An independent directory of every vendor, platform, and knowledge resource for the smart, connected boat. Honest buyer's guides. Real 3-year costs. No sponsored placements — ever.
Four common situations. Pick the one closest to yours and we'll route you to the right guide.
Filter by what you're actually trying to do. Each vendor is independently vetted — no sponsored placement, no affiliate links influencing rank.
Global IoT platform for leisure-boat monitoring. Works with OEMs and fleet operators; connectivity plus remote control built in.
Battery-powered wireless sensors with built-in cellular — no hub, no gateway, no dock Wi-Fi. Bilge, motion, temperature, door, photo-alert.
Autonomous smart marine sensors on the Sigfox 0G network — no Wi-Fi, no SIM, no boat power required. Fifteen-minute install.
UK-based pioneer in wireless boat monitoring. Position, bilge, smoke, battery, intruder — with satellite fallback options for offshore.
High-end monitoring and security with integrated satellite comms — geared to serious cruisers and boats away from cellular coverage.
Smart bilge-pump controllers, water-ingress sensors, and NMEA-integrated alert systems built for the commercial and cruising markets.
Cellular-connected boat monitoring with GPS tracking, geofencing, and deep integration — now owned by Yamaha and embedded into many new OEM builds.
Cross-platform desktop app that reads Starlink telemetry locally from the dish — connection health, throughput, latency, obstruction maps, and satellite tracking. One-time purchase, no cloud account.
Chartplotters, sonar, radar, autopilot, and the OneHelm / OneBoat app ecosystem — one of the largest integrated marine platforms in the world.
Axiom MFDs, LightHouse OS, Evolution autopilots, DockSense assisted docking. Strong integrated suite — popular on power and sail alike.
Sailing-centric displays and Zeus MFDs from the Navico family — SailSteer, laylines, wind-aware routing for serious sailors.
NSS/NSO MFDs plus the continuation of Robertson autopilot heritage — widely regarded as one of the strongest AP systems for power cruisers.
NavNet TZtouch MFDs, TZ Cloud for shore-side route planning, and the industry standard for serious commercial and sportfishing radar.
Modern tablet-first chartplotter with proper offline charts, AIS, autopilot control and a mobile app that actually feels built in this decade.
NMEA 2000–certified digital switching from Navico — replaces relay panels with networked modules, integrates with Simrad / B&G / Garmin MFDs, and powers OEM-branded boat apps via CZone Mobile.
The open marine data standard. A JSON-over-WebSocket format plus a self-hosted server that becomes the data hub for your whole boat.
Free, cross-platform navigation software with Signal K support, AIS, radar overlay, and a vast plugin ecosystem built by active cruisers.
Raspberry Pi–based OS that bundles Signal K, OpenCPN, and a stack of plugins into a ready-made onboard navigation computer.
Open-source sailing autopilot that runs on a Raspberry Pi — a serious alternative when you want full control and no subscription lock-in.
ESP32-based toolkit for building custom Signal K–compatible sensors: tank levels, engine temps, voltages — whatever your boat actually needs.
iKommunicate, NavLink2, iKonvert — gateways that translate between NMEA 0183, NMEA 2000, Signal K, and modern Wi-Fi networks.
Wi-Fi and USB gateways, engine interfaces, tank adapters, and NMEA loggers — the Swiss-army-knife brand for NMEA 2000 tinkering.
Professional-grade NMEA 2000 gateways, buffers, and interfaces — the name most boatbuilders specify when integration has to just work.
IoT marina-management platform that detects berth occupancy with wireless sensors — helps harbormasters maximise occupancy and offer new services.
Reservation and marina-management software connecting boaters and marinas — the booking.com of transient dockage in North America.
NMEA 2000 tank senders, digital switching, and monitoring hardware commonly specified on superyachts and commercial marine builds.
We analyzed every cellular-connected boat monitoring system currently shipping. Real 3-year costs, actual coverage maps, vendor durability — and the specific reason we recommend different systems for different boats.
Read the full guide →Long-form guides on the purchase decisions that matter. We pick winners, show our math, and tell you honestly when we'd change our mind.
Siren 3 Pro is our top pick. Twelve systems compared on 3-year total cost, network quality, NMEA 2000 integration, and vendor durability.
Heel tolerance, mast interference, mooring-field power — sailboat-specific picks for coastal, trailer, and offshore cruisers.
Head-to-head, round by round, across ten criteria. Which system fits which kind of boat — and what the real numbers look like.
ZigBoat for commercial no-sub, open-source DIY for tinkerers, a $45 local alarm for liveaboards. Honest trade-offs of each.
OpenPlotter, OpenCPN, Signal K on a Raspberry Pi — a full DIY chartplotter for a fraction of the OEM cost.
Yacht Devices, Digital Yacht, Actisense compared. The right gateway for getting your boat's data onto Wi-Fi without a degree in marine electronics.
Self-host your boat's smart systems. Bilge alerts, battery monitoring, geofencing — all running on a Pi with no subscription.
Mini vs Standard vs Maritime. Power draw, mounting, plan choices, and the real-world performance at the dock and at anchor.
Cellular, Starlink, Wi-Fi extenders, failover routers. How to layer them into a reliable always-on connection from dock to anchor.
Peplink, Pepwave, Mofi compared. Failover, SIM injection, antenna pairing — the routers that actually hold up in a salt-air environment.
How to size a panel and battery bank to run Starlink, Siren, and the rest of your connected stack without running the engine.
We add companies, open-source projects, and distributors that genuinely move the category forward — not whoever paid most this quarter.