The Garmin GPSMAP 8612 is the 12-inch full-HD IPS touchscreen network chartplotter for serious cruisers and sport-fishing operators who want to handpick their sonar separately rather than buy a sonar-included combo. Preloaded Garmin Navionics+ coastal charts and inland mapping with Auto Guidance+ planning. Premium-performance processor for fast map drawing, smooth video distribution, and superior networking. Multi-display flat-mount or flush-mount for sleek glass helm builds. NMEA 2000, Garmin Marine Network, ANT, and Wi-Fi connectivity. OneHelm third-party device control. SmartMode one-touch station presets. Mercury SmartCraft Connect engine data. Garmin SailAssist sail-racing features. ActiveCaptain mobile app.
The Garmin GPSMAP 8612 (Garmin part 010-02092-50) is the 12-inch full-HD touchscreen network chartplotter in the GPSMAP 8600 series. The GN+ designation means the unit ships preloaded with Garmin Navionics+ coastal and inland charts. Designed for serious helm installs where the operator wants the chartplotter / GPS / chart capability built in, but wants to pick the sonar setup independently (separate sonar black box, separate transducer choice). The right chartplotter for a multi-display glass helm on a 30-50+ foot cruiser, sport-fish, or yacht where the helm uses the GPSMAP as the primary chart and instrument display while sonar lives on a different unit (or a black-box sonar feed into this same unit).
What makes 8612 different from sonar-included combos. Many Garmin chartplotters bundle a built-in CHIRP sonar and ship as a chart-plus-sonar combo (e.g., the GPSMAP 9 / 12 series xsv variants). The 8612 is the no-built-in-sonar variant – giving you the full chartplotter capability without paying for sonar electronics you may not need (because you’re going to add a separate Panoptix LiveScope, separate GSD black-box CHIRP, or separate sonar source you’ve selected for your specific fishing application). Net result: the right chartplotter for boats whose sonar setup is more sophisticated than a built-in transducer can handle.
12-inch full-HD IPS touchscreen. The 12-inch (1280 x 800 native) IPS display is the right size for the typical 30-50 foot cruiser helm: large enough to read chart detail at distance and split into multi-panel views, small enough to fit dash space without dominating the helm. The IPS panel technology gives wider viewing angles than older TN displays – the screen stays clear and readable when viewed from off-center, important on a multi-helm install where the operator may be at the wheel while a passenger reads the chart from beside or behind. Sunlight-readable bright (matched to the marine helm in direct-sun conditions). Polarized-sunglasses compatible (the panel polarization stays clear through standard polarized fishing or boating sunglasses).
Preloaded Garmin Navionics+ charts. The unit ships with Garmin Navionics+ coastal charts (covering U.S. coastal waters in detail) plus inland lake mapping (covering most U.S. inland waters with bathymetry). Auto Guidance+ technology calculates a recommended navigation route from your current position to a destination based on the boat’s draft and the chart’s depth and obstruction data (Auto Guidance+ is for planning purposes only – you still verify the route for safe navigation). For boats that need higher-resolution shaded relief or 3D bathymetry, the 8612 also accepts Garmin Navionics Vision+ premium chart cards as a separate purchase.
Premium processor. The 8612 uses Garmin’s premium-performance chartplotter processor – the same silicon as the bigger GPSMAP 86 series. Fast chart drawing means panning across the chart at high zoom levels stays smooth instead of choppy. Smooth video distribution means networked Garmin video sources (camera feeds, multi-source HDMI) display without lag or dropped frames. Superior networking means the unit handles multi-device Garmin Marine Network setups (multiple chartplotters, sonar modules, radar, IP cameras) without performance issues.
Multi-display glass helm capability. The 8612 (and other GPSMAP 86 series displays) can be flat-mounted edge-to-edge to create a sleek glass helm look, or flush-mounted into a dash cutout for a clean built-in appearance. For helms running multiple displays (typical: two 12-inch units side-by-side, or one 12-inch and one 16-inch), the matching bezel design and matching display technology means the multi-screen install looks intentional rather than mismatched.
Garmin Marine Network + NMEA 2000 + ANT + Wi-Fi. Four connectivity options for four different use cases. Garmin Marine Network (Ethernet) for high-speed Garmin-to-Garmin device sharing (sonar feeds, radar feeds, video). NMEA 2000 for the boat’s instrument backbone (depth, speed, wind, GPS, AIS, engine data, fuel level). ANT for wireless personal devices (Garmin quatix marine smartwatch, gWind Wireless 2 wind sensor, etc.). Wi-Fi for the ActiveCaptain mobile app, OneChart purchases, and Garmin Quickdraw Community bathymetry data.
OneHelm third-party device control. The OneHelm feature lets the chartplotter directly control compatible third-party devices that integrate with the Garmin ecosystem. The list of OneHelm-compatible third-party devices spans engine controls, lighting, audio systems, switching panels, batteries, and more. The integration means the chartplotter becomes the central control panel for the entire boat’s systems, not just the navigation.
SmartMode station controls. SmartMode lets you build station presets that recall a specific multi-pane layout with one button press. Common presets: Docking (chart zoomed in, AIS overlay, depth display, engine data), Cruising (chart zoomed out, fuel flow, autopilot status), Fishing (chart with sonar pane, GPS fix accuracy, depth contours), Anchoring (chart with anchor watch alarm, depth, wind). Build the layouts once, recall instantly when needed.
Mercury SmartCraft Connect. With the Mercury SmartCraft Connect gateway (sold separately), the 8612 displays Mercury engine data for up to four Mercury engines simultaneously: RPM, fuel flow, temperature, trim, oil pressure, alarms. For Mercury-powered boats, this puts the engine instrumentation right on the same display as the chart and other navigation data.
Garmin SailAssist for sailing race boats. The built-in SailAssist features include virtual starting line with laylines, race timer, time-to-burn before the start, wind rose, set and drift, true and apparent wind data, and the rest of the racing-specific overlays. For sailors running club racing or sailing campaigns, SailAssist on the 12-inch screen gives serious dedicated-instrument-class capability without buying a separate dedicated sailing instrument.
Panoptix forward-looking sonar compatible. With a Panoptix PS51 transducer (sold separately), the 8612 displays FrontVu forward-looking sonar showing what’s ahead of the boat to help avoid running aground in unfamiliar waters. Useful for cruising boats entering shallow harbors and anchorages where the depth data on the chart may be out-of-date or insufficient.
ActiveCaptain mobile app. The free ActiveCaptain app on iOS or Android pairs with the 8612 over Wi-Fi for OneChart purchases / downloads, smart notifications, Garmin Quickdraw Community bathymetry sharing, smart phone-to-helm waypoint transfer, and trip planning. The app extends the chartplotter’s capability to your phone for use away from the boat (route planning at home, marina lookups, weather forecasts before heading out).
Dual microSD slots. Two microSD card slots accept additional chart cards (e.g., Navionics Vision+ premium charts), waypoint backups, and screen-shot exports. Two slots means you can run multiple chart products simultaneously without swapping cards.
What’s in the box. GPSMAP 8612 12-inch chartplotter (with preloaded Navionics+ charts), flush mount kit, NMEA 2000 cable, power cable, install instructions. Required separately: chart cards for additional regions, sonar module + transducer if you want sonar capability, NMEA 2000 backbone, and any optional accessories (GPS antenna for backup or external GPS source, AIS receiver, etc.).
2-year limited Garmin warranty. Same-day shipping before 3 PM ET on in-stock units.
