Essential Chart Work - Course to Steer - RYA Yachtmaster Theory Training
9 febbraio 2024 · 6 min · 2K visualizzazioni
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Calculating a course to steer requires accounting for tidal set and drift to maintain a desired track over ground.0:53 To perform this calculation, draw a line from the current position through the intended waypoint.0:56 Determine the tidal vector for the duration of the passage by measuring the tide's direction and speed over that time interval, then plot this vector starting from the current position.1:29 Set dividers to the boat's speed through the water for the same time interval.3:26 Place one point of the dividers at the end of the tidal vector and strike an arc that intersects the intended track line.3:47 Draw a line from the end of the tidal vector to this intersection point.4:14 This line represents the water track, or the heading the boat must maintain to compensate for the tide.4:55 Measuring the bearing of this water track provides the course to steer, which can then be adjusted for leeway, variation, and deviation.5:49
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