Yourbestsail · video

Hva denne videoen dekker

A tutorial for PER and Patrón de IATE exam candidates explains the three compass headings used in navigation: true heading (RV), magnetic heading, and compass heading.0:09 True heading is the angle between the vessel's centerline and the geographic meridian; magnetic heading substitutes the magnetic pole for the geographic pole; compass heading adds the compass's own deviation error on top.0:45 The formula RV = compass heading + deviation + declination is derived geometrically rather than memorized, using a simple diagram of the true north meridian with magnetic north offset to one side.3:44 East declination and east deviation carry positive signs; west values carry negative signs.5:13 Mediterranean charts typically show west declination because magnetic north lies roughly toward northern Canada.6:34 Compass deviation arises from nearby metal parts or instrument error.9:59 The tutorial also shows how to reverse the formula — starting from a charted true heading to calculate the compass reading needed to follow that course.12:43 Working from the true-heading perspective first, then rearranging algebraically, avoids sign errors when converting in either direction.13:45

Mer fra Yourbestsail

The function of the centerboardaug. 2026Marinas and Yacht Clubs: Proceduresaug. 2026The 10 most common mistakes when docking a boatjuni 2026Anchoring: wave diffractionjuni 2026

Fra Yourbestsail – se kanalens båt, mannskap og alle analyserte videoer.

The Sailing Directory Newsletter

Én e-post med flåtens beste funn – øyeblikkene, båtene og historiene som er verdt din seertid. Skriv inn din egen adresse for å få din egen kopi.