Tools, projects, guides, experiments, and working systems — everything I create, use, or want to keep in one place.https://ndlsk.com/en-ushttps://ndlsk.com/blog/magnetic-compass-deviation/https://ndlsk.com/blog/magnetic-compass-deviation/A practical guide to magnetic compass deviation, compass swing readings, and the NDLSK calculator that turns observed errors into a deviation curve.Sat, 23 May 2026 00:00:00 GMTGuidestoolsmaritimenavigationdeviation calculatormagnetic compasshttps://ndlsk.com/tools/deviation-calculator/https://ndlsk.com/tools/deviation-calculator/Calculate magnetic compass deviation coefficients from eight compass swing readings and turn them into a curve, table, and quick model check.Sat, 23 May 2026 00:00:00 GMTToolsmaritimenavigationmagnetic compassdeviation calculatorhttps://ndlsk.com/blog/the-meaning-behind-the-ndlsk-logo/https://ndlsk.com/blog/the-meaning-behind-the-ndlsk-logo/A short look at the ideas behind the NDLSK logo: a lighthouse, green light, initials, and digital roots.Fri, 22 May 2026 00:00:00 GMTNotesNDLSKPersonalDesignhttps://ndlsk.com/blog/what-ndlsk-is/https://ndlsk.com/blog/what-ndlsk-is/A first note about NDLSK, the things I want to keep here, and why this place exists.Thu, 21 May 2026 00:00:00 GMTNotesNDLSKnotespersonal website