{"product_id":"garmin-gpsmap-1643-16-chartplotter-gn-no-built-in-sonar","title":"Garmin GPSMAP 1643 16\" Chartplotter GN+ (No Built-in Sonar)","description":"\u003cp class=\"nvn-hero\"\u003eGarmin's 16-inch glass-helm chartplotter without built-in sonar, ships with Garmin Navionics+ charts pre-loaded from the factory. Sunlight-readable IPS display, upgraded processor, dual Marine Network ports, NMEA 2000 and J1939 engine integration, HDMI out, and Panoptix\/LiveScope readiness over the network. The GN+ designation saves you the cost of a separate Navionics chart card.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe GPSMAP 1643 is Garmin's 16-inch chartplotter at the base of the GPSMAP 16-inch lineup, sitting below the 1643xs (CHIRP only) and the top-spec 1643xsv (Ultra HD SideVu, ClearVu, plus 1 kW CHIRP). The base 1643 ships without any built-in sonar at all. That sounds like a downgrade until you realize the actual use case. Plenty of larger cruising boats, commercial vessels, and yacht installs already have an external sonar black-box module on the network, or they don't run a fishfinder at all. For those installs the built-in sonar in the xsv is wasted spend. The base 1643 gives you the same 16-inch display, the same processor, and the same network connectivity at a meaningfully lower price. If you decide later you want to add sonar, the Garmin Marine Network accepts external sonar modules, Panoptix transducers, and LiveScope transducers without any change to the chartplotter itself.\u003c\/p\u003e\n\u003cp\u003eThe display is the headline. 16 inches of IPS panel with edge-to-edge glass and a high-brightness backlight that holds up in direct sun, polarized sunglasses, and the off-angle viewing you get when two people are reading the same screen from different sides of the helm. The wide viewing angle of IPS is the difference between a chartplotter that works at the helm chair and one that only the captain can read clearly. The processor under the panel is the upgraded GPSMAP 16-inch core, which handles overlay radar, multi-engine NMEA 2000 data, IP video feeds, and live sonar (when you network a Panoptix or LiveScope transducer to it) without the lag that older 12-inch combo units sometimes show when you stack too many features on one screen.\u003c\/p\u003e\n\u003cp\u003eNetwork connectivity is the second major reason captains pick this unit. Dual Garmin Marine Network ports let you network this chartplotter to a second helm display, an open-array radar pedestal like the Fantom 5X, a Panoptix or LiveScope transducer, and a sonar black box all on the same Ethernet ring. NMEA 2000 and NMEA 0183 cover the rest of the boat's data: autopilots, VHF radios, AIS receivers, Fusion audio, and digital switching panels. The J1939 input speaks directly to heavy-diesel engine ECUs without a separate gateway, and Yamaha engine integration shows RPM, fuel burn, trim, and warnings directly on the chartplotter for owners running compatible Yamaha outboards. HDMI out feeds video to a second screen or a video distribution amp, which matters on multi-helm boats.\u003c\/p\u003e\n\u003cp\u003eThe Force trolling motor integration is where Garmin's ecosystem pays off for inshore and bass anglers. From the chartplotter you can steer the trolling motor, lock it on a heading or a waypoint, anchor virtually, and follow contour lines without touching the foot pedal. Power-Pole shallow-water anchors are also supported with auto-deploy, jog, and drag-detection features. CHARGE integration handles battery management across banks if you've got the matched alternator system installed. OneHelm digital switching consolidates third-party control panels (lights, pumps, accessories) into chartplotter screen pages so the helm stays uncluttered.\u003c\/p\u003e\n\u003cp\u003eFor sailors, the SailAssist feature set adds laylines for upwind and downwind tactics, wind roses with true and apparent wind angle overlays, polar tables for performance prediction, tide and current sliders, and a race-start countdown with line-bias calculator. It's not a substitute for a dedicated sailing instrument display, but for a cruiser-racer who wants navigation and sailing data on one big screen, it covers the basics well. Connectivity outside the boat runs through built-in Wi-Fi (ActiveCaptain app, software updates, Quickdraw map sync), Bluetooth (smart notifications), ANT+ (wireless sensors, watches), and inReach pairing for two-way satellite messaging from the chartplotter if you have an inReach subscription. The unit ships with Garmin Navionics+ charts pre-loaded for the US market, which is what the GN+ designation calls out. The optional Navionics Vision+ upgrade adds satellite imagery overlays and high-resolution bathymetric shading on top of the base Navionics+ data. The unit ships with a microSD card slot, power cable, NMEA drop cables, and both flush-mount and surface-mount hardware in the box.\u003c\/p\u003e\n\u003cp\u003eIf you specifically want sonar in the same box as the chartplotter, the 1643xs and 1643xsv variants are the right pick. If you've got a separate sonar module on the network or you don't fish at all, the base 1643 saves you a few hundred dollars without giving up anything you'd actually use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e16-inch high-brightness IPS display with edge-to-edge glass and wide viewing angle\u003c\/li\u003e\n  \u003cli\u003eNo built-in sonar (network sonar modules and Panoptix\/LiveScope transducers supported)\u003c\/li\u003e\n  \u003cli\u003eUpgraded processor handles overlay radar, engine data, and live sonar without lag\u003c\/li\u003e\n  \u003cli\u003eDual Garmin Marine Network Ethernet ports for full-boat radar and sonar network\u003c\/li\u003e\n  \u003cli\u003eNMEA 2000 and NMEA 0183 for autopilot, VHF, AIS, Fusion audio, and instrument data\u003c\/li\u003e\n  \u003cli\u003eJ1939 input for heavy-diesel engine ECU integration\u003c\/li\u003e\n  \u003cli\u003eYamaha engine data integration (RPM, fuel, trim, warnings)\u003c\/li\u003e\n  \u003cli\u003eGarmin Force trolling motor control from the chartplotter screen\u003c\/li\u003e\n  \u003cli\u003ePower-Pole shallow-water anchor integration (auto-deploy, jog, drag detection)\u003c\/li\u003e\n  \u003cli\u003eOneHelm digital switching for third-party DC accessory control\u003c\/li\u003e\n  \u003cli\u003eSailAssist laylines, wind roses, polar tables, tide sliders, race start countdown\u003c\/li\u003e\n  \u003cli\u003eBuilt-in Wi-Fi (ActiveCaptain), Bluetooth, ANT+, and inReach pairing\u003c\/li\u003e\n  \u003cli\u003eHDMI out for second-screen video distribution\u003c\/li\u003e\n  \u003cli\u003eActiveCaptain app for Quickdraw maps, software updates, and smart notifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from Vottex\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Garmin reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"nvn-trust-note\"\u003e16-inch combo chartplotters carry a lot of options. The right configuration depends on your transducer, your radar, your engine, and what trolling motor you're running. Tell us what's already on the boat and what you're planning to add and we'll spec the install correctly the first time, including the right transducer for the sonar features you want.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does GN+ mean and how does the 1643 differ from the 1623?\u003c\/summary\u003e\n    \u003cp\u003eSame hardware, same display, no built-in sonar on either. GN+ means Garmin Navionics+ charts are pre-loaded on the chartplotter from the factory. The base 1623 ships with the standard BlueChart g3 coastal charts and you'd buy Navionics separately on a microSD if you wanted them. The 1643 GN+ saves you that step and the cost of the chart card.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I add sonar to this chartplotter later?\u003c\/summary\u003e\n    \u003cp\u003eYes. The Garmin Marine Network accepts external sonar black-box modules and Panoptix\/LiveScope transducers. You'd add the sonar hardware to the network and it shows up as a sonar page on the chartplotter. There's no built-in transducer port on the base 1643, so all sonar runs through the network rather than directly into the back of the unit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I run live LiveScope or Panoptix on this unit?\u003c\/summary\u003e\n    \u003cp\u003eYes. The Garmin Marine Network supports LiveScope and Panoptix transducers. You'd be looking at the LiveScope LVS34 trolling-motor-mount transducer for inshore, or the Panoptix PS70 thru-hull for offshore deep-drop. Either one connects to the Marine Network and the live picture shows up as a sonar page on the chartplotter regardless of which 1643 variant you're running.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs there a touchscreen?\u003c\/summary\u003e\n    \u003cp\u003eYes, the GPSMAP 1643xsv has a touchscreen. Garmin also retains a few physical buttons for the home page and quick functions, which is the right answer at the helm where you might be operating with wet gloves on. Touch works under most spray conditions but isn't perfect in heavy rain, which is why the physical buttons exist.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat size boat is this chartplotter sized for?\u003c\/summary\u003e\n    \u003cp\u003e16 inches is big-boat territory. Most installs are on 35-foot to 60-foot sportfish, coastal cruisers, and trawlers where there's room at the helm for a full glass dash. On smaller boats the 12-inch GPSMAP 1223xsv usually fits the helm better. On larger commercial vessels you can run two 16-inch units networked together for redundancy.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it work with my existing autopilot and VHF radio?\u003c\/summary\u003e\n    \u003cp\u003eIf they're Garmin or any other brand on NMEA 2000 or NMEA 0183, yes. The 1643xsv talks to the standard marine network protocols, so most current-generation autopilots and VHF radios with NMEA integration show up on the chartplotter. Older units that only speak proprietary protocols won't integrate.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I control my Yamaha engines from this screen?\u003c\/summary\u003e\n    \u003cp\u003eYou can monitor compatible Yamaha engines (current Helm Master EX-integrated models). The chartplotter shows engine data and warnings on screen. Full throttle\/shift control still happens at the engine controls. Other engine brands integrate over NMEA 2000 or J1939 with similar monitoring capability.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's in the box?\u003c\/summary\u003e\n    \u003cp\u003eThe chartplotter itself, power cable, NMEA 2000 drop cable, NMEA 0183 cable, microSD card, both flush-mount and surface-mount hardware, and the installation manual. Transducer and any network cables to other devices are separate.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use it without an active subscription?\u003c\/summary\u003e\n    \u003cp\u003eBase navigation, the pre-loaded Garmin Navionics+ charts, and the radar\/engine integration all work without any subscription. Garmin Navionics+ chart updates are free for one year, after which annual updates are optional. ActiveCaptain is free. The optional Navionics Vision+ upgrade (satellite imagery overlay, bathymetric shading) and inReach satellite messaging require their own subscriptions.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's the warranty?\u003c\/summary\u003e\n    \u003cp\u003eGarmin's standard marine electronics warranty applies, 1-year limited for the chartplotter, longer for certain components. Coverage details are on the warranty card in the box.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eGarmin GPSMAP 1643 16-inch Chartplotter GN+ (No Built-in Sonar)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e010-02919-01\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eGarmin\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e753759335052\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDisplay Size\u003c\/th\u003e\n\u003ctd\u003e16 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDisplay Type\u003c\/th\u003e\n\u003ctd\u003eIPS with edge-to-edge glass, high-brightness backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTouchscreen\u003c\/th\u003e\n\u003ctd\u003eYes, with physical button overrides\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBuilt-in Sonar\u003c\/th\u003e\n\u003ctd\u003eNone (network sonar modules and Panoptix\/LiveScope transducers supported)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePanoptix and LiveScope Ready\u003c\/th\u003e\n\u003ctd\u003eYes, via Garmin Marine Network\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNetwork Connectivity\u003c\/th\u003e\n\u003ctd\u003eDual Garmin Marine Network (Ethernet), NMEA 2000, NMEA 0183, J1939\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWireless Connectivity\u003c\/th\u003e\n\u003ctd\u003eWi-Fi (ActiveCaptain), Bluetooth, ANT+, inReach pairing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVideo Out\u003c\/th\u003e\n\u003ctd\u003eHDMI\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEngine Integration\u003c\/th\u003e\n\u003ctd\u003eNMEA 2000, J1939, Yamaha Helm Master EX compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTrolling Motor Support\u003c\/th\u003e\n\u003ctd\u003eGarmin Force\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAnchor Support\u003c\/th\u003e\n\u003ctd\u003ePower-Pole shallow-water anchors\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDigital Switching\u003c\/th\u003e\n\u003ctd\u003eOneHelm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e15.1 x 10.3 x 3 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e9.7 pounds\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFlush or surface mount, hardware included\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMicrosd Slot\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eIncluded Accessories\u003c\/th\u003e\n\u003ctd\u003ePower cable, NMEA 2000 drop cable, NMEA 0183 cable, microSD card, mounting hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePre-loaded Charts\u003c\/th\u003e\n\u003ctd\u003eGarmin Navionics+ included; Navionics Vision+ upgrade available\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does GN+ mean and how does the 1643 differ from the 1623?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Same hardware, same display, no built-in sonar on either. GN+ means Garmin Navionics+ charts are pre-loaded on the chartplotter from the factory. The base 1623 ships with the standard BlueChart g3 coastal charts and you'd buy Navionics separately on a microSD if you wanted them. The 1643 GN+ saves you that step and the cost of the chart card.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I add sonar to this chartplotter later?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The Garmin Marine Network accepts external sonar black-box modules and Panoptix\/LiveScope transducers. You'd add the sonar hardware to the network and it shows up as a sonar page on the chartplotter. There's no built-in transducer port on the base 1643, so all sonar runs through the network rather than directly into the back of the unit.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I run live LiveScope or Panoptix on this unit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The Garmin Marine Network supports LiveScope and Panoptix transducers. You'd be looking at the LiveScope LVS34 trolling-motor-mount transducer for inshore, or the Panoptix PS70 thru-hull for offshore deep-drop. Either one connects to the Marine Network and the live picture shows up as a sonar page on the chartplotter regardless of which 1643 variant you're running.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is there a touchscreen?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, the GPSMAP 1643xsv has a touchscreen. Garmin also retains a few physical buttons for the home page and quick functions, which is the right answer at the helm where you might be operating with wet gloves on. Touch works under most spray conditions but isn't perfect in heavy rain, which is why the physical buttons exist.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What size boat is this chartplotter sized for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"16 inches is big-boat territory. Most installs are on 35-foot to 60-foot sportfish, coastal cruisers, and trawlers where there's room at the helm for a full glass dash. On smaller boats the 12-inch GPSMAP 1223xsv usually fits the helm better. On larger commercial vessels you can run two 16-inch units networked together for redundancy.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it work with my existing autopilot and VHF radio?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"If they're Garmin or any other brand on NMEA 2000 or NMEA 0183, yes. The 1643xsv talks to the standard marine network protocols, so most current-generation autopilots and VHF radios with NMEA integration show up on the chartplotter. Older units that only speak proprietary protocols won't integrate.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I control my Yamaha engines from this screen?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"You can monitor compatible Yamaha engines (current Helm Master EX-integrated models). The chartplotter shows engine data and warnings on screen. Full throttle\/shift control still happens at the engine controls. Other engine brands integrate over NMEA 2000 or J1939 with similar monitoring capability.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's in the box?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The chartplotter itself, power cable, NMEA 2000 drop cable, NMEA 0183 cable, microSD card, both flush-mount and surface-mount hardware, and the installation manual. Transducer and any network cables to other devices are separate.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use it without an active subscription?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Base navigation, the pre-loaded Garmin Navionics+ charts, and the radar\/engine integration all work without any subscription. Garmin Navionics+ chart updates are free for one year, after which annual updates are optional. ActiveCaptain is free. The optional Navionics Vision+ upgrade (satellite imagery overlay, bathymetric shading) and inReach satellite messaging require their own subscriptions.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's the warranty?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Garmin's standard marine electronics warranty applies, 1-year limited for the chartplotter, longer for certain components. Coverage details are on the warranty card in the box.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Garmin","offers":[{"title":"Default Title","offer_id":52024640307446,"sku":"102733","price":2450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/0456\/6575\/files\/113844-garmin-gpsmap-1643-chartplotter-gn-0.jpg?v=1792757475","url":"https:\/\/vottexpay.shop\/products\/garmin-gpsmap-1643-16-chartplotter-gn-no-built-in-sonar","provider":"Vottex","version":"1.0","type":"link"}