GPSMAP® 1643 Chartplotter

GET A SHARPER VIEW FROM A CONNECTED HELM

With its sleek design, powerful processing, and upgraded IPS display, this
advanced 16” chartplotter integrates seamlessly into a Garmin marine system.

 
• 
   Easily integrate with more engines. 

 
• 
   Connect to compatible third-party devices with digital switching and OneHelm™
   integrations. 

 
• 
   Easily build a marine system by using our advanced network connectivity. 

 
• 
   Navigate any waters with preloaded Garmin Navionics+™ charts

 
• 
   Manage the marine experience from nearly anywhere¹.

 Live
Sonar Support

Pair with Panoptix™ or LiveScope™ easy-to-interpret live sonar (transducer
required, sold separately) to see all around the boat in real-time.

Faster, Sharper, Smarter

With its added processing power and slimline design featuring edge-to-edge
glass, it’s easy to fit this plotter in a wider range of dash configurations.

Bright and Clear Optics

High-resolution IPS display chartplotter offers improved sunlight readability
and visibility from any angle.

Preloaded Mapping

Experience unparalleled coverage and detail with built-in Garmin Navionics+™
integrated coastal and inland mapping that includes Auto Guidance+™ technology2
and a 1-year subscription for downloadable daily updates and more on select
chartplotters.

Optional Charts and Maps

Bring a fresh new look and feel to the chartplotter with an optional upgrade to
a Garmin Navionics Vision+™ premium chart subscription, featuring downloadable
high-resolution relief shading, satellite imagery, sonar imagery, and more.

Power-Pole® Shallow Water Anchor

By networking select Garmin chartplotters with a Force® trolling motor and a
compatible Power-Pole shallow water anchoring system, users can access advanced
boat control features3 from the plotter, including smart anchor auto-deployment,
smart anchor jog, auto stow, anchor drag detection, and end-of-route anchoring.
Spend more time fishing and less time positioning.

Trolling Motor Integration

Get support and integration for a Force trolling motor (sold separately) to gain
complete control while fishing.

Charge Integration From Power-Pole

CHARGE Marine Power Manager from Power-Pole integrates with compatible Garmin
chartplotters to help keep battery power going longer and stronger on the water.
Users can charge batteries on the run, monitor power use, select where power is
allocated, control emergency starts, and even transfer power between battery
banks — all from the chartplotter display.

Garmin Sailassist™ Sailing Features

View laylines, race start line guidance, enhanced wind rose, heading and
course-over-ground lines, true wind data fields and tide/current/time slider,
wind angle, set and drift, wind speed, and more.

Sailing Polars

Use the polar table to see key data, including how fast users should go at a
certain wind angle and speed — so users know whether the sail trim needs to be
adjusted.

Garmin Marine Network

If users have multiple compatible Garmin devices on the boat, users can share
information — such as maps, user data, radar, and IP camera video — among them.

NMEA 2000® and NMEA 0183 Networks

Connect to compatible autopilots, digital switching, weather, the Fusion audio
system, media, VHF, AIS, and more from one screen.

Activecaptian® APP

Built-in Wi-Fi® connectivity pairs with the free all-in-one mobile app for
access to the OneChart™ feature, smart notifications, software updates, Helm
app, Garmin Quickdraw™ Community data, and more1.

Integrated ANT® Technology

Connect with some of the favorite devices, such as quatix® marine watches, gWind™
Wireless 2 transducers, GNX™ Wind marine instruments, and wireless remote
controls.

Engine Connectivity

Users can connect a chartplotter to different engines, including select Yamaha®
engines.

OneHelm Feature

This feature brings together all the operations and capabilities of select
third-party devices, such as EmpirBus™ digital switching, on one screen.

Send InReach® Device Messages

Pair an inReach satellite communicator4 to the chartplotter, and type custom
messages by using the MFD’s on-screen keyboard. Access the contact list, or
enter an email, inReach address, or phone number. Users can also group messages
by conversation for a texting-like experience.

In the Box:

 
• 
   Chartplotter

 
• 
   microSD™ preinstalled

 
• 
   Power cable

 
• 
   NMEA 2000® T-connector

 
• 
   NMEA 2000 drop cable

 
• 
   Flush mount kit with gasket protective cover

 
• 
   Trim piece snap covers 

Connections

 
• 
   NMEA 2000® Ports: 1

 
• 
   NMEA 0183 Input Ports: 1

 
• 
   NMEA 1083 Input (TX) Ports: 1

 
• 
   Video Input Ports: 1 (BNC composite)

 
• 
   Video Output Ports: 1 HDMI

 
• 
   J1939 Ports: 1

 
• 
   Garmin Marine Network Ports: 2

 
• 
   USB Ports: 1

 
• 
   Bluetooth® Pairing

 
• 
   ANT+ (Connectivity)

 
• 
   Garmin Wi-Fi Network (Local Connection)

Specifications:

 
• 
   Unit Dimensions: 15.1" x 10.3" x 3" (38.4 cm x 26.2 cm x 7.6 cm)

 
• 
   Unit Weight: 9.7 lbs (4.4 kg)

¹Requires ActiveCaptain app on a compatible smartphone paired to a
chartplotter

²Auto Guidance+ is for planning purposes only and does not replace safe
navigation operations

³Integration of these features requires the purchase of a
C-Monster® GATEWAY through Power-Pole

⁴Active satellite subscription required. Some jurisdictions regulate or
prohibit the use of satellite communication devices. It is the responsibility of
the user to know and follow all applicable laws in the jurisdictions where the
device is intended to be used.

Wi-Fi is a registered trademark of the Wi-Fi Alliance.

Engineering enhancements are ongoing and may not be reflected in the pictures,
videos, and specifications.