Yacht encyclopedia
Chartplotter
Chartplotters on sailing yachts: MFD role, chart currency, survey checks, and FairHelm limits on treating a bright screen as navigation proof.
What this is
A chartplotter (often an MFD) is a bridge display that places GNSS position on electronic nautical charts and may overlay radar, depth, or instrument data.
Anchor
Cockpit and nav-station units are both common on boats FairHelm reviews. Sun-faded screens, cracked housings, and expired chart subscriptions appear on older installs. Paper or a second device remains part of a sane coastal plan in Northern Europe.
FairHelm judgment
FairHelm judgment: treat chart currency, waterproofing of the mount, and a working backup as survey talking points. A large screen in a listing photo does not prove charts are licensed or updated. Do not confuse plotter presence with passage competence.
Limits
This page does not sell chart brands or invent update intervals as law. Follow hydrographic authority practice and the maker subscription rules for that unit.
FAQ
Q: Does a plotter replace paper charts?
A: Many crews still carry paper or a second electronic source. Local rules and personal risk tolerance apply.
Q: Is Wi-Fi update enough forever?
A: Subscriptions expire. Confirm the date on the set for the cruising area.
Q: Can I judge a plotter from a photo?
A: Size yes. Chart status and button wear need power-on.