Long-form, opinionated, vendor-agnostic guides for the categories of smart-boat gear that matter. We analyze every product currently shipping, we pick winners, and we show our math. No sponsored placements, no affiliate-biased rankings.
Every guide starts with a category scan — we identify every product currently shipping, collect specs and pricing from vendor sources, and read three years of forum discussion (The Hull Truth, Cruisers Forum, Sailboat Owners, Trawler Forum) to understand real-world reliability and failure modes that don't appear in marketing.
We then evaluate candidates against category-specific criteria — not one-size-fits-all. A bilge monitor for a sailboat is judged on different criteria than one for a powerboat. We pick a top pick, a budget pick, and an alternative for a specific use case — real buyers fall into different categories.
We do not bench-test products ourselves. Our guides are synthesis, not testing — think industry analyst, not Wirecutter. That makes us less authoritative on device-level reliability, but more up-to-date and more willing to cover niche products that lab-testing outlets skip.
Siren 3 Pro is our top pick, Siren 3 is our budget pick, ArmIt BilgeMax is the no-subscription alternative. We compare twelve systems on 3-year total cost, network quality, NMEA 2000 integration, and vendor durability.
Sailboat bilges are a different animal — heel, mast interference, mooring-field power constraints. We explain what actually matters, why float switches are problematic for sailboats, and pick the right system for coastal, trailer, and offshore cruisers.
The three most commonly recommended cellular monitors, compared round-by-round across ten criteria. Each one wins at something — we walk through which fits which kind of boat, and how the real 3-year costs compare.
If you refuse to pay ongoing fees, what are your real options? Glomex ZigBoat is our top pick, the open-source stack is the tinkerer's answer, and a $45 local alarm is the honest truth for liveaboards.
Raspberry Pi + OpenPlotter + Signal K + OpenCPN — the complete stack, parts list, and realistic build order. A full chartplotter for under $500 that does most of what a $3,000 MFD does, without subscriptions or vendor lock-in.
Yacht Devices YDWG-02, Digital Yacht iKonvert, Actisense NGX-1 — which gateway makes sense for a first-time installer trying to get NMEA 2000 data onto their phone or a Raspberry Pi? We walk through the connection-type decision that drives everything.
A full Home Assistant build for a boat: Raspberry Pi + Zigbee sensors + Signal K integration. Parts list with Amazon links, step-by-step install, and the six automations every boater should run. $285 total, zero subscriptions.
Starlink Mini vs Standard vs Flat High Performance vs used eBay v2 — which setup fits your boat in 2026. Honest pricing, the 10 mph in-motion rule nobody reads, Ocean Mode, real power budgets, and when you still want Iridium as a backup.
A primer on how cellular, Starlink, and Iridium fit together — when to use each, what the real annual costs are, and how to pick the right combination for your boating. The overview you need before picking specific products.
Pepwave MAX BR1 Pro 5G vs GL-iNet Spitz AX vs MoFi 6500 — a real comparison with pricing, SpeedFusion explained plainly, what antennas you actually need, and clear verdicts for three types of boaters. The GL-iNet at $323 has changed the equation.
How much solar keeps your monitoring, Starlink, and sensors running off-grid — real watt budgets, three complete kits, and the gear that works.
Receiver or transceiver? Class B vs B+? Do you need a dedicated antenna or an active splitter? Honest picks for cruisers, sailors, and trawlers — plus the install gotchas (MMSI registration, GPS placement, VSWR) that catch first-timers.
Garmin Fantom, Lowrance HALO20+, Furuno DRS4D-NXT compared. Solid-state vs magnetron, Doppler / MARPA explained, chartplotter compatibility, and how to wire radar to your existing helm.
Iridium GO! exec, Garmin inReach Mini 2, Zoleo, ACR Bivy Stick — the Starlink backup you actually need. Networks decoded, plans compared, MOB and SOS reality.
Victron BMV-712 Smart, SmartShunt, Balmar SG200. Shunt-based vs Hall-effect, multi-bank monitoring, NMEA 2000 / Bluetooth integration, install wiring without smoking your boat.
Aqua Map (free NOAA charts), OpenCPN (free open-source), Navionics Boating (worldwide). Offline charts, AIS overlay, anchor watch, weather — which app fits your boat.
Torqeedo Travel 1103 C, ePropulsion Spirit 1.0 Plus, Mercury Avator 7.5e. Real range numbers at displacement vs planing, integrated vs separate-battery designs, throttle telemetry, charging path.
Garmin GPSMAP 8612xsv, Raymarine Axiom XL 16, B&G Zeus3S 12. The MFD as the AIS + radar + NMEA 2000 + Signal K hub — ecosystem lock-in, chart costs, install reality.
Tailscale on Pepwave/GL.iNet, Surfshark + dedicated IP, NordVPN Meshnet. Punching through CGNAT for remote access to your boat, kill-switches, DNS leaks, install reality.
The modern marine data protocol — a JSON tree that normalizes NMEA 2000, NMEA 0183, and AIS. Signal K Server, OpenPlotter, signalk-cli — the implementations, plugin ecosystem, and real use cases.
Battle Born drop-in, DIY EVE 280Ah + Overkill BMS, Victron 200Ah + Cerbo GX. Depth of discharge, weight, alternator regulators, real wiring & commissioning sequence.
Spytec GL300 hidden 12V tap, Tracki long-life self-powered, Siren Marine Vault insurance-qualified. Cellular vs satellite, install concealment, police recovery realities.
Pull dish telemetry into Home Assistant — obstruction, throughput, latency, drop rate, power draw, thermal alerts. Native integration, starlink-grpc-tools logging, ping-based failover, and the bypass-mode route gotcha.