Raymarine i40 Depth Display System w/Thru-Hull Transducer

Description

The Raymarine i40 Depth System with P7 through-hull transducer is built for boats that want a permanent depth sensor and a dedicated depth display. The segmented LCD keeps bottom clearance visible while the P7 retractable transducer sits through the hull. This arrangement suits cruising sailboats, cabin cruisers, and fiberglass boats where a protected through-hull installation makes sense.

The display draws only 35-50mA from the 12V system, while SeaTalk carries the depth data to compatible Raymarine instruments. The P7 uses a 51mm hull opening and includes a 30-foot shielded cable, so installation needs careful access, sealing, and sensor placement. The i40 is a depth instrument, not a chartplotter or imaging fishfinder. It provides depth alarms and memory, but not a detailed view of the bottom.

Key Features

• Segmented LCD with backlight – Keeps the depth reading visible without occupying a main MFD page.
• P7 retractable through-hull transducer included – Provides a permanent depth-sensing installation.
• 51mm hull opening – Defines the required through-hull installation size.
• 30-foot shielded cable – Provides useful reach between the sensor and display.
• Shallow and deep depth monitoring – Helps the operator watch bottom clearance.

Who Is This For?

This Raymarine depth system suits cruising sailboats, cabin cruisers, and 20- to 45-foot fiberglass boats that can accept a permanent through-hull sensor. It is not ideal for trailer boats or hulls where drilling a 51mm opening is unsuitable, and it does not provide charting or imaging sonar.

Compatibility

Confirmed components include the P7 retractable through-hull depth transducer, SeaTalk, SeaTalkng through a converter, and the supplied 30-foot sensor cable. The supplied information does not identify direct Garmin, B&G, Simrad, NMEA 2000, NMEA 0183, radar, or autopilot compatibility. No named incompatible system was provided; verify hull thickness, sensor position, and Raymarine network requirements before installation.

Technical Specifications

• Brand: Raymarine
• Model: i40 Depth System with through-hull transducer, E70142
• Display: Segmented LCD with backlight
• Transducer: P7 retractable through-hull included
• Hull opening: 51mm / 2 inches
• Cable: 30 feet / 9m
• Networking: SeaTalk and SeaTalkng via converter
• Voltage: 12V DC
• Power draw: 35-50mA
• Water rating: IPX6 display and IPX8 transducer

Warranty & Support

Raymarine provides a 2-year standard warranty, or 3 years with registration as listed in the supplied specifications. Warranty exclusions and service procedures were not provided.

The i40 through-hull system is the better long-term choice when a permanent depth sensor is acceptable. Compared with the transom version, it keeps the transducer protected below the hull and avoids the turbulence or impact risk of a transom mount. The trade-off is installation effort: cutting, sealing, and positioning the 51mm sensor must be done correctly.