Raymarine CPT-S In-Hull CHIRP Transducer

The Raymarine CPT-S In-Hull CHIRP Transducer is a depth-only sonar solution purpose-built for non-cored fiberglass hulls on sailing vessels, cruisers, and small powerboats. This in-hull transducer operates at 200 kHz using CHIRP sonar technology, eliminating the need for through-hull installation and delivering straightforward depth readings without the complexity of split-beam or multi-frequency systems.

CHIRP sonar at 200 kHz provides reliable bottom detection and structure identification in a broad range of water conditions. By transmitting across a frequency range rather than a single frequency, CHIRP reduces noise and clutter while improving target definition—a significant advantage over traditional fixed-frequency transducers, especially in shallow to moderate depths. The CPT-S connects directly to Raymarine Element S series units and integrates with Axiom RV, Axiom Pro RVX, and Element HV displays using optional adapters (A80490 for Axiom or A80559 for Element), making it compatible with modern Raymarine chartplotters and fish finders.

In-hull transducers appeal to boaters who want to avoid hull penetration and the maintenance concerns that come with through-hull installations, particularly on wooden vessels or boats where structural integrity is paramount. Anglers fishing lakes and coastal waters benefit from CHIRP's superior noise filtering, while cruising sailors value the simplicity and reliability of depth-only operation for passage planning and anchor monitoring. The CPT-S is ideal for operators who prioritize installation ease and compact mounting without sacrificing the sonar quality that CHIRP technology delivers.

Raymarine's CPT-S fits within the company's contemporary transducer lineup as a straightforward, feature-focused option for smaller vessels and depth-monitoring applications. Its 200 kHz frequency and CHIRP capability position it above entry-level single-frequency alternatives while remaining accessible for boaters who do not require the advanced features of multi-frequency or side-imaging systems.