Marine Digital Compass

If your device exposes a compass sensor, it is used. Otherwise we fall back to GPS course over ground (only valid while underway).

Digital Compass

Offline

NESW

---°

No signal

Compass unavailable — GPS only gives heading while moving (> 0.5 kt).

Uses your phone's magnetometer for live heading at rest. Real sensor data only — no synthetic heading.

Heading

—

Source

—

GPS COG

—

Speed

—

⚠ Planning Assistance Only — Not a Certified Navigation System

Always verify with official charts, onboard instruments, marina staff, NOAA/NWS, USCG, and professional navigation equipment.