We often hear apparent wind described using the analogy of a person sitting in a convertible car on a still day. As the car accelerates from zero to 20 mph, the apparent wind felt on their face will ...

An asymmetric spinnaker only needs to work in reach mode, so it’s typically designed flatter than a symmetric spinnaker. Because the luff is always the luff and the leech always the leech, sail ...

Wired, a few days ago, put up an (overly long) article about a propellor-sail land-boat (a boat with wheels) that can outrun the wind and keep going. I won't go into the details of how this specific ...