Airmar P79 Transducer In-Hull NMEA 2000 235 kHz

Overview

Who This Is For: If you run a rigid inflatable boat, a racing sailboat, or any solid fiberglass hull where drilling through the bottom isn't an option, this is your depth transducer. It's also the choice for anglers and boaters who want the convenience of in-hull mounting without the maintenance headaches of a through-hull fitting.

Product Summary: The P79 is an in-hull depth transducer that bonds directly to your hull and connects via NMEA 2000 to your fish finder. Unlike traditional puck transducers that sit loose in a cavity, this one uses a liquid-filled base that channels sound waves efficiently through your hull to the water below. The adjustable angle design keeps your beam vertical no matter your hull's deadrise, so you get clean, accurate depth readings even when your boat is running at speed.

Key Features

• Adjustable to 22° hull deadrise — compensates automatically so your sonar beam stays vertical and you get maximum echo returns at any boat angle.
• No hull penetration — epoxies or bonds directly to your hull, eliminating the need to drill and significantly reducing the risk of leaks or future problems.
• Liquid-filled base design — sound waves travel more efficiently through the bonded liquid medium than through air gaps, delivering sharper depth readings and better overall performance.
• Twist-lock transducer attachment — the separate head element twists onto the base, making installation straightforward and allowing easy service if needed.
• 235 kHz frequency with 11° cone angle — covers moderate depths with good horizontal coverage, ideal for inland lakes and coastal waters where most recreational anglers fish.
• NMEA 2000 network ready — integrates seamlessly with modern fish finders and chartplotters so you have depth data alongside navigation and sonar on a single display.

Specs & What's Included

Compatibility: This transducer works with any NMEA 2000-equipped fish finder or chartplotter. It is recommended for solid fiberglass hulls and will epoxy to aluminum hulls under 0.150" thick. The P79 is the right choice for planing-hull power boats, trailered boats, and rigid inflatable boats where in-hull installation is your only practical option. Not sure if this works with your setup? Call or text us at (833) 831-4077 — we'll tell you straight.

In the Box: Transducer base and element, 20-foot NMEA 2000 cable with connector, and epoxy adhesive.