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A 600 Nautical Miles stress test of the Orca App
July 8, 2026 • 2 min read
The system creates the route, but humans sail it.
This article was originally written by Stephan Boden in German and published in Segelreporter on May 29th, 2026. The original author has approved the translation and the following publication.
Stress Test at 600 Nautical Miles: The Orca Navigation App on Long-Distance Trial
How does a modern, app-based navigation solution hold up on a real nonstop long-distance passage under demanding conditions? Sailor Jan Flöter tried exactly that. On a delivery passage from Rome to Barcelona, he tested the Orca system over a distance of nearly 600 nautical miles. He told us about his experience on our podcast. Here's the summary:
Jan Flöter (right) with crew. Photo: Private
Jan Flöter's experience, in his own words, on the Segelreporter podcast (in German)
The Test Route: 600 Miles Nonstop on a Mini 650
The conditions for the test were spartan and demanding: the crew, made up of four sailors from the Karlsruhe Academic Sailing Group, was underway on a thoroughbred Mini 650. Since the boat is designed with no engine at all, the crew had to plan the route with extreme foresight.
The trip took them, among other places, through the notorious Strait of Bonifacio. Since the wind at four in the morning made making port without an engine too risky, the crew decided to bypass the strait altogether and sail the full 600 miles nonstop over four and a half days. Along the way, the team battled winds of up to 30 knots.
Weather Routing in Detail: Live Updates and Polar Data
For the crossing, Jan used Orca's "Smart Navigation" plan. Unlike the base version of Orca, which only calculates routes three days ahead, this Smart Navigation offered forward-looking routing for the entire trip, and a decisive feature for long passages: automatic recalculation of the route. Whenever the weather model changed during the four and a half days at sea, or the boat drifted from its ideal course, the app automatically recalculated the route in the background, with no manual input required.
New visualization, particle animations, transparent display of weather models and local data models. Screenshot: Orca App
For routing data, Orca draws on the official ORC database, from which the crew pulled the matching polar diagram for the Mini 650. However, since the boat wasn't fitted with high-tech racing sails but rather more conservative cruising sails, the crew scaled the polar data down to 95 percent in the app beforehand, which was recommended by the app's built-in AI support chat.
The calculation proved remarkably precise: the calculated time was 4 days and 6 hours; the actual arrival time was 4 days and 12 hours. Despite the rough weather and the long nonstop passage, the deviation in the end was just six hours.
The App in the Cockpit: AI Support and Hardware Handling
The software showed its strengths in the details, especially in practical use below deck and at the tiller:
Wind Angle correction via chatbot: During the passage, the crew found that the Polar Diagram's upwind beat angle couldn't quite be held in reality, since the boat was equipped with cruising sails. Using the onboard Starlink connection, Flöter turned to Orca's built-in AI assistant. In a chat exchange, the bot gave the concrete tip to manually adjust the so-called upwind offset angle in the settings by two to three degrees. After two clicks, the routing matched the boat's real sailing characteristics exactly again, and Orca's routing became more accurate.
Operation on smartphone: Since a Mini 650 sails extremely wet and has no fixed cockpit display, the app ran on an iPad below deck and in parallel on the crew's iPhones. Jan emphasizes that the display and routing functions worked just as reliably and clearly on the compact smartphone in the cockpit as they did on the larger tablet.
Extensive practical test with sailors. Photo: Orca
Power consumption and solar: Although navigation apps are generally considered power-hungry when run continuously, energy supply was never an issue. The Mini 650's large solar panels (about 120 watts) were more than enough to keep the smartphones and iPads permanently powered, even with two devices charging at once.
Chart resolution and safety: Compared to classic plotter systems (like Garmin), Orca's vector charts show slightly less detail in depth contours — instead of fine 20-centimeter gradations, there are larger jumps — but for safe navigation on the open sea and near the coast, the coverage was entirely sufficient. Relevant safety zones such as traffic separation schemes also remained reliably visible when zooming out.
Points of Criticism and Wishes for Practical Use
Despite the convincing performance on the long passage, Flöter sees two areas where the software could still improve:
Device-independent logbook: Anyone using the app without Orca's hardware (Orca Core) can't record tracks or save them as a log. For sailors who move between different boats, that's a drawback. For his own boat, Jan says he'll likely get the Orca Core.
Minor waypoint bug in route planning: When manually setting multiple waypoints on the smartphone, the app occasionally tended to suddenly declare an intermediate stop (e.g., waypoint 3) as the final destination, something that then had to be laboriously corrected via route editing.
Jan's verdict after 600 nautical miles: Even at an entry price of 49 euros, Orca (especially after the latest weather update with its Windy-style particle animations) offers extremely powerful and intuitive weather routing that proved itself as a fully capable navigation tool even on a hard 600-mile passage without an engine.
