Choosing the right GPS for boating involves balancing rugged durability, water resistance, map coverage, and easy usability on deck. The following prominent marine and rugged handheld devices are designed to help you stay on course, log waypoints, and access charts while you’re out on the water. This guide highlights five well-suited options with key features to help you compare efficiently.
| Product | Brand | Key Feature |
|---|---|---|
| Garmin GPSMAP 79sc | Garmin | Floating, BlueChart g3 charts |
| Garmin 010-02256-00 eTrex 22x | Garmin | Rugged, topo maps, routable roads |
| Garmin GPSMAP 79s | Garmin | Worldwide basemap, floating |
| Garmin 010-00970-00 eTrex 10 | Garmin | Worldwide basemap, IPX7 waterproof |
| Garmin GPSMAP 86Sci | Garmin | Floating, preloaded BlueChart G3 and InReach |
Note: The products listed emphasize durability, marine map support, satellite compatibility, and water-related reliability. Read each section for specifics on how these devices perform on or near water.
Garmin GPSMAP 79sc: Rugged Floating Marine GPS
The GPSMAP 79sc is a rugged, floating handheld designed for harsh marine environments. Its high-resolution color display remains legible in sunlight, and the unit is water-resistant with IPX6 at the unit level. It supports BlueChart g3 coastal charts for detailed marine navigation. Expanded memory allows storing thousands of waypoints and hundreds of routes, supporting multiple satellite constellations for reliable global coverage. The built-in compass and floating design provide practical navigation reliability on deck or in rough seas.
Garmin 010-02256-00 eTrex 22x: Rugged Handheld GPS
The eTrex 22x combines rugged build quality with a bright 2.2″ color display. Preloaded Topo Active maps provide routable roads and trails, enabling reliable navigation on and around coastlines. The device is designed for easy, one-handed use, with long battery life and robust reception from multiple satellite networks, ensuring you stay oriented even when signals are partial due to shorelines or canyons near harbor basins.
Garmin GPSMAP 79s: Worldwide Basemap, Floating
The GPSMAP 79s emphasizes a robust floating design with a vivid display and fog-resistant glass. It includes a worldwide basemap and expanded memory for logging waypoints, routes, and activities. Like other marine Garmin handhelds, it supports multiple satellite systems for improved tracking across oceans and coastal waters, ensuring you can navigate confidently when away from shore-based signals.
Garmin 010-00970-00 eTrex 10: Global Portable Navigator
The eTrex 10 offers a compact, entry-level option with a worldwide basemap and IPX7 waterproofing for splash protection. It features WAAS-enabled GPS and GLONASS support for improved positioning. While smaller, its durable construction and simple interface make it suitable as a backup or secondary device on a boat, especially for basic waypoint navigation and tracking in coastal areas.
Garmin GPSMAP 86Sci: Floating Handheld With InReach
The GPSMAP 86Sci offers a floating design with a 3” sunlight-visible display and button operation for easy water use. It can stream boat data from compatible chartplotters and instruments to consolidate marine system information. Preloaded BlueChart G3 coastal charts provide robust coastal navigation data, and InReach satellite communication capabilities enable messaging and emergency connectivity, which is valuable for sailing or offshore trips.
Buying Guide
- Durability and water resistance: Look for floating designs and IP-ratings (IPX6 or IPX7) to ensure operations on waves and spray. Floating units reduce loss risk if accidentally dropped overboard.
- Chart coverage and map options: Prioritize devices with BlueChart or Navionics data, preloaded topo maps, and the ability to add marine charts. Ensure the device supports the regions you visit—coastal and offshore routes are common priorities.
- Display readability: A bright, sunlight-visible screen improves visibility in high glare conditions on the water. Larger displays can ease route planning and waypoint management, though larger devices can be less portable.
- Battery life and power options: Boats demand reliability; choose devices with long battery life and options to connect to external power, especially for extended trips.
- Satellite support and accuracy: Multi-GNSS compatibility (GPS, GLONASS, Beidou, Galileo, etc.) improves lock times and accuracy near shorelines or under tree cover at marinas.
- Memory for waypoints and routes: Ensure sufficient capacity for thousands of waypoints, hundreds of routes, and recorded activities if you kayak, sail, or motor around harbors daily.
- Additional features: Built-in compasses, barometric altimeters, and third-party connectivity (like satellite messaging) add value for safety and situational awareness on longer voyages.
- Ports and attachments: Check for accessory compatibility (carabiners, dry bags, mounting options) and ease of use with gloves, given typical boat conditions.