Raymarine P79 Adjustable In-Hull Transducer

The Raymarine P79 Adjustable In-Hull Transducer is a 600-watt sonar sending unit designed for anglers and boaters who demand reliable, accurate fish-finding performance without the complexity of through-hull installation. Built as an internal mounting solution, this transducer sits inside your hull, eliminating the need for drilling and external hardware while maintaining the clarity and responsiveness that serious fishermen depend on. Whether you're working shallow coastal flats, freshwater lakes, or offshore structure, the P79 delivers consistent bottom-reading and fish-marking capability for both recreational and professional applications.

The adjustable mounting angle allows you to optimize signal delivery based on your hull design and water conditions, a feature that separates quality transducers from generic alternatives. At 600 watts of power, the P79 produces strong, penetrating sonar pulses capable of reading depths and structure clearly even in thermocline layers or heavy bottom composition. The transducer's compact footprint—measuring 8 x 4 x 10 inches and weighing just 2.8 pounds—fits seamlessly into most in-hull cavities without requiring major boat modifications. Its proven design integrates directly with Raymarine's established SL and hsb2 Plus series echo sounders, ensuring plug-and-play compatibility and eliminating guesswork during installation.

Anglers upgrading aging fish-finders or retrofitting vessels with modern sonar will find the P79 an ideal retrofit component for SL755RC, SL760RC, SL1250, SL1250RC, L755RC, L760, L760RC, L1250, and L1250RC models. The in-hull design eliminates hull drilling risks and works well for fiberglass boats where external transducers can compromise structural integrity. Installation requires a stable mounting surface below the waterline with adequate gel-coat or fiberglass contact; the adjustable bracket accommodates hull angles from 0 to 30 degrees, giving you flexibility in placement. Before ordering, confirm your echo sounder model and available hull cavity dimensions to ensure proper fit and optimal sonar performance on the water.