Archived App
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
Signals XXI is an interactive and bidirectional digital platform whose objective is to reinforce the maritime signaling for navigation and the sending of alerts (24/365) unipersonal that have a course, speed and cannon marked on the digital platform an imminent risk of collision or incorrect funding.
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What's New in Signals XXI
1.0
July 13, 2019
