How sail angle adjustment affects lift, flow separation, and stall, while teltailers help visualize the working flow.

Practical instructions for working with a nautical chart: checking the edition, reading depths and symbols, plotting coordinates, bearings and distances.

The crew sees thunderstorms ahead in the Gulf Stream region, and the actual wind conditions are already diverging from the forecast. They must then decide not only whether the boat can withstand winds of around 45–50 knots, but also how long it will take before conditions worsen, […]