City Sailing · video

What this video covers

Navigating by GPS waypoints requires verifying that both the chart and the GPS unit use the same datum, typically WGS 84, to prevent positional errors.0:05 When plotting a route, zoom in on electronic charts to ensure the straight-line path between waypoints does not cross land, shoals, rocks, or restricted areas.2:10 Avoid using charted objects like buoys as direct waypoints, as this creates a collision risk in restricted visibility; instead, offset waypoints to one side.2:49 Always cross-reference the planned route against almanacs and pilot books for navigation warnings, such as shipping channels or no-go zones.5:37 During a passage, monitor progress using the trip log, bearings, and distances, while maintaining a constant awareness of the vessel's position through secondary methods like visual fixes, depth soundings, or radar.7:18 Periodically verify the route by checking for the nearest danger relative to the current position.4:59 Always maintain an alternative source of positioning in the event of GPS failure.9:35

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