Simrad NSS4-10 10″ Chartplotter/Fishfinder Combo w/US C-MAP

NSS 4 is the latest generation of Simrad's mid-tier NSS chartplotter line, replacing the NSS Evo3S and NSS Evo3 platforms. Three meaningful improvements: (1) Qualcomm 8-core processor (vs quad-core on Evo3S) for noticeably smoother operation and faster auto-routing, (2) new hybrid control system with touchscreen plus rotary dial plus keypad (vs touchscreen-and-keypad on Evo3) - the rotary dial is the most useful addition for fast menu navigation, and (3) redesigned operating system with streamlined UI that's quicker at every touchpoint. For owners upgrading from NSS Evo3 or older, NSS 4 is the meaningful next-step generation.

The 10-inch NSS4-10 is the right size for 22-32 ft mid-size powerboats - center consoles, walkaround cuddies, bay boats, mid-size sportfishers, cruising powerboats. Large enough for productive multi-pane splits (chart + sonar + instruments), small enough to fit typical helm space. For smaller boats (under 22 ft) with limited helm space, consider the 9-inch GO9 XSE. For larger boats (32+ ft) where viewing distance matters or you want bigger multi-pane displays, step up to the NSS4-12 (12 inch) or NSS4-16 (16 inch) variants.

Each control method works best for specific situations and conditions. Touchscreen: fastest for exploring charts and selecting menu options in calm dry conditions - drag to pan, pinch to zoom, tap to select. Rotary dial: best for menu scrolling and adjusting data displays - faster than touchscreen for navigating multi-level menus, works reliably even in rough conditions. Keypad: best for one-touch access to most-used functions (Power, Pages, MOB) and for operation in heavy chop, wet hands, or with fishing gloves where touchscreens become unreliable. Having all three available means you always have the right control for the moment.

No - the NSS4-10 is sold as the chartplotter combo HEAD UNIT with built-in 1 kW CHIRP sonar processing, but the actual sonar transducer is sold separately. For the full Active Imaging or Active Imaging HD experience, source the matching Active Imaging transducer (HDI Skimmer, ActiveTarget, etc.) separately based on your boat type and fishing application. For basic 1 kW CHIRP only, source an appropriate CHIRP transducer. Plan transducer purchase as a separate line item.

C-MAP X-gen Discover X is the current-generation premium C-MAP cartography for U.S. coastal waters and major inland waterways. Features: high-resolution shaded relief showing underwater topography, optional satellite overlay capability, detailed shoreline mapping with marina information and navigation aids, hazard markers and depth shading, and Easy Routing for automated route planning with hazard avoidance. The X format supports OTA chart updates via the Simrad mobile app - no SD card swapping for routine updates. For coverage outside the U.S. or alternative cartography (Navionics, Insight), add an SD card with the appropriate region (sold separately).

The NSS4-10 integrates via Ethernet with Simrad's HALO radar series: HALO20+ (entry-level pulse-compression radar, ideal for 22-30 ft boats), HALO24 (mid-tier dome radar, 24-inch antenna), and HALO 2000 / 3000 series (open-array radars for serious offshore use). Radar overlay on chart, dedicated radar pages, automatic target tracking (ARPA) with the right radar variants. For boats with existing radars from other vendors, check NMEA 2000 compatibility - basic radar overlay may work via NMEA 2000, but full integration features (overlay, target tracking) require the matching Simrad HALO radar via Ethernet.

Yes - the NSS4-10 supports Simrad's RECON trolling motor (full chartplotter integration with Spot-Lock, AutoPilot, route follow, and waypoint sharing) and supports compatible aftermarket trolling motors from two major aftermarket brands via their respective integration protocols. For boats with trolling motors from other vendors, basic compatibility may exist via NMEA 2000 but the full integration features (chartplotter-based Spot-Lock control, automatic route navigation) require the matching trolling motor brand.

For typical deep-water sportfishing (300-1500 ft depths for tuna, swordfish, deep grouper), the built-in 1 kW CHIRP sonar handles those depths with the right transducer. For extreme deep-water applications (over 2500 ft) or specialized commercial deep-drop fishing, step up to the S3100 (1 kW external sonar with enhanced processing) or S5100 (2 kW external sonar for the deepest applications). The external sonar modules connect via Ethernet to the NSS4-10 and provide significantly more sonar power and processing capability than the built-in sonar. For most recreational sportfishing including deep offshore work, the built-in sonar is enough.