Alfredo Contaldo · vídeo

O que este vídeo aborda

Velocity Made Good (VMG) measures a sailboat's effective speed toward a destination located directly upwind.▶ 0:34 To calculate VMG, sailors use the formula: VMG = Boat Speed × cos(TWA), where TWA is the True Wind Angle.▶ 11:59 While a boat may achieve higher absolute speeds on a beam reach, the VMG is zero at 90 degrees to the wind because the vessel makes no progress toward the upwind target.▶ 15:21 On a chart, VMG can be determined geometrically by plotting one-hour vectors for various headings and measuring the distance gained along the direct line to the destination.▶ 10:35 In a theoretical scenario with 15 knots of true wind, a boat might achieve a higher VMG by sailing at a 45-degree angle at 6 knots rather than pinching at 30 degrees at 4 knots.▶ 13:19 While instruments can display real-time VMG if properly calibrated, sailors typically develop an intuitive sense for optimal upwind performance through experience.▶ 19:27 Understanding VMG is essential for efficient tacking and determining when to initiate a maneuver toward a windward objective.

Mais de Alfredo Contaldo

How to pass the chartwork exam for the boating license beyond 12 miles in 2026jun. de 2026Propeller Shaft Bushing Replacement - 3-Blade Folding Propeller and Zincs 🛠 Onboard Work ⛵mai. de 2026What is a SELF-TACKING JIB ⛵ Pros and Cons and how it works on a sailboat ⛵abr. de 2026Can multitools and Swiss Army knives still be used after the "anti-maranza" decree?mar. de 2026

De Alfredo Contaldo — veja o barco, a tripulação e cada vídeo analisado do canal.