Raymarine i50 Tridata System, ST900/P120 & P319 Thru-Hull Transducers

Overview

The Raymarine T70582 is an i50 Tridata instrument system for boats that need depth, speed, log, and water temperature data on one compact helm display. The 3-line i50 display uses large digits, a high-contrast LCD, and red backlighting, so the main readings stay easy to check from the cockpit or nav station during day runs, night passages, and close-quarters maneuvering.

This system is built around a 12 V DC installation, with a 10 V DC to 16 V DC operating range. The display measures 110 mm wide, 115 mm high, and 44 mm deep, carries an IPX6 waterproof rating, and has two SeaTalkNG connections plus direct transducer connections for depth and speed/temperature input.

The package pairs the i50 Tridata display with ST900/P120 speed and temperature sensing and a P319 low-profile depth transducer, giving sail and powerboat owners a practical instrument upgrade for hull-mounted data. It can work as a master display using its own transducers or as a repeater on a Raymarine network.

Key features

• Combines depth, boat speed, log, and water temperature data on a single 3-line instrument display.
• Large LCD digits and red backlighting help with quick reading at the helm, including night use.
• SeaTalkNG network ready, with adaptation possible for NMEA 2000 and legacy SeaTalk systems.
• Built-in transducer interface supports direct connection for depth and speed/temperature sensors.
• 12 V DC nominal supply with a 10 V DC to 16 V DC operating range for typical onboard electronics circuits.
• IPX6 waterproof rating suits exposed helm areas where spray and washdowns are part of normal use.
• Compact 110 mm x 115 mm face size works well where helm panel space is limited or when replacing older instruments.
• Local and group dimming allow brightness control across compatible connected Raymarine instruments.

Installation and setup

The i50 display can be surface mounted, with an optional trunnion mount kit available for installations where a bracketed display is preferred. The 44 mm display depth helps when working with shallow helm pods, cockpit panels, or nav station bulkheads, but the final fit should always be checked against the space behind the panel before cutting.

The ST900/P120 speed and temperature transducer uses a low-profile thru-hull mounting style with a 51 mm hole size and a retractable insert for easier service. The P319 depth transducer is also a low-profile plastic thru-hull unit with a 51 mm hole size, made for depth measurement through fiberglass or metal hulls.

Electrical and system integration

The display draws 45 to 65 mA in typical display-only use and up to 200 mA with a transducer connected, with maximum power consumption listed at 2.4 W when the transducer is connected. That low load makes it a good match for sailboats, fishing boats, and small cruisers where instrument circuits often share limited battery capacity.

Two SeaTalkNG ports let the display sit neatly within a Raymarine instrument network. It can share data with compatible Raymarine autopilots and navigation equipment, and it can be adapted into NMEA 2000 or older SeaTalk installations when the correct cabling or conversion hardware is used.

On-board use

At the helm, this system gives the skipper the core numbers needed for shallow-water approaches, sailing performance checks, fishing runs, and passage-making. Depth and speed stay visible without taking over the space needed for a chartplotter or autopilot control head, while the water temperature readout is useful for fishing, swimming areas, and general trip awareness.

This setup is a strong fit for owners replacing older standalone depth and speed instruments, adding a dedicated data display near the wheel, or building out a Raymarine SeaTalkNG instrument group with a clean, familiar interface.

What’s included

• i50 Tridata instrument display
• ST900/P120 speed and temperature thru-hull transducer
• P319 low-profile depth thru-hull transducer
• Suncover for i70s, p70s, p70Rs, and eS Series style matching
• Front bezel for i70s, p70s, p70Rs, and eS Series style matching
• Gasket
• Suncover for a, c, and e Series style matching
• Front bezel for a, c, and e Series style matching
• 400 mm SeaTalkNG spur cable
• SeaTalkNG blanking plug
• Fixing screws x4
• Documentation