Electronic Navigation Basics
18 octobre 2025 · 38 min · 1K vues
Ce que couvre cette vidéo
Tom Tersey, instructor at Maryland School of Sailing, surveys the full toolkit of electronic and paper navigation resources available to cruising sailors, covering both pre-passage planning and underway route tracking.
For pre-passage planning, Tersey walks through NOAA PDF charts (no longer updated but still useful as a reference), the NOAA ENC database (the authoritative, current design-configuration dataset), the NOAA NCC custom chart tool (which draws on ENC data and outputs a printable PDF up to 42×60 inches), the US Coast Guard Light List, NOAA Coast Pilot, and the USCG MSI app for querying Notices to Mariners.1:56 He stresses that ENC and NCC reflect design configuration only — a destroyed or missing buoy will not appear as absent until it is officially corrected, making LNM and BNM checks essential before any cruise.4:00
For underway navigation, he compares OpenCPN (free, Windows/Mac, natively uses NOAA ENC), Coastal Explorer (~$400, three-computer license), and Navionics (a Garmin subsidiary, mobile, proprietary charts).10:41 He explains three AIS aid-to-navigation types — physical, virtual, and synthetic — and covers AIS MOB devices.8:06 ActiveCaptain is noted as crowdsourced and therefore unreliable.31:30 ECDIS symbology differences between chart plotters and paper charts are flagged as a practical source of confusion.35:29
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