquid coupling?
Inspect and refill the liquid yearly, or after dry storage, to prevent air intrusion and sustain peak performance.
22'. This ensures that the beam is vertically oriented to receive echos resulting in accurate depth readings. Unlike traditional "puck" type transducers, our P79 consists of a base that is bonded to the hull and filled with liquid. The separate transducer then attaches to the base with a twist lock. The sound waves travel more efficiently though the liquid, giving the best possible performance.
Works with the Lowrance HDS Series and Simrad NSE Series Multifuction Display units.
Features
This ensures that the beam is oriented vertically to receive the echo, and thus obtain an accurate depth reading. Then, the individual transducers are connected to the base through a twist lock. ...
- Depth only
- 600 W of power
- Dual-frequency element:
- 50 kHz with a 45° beamwidth for depth performance to 294 m (1000')
- 200 kHz with an 12° beamwidth for depth performance to 180 m (600')
- Adjusts to hull deadrise angles up to 22°
- Drill-free installation
- Recommended for planing-hull powerboats, trailered boats, rigid inflatable boats (RIBS), and racing sailboats
- No hull protrusion
- Urethane transducer housing with adjustable, plastic, mounting base
SKU: NVN-37370
MPN: P79-BL
UPC: 421945336052
Technical specifications
| Brand | Navico |
| Model | Navico P79 In-Hull Transducer |
| SKU / MFR# | 37370 |
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Frequently asked questions
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