I’m building a marine navigation application and need someone who already feels at home with both the Garmin and Raymarine SDKs. My immediate goal is to get a solid integration layer that lets me pull core navigation data—position, heading, depth, AIS targets—into a single interface, ready for further UI work. Here’s what I need from you: • Connect to and authenticate with the latest Garmin and Raymarine APIs or device SDKs. • Expose clean, well-documented methods for real-time data retrieval (position, speed, course over ground, etc.). • Package the code so it can compile on the major desktop operating systems; I’m flexible on the exact toolchain as long as it’s cross-platform friendly. • Include a concise demo app that plots live GPS data and verifies the feed in under five minutes. Clear, readable code and straightforward build instructions are a must. If you’ve previously shipped marine navigation or NMEA-based projects, I’d love to see them.