Nautical Ninja
Active navigation for sailors underway
Full underway navigation suite for sailors at sea. Displays live AIS vessel traffic, calculates dead reckoning positions, sounds an anchor watch alarm if you drift, marks a man-overboard position instantly, logs your trip automatically, and lets you plan routes on official NOAA vector charts — all in one screen.
Live vessel positions, names, speed, and heading from AIS broadcasts.
Draw waypoint routes on NOAA charts with distance and bearing readouts.
Set a radius alarm — alerts you if the boat drags while you sleep.
One tap marks a man-overboard position with heading and distance back.
Automatic logging of track, distance, speed, and elapsed time.
Official US vector charts — always current, rendered at full detail.
Before casting off Plan your route, check for traffic in the channel, and review any hazards along the way.
Underway at the helm Monitor AIS traffic, track your course made good, and log your passage automatically.
At anchor overnight Set the anchor watch alarm and rest easy knowing you'll be woken if the boat drags.
Man overboard Tap MOB immediately — the app locks the position and gives you a heading back.