Your compass for sailing
Points of sail.
Every course has a name, a sail shape, and a feel. Learn the sailing circle and you will know when to trim, when to ease, and how to reach any destination the wind allows.
One idea unlocks the lesson
Your point of sail is your angle to the wind.
A point of sail does not describe a fixed compass heading. It describes the boat’s direction relative to the wind. If the wind shifts while you hold the same heading, your point of sail changes.
As the bow turns away from the wind, the sails are progressively eased. As the bow turns toward the wind, the sails are progressively trimmed in.
boat
The missing slice of the circle
The no-go zone.
A typical sailboat cannot maintain forward drive when pointed directly into the wind. The sails luff, power disappears, and the boat slows. The exact width varies with boat design, sails, sea state, and wind strength, but beginners often picture an approximately 90-degree sector centered on the wind.
To reach a destination directly upwind, sail close-hauled on alternating tacks—a zigzag known as beating to windward.
Around the sailing circle
Five courses. One simple pattern.
Angles are approximate. Use the sail’s leading edge, telltales, and boat feel—not a number alone—to find the right trim.
Close reach
Beam reach
Broad reach
Run
Speak the language
Four phrases you will hear at the helm.
These words describe either the wind side of the boat or how the boat’s angle to the wind is changing. Learning them makes instructions faster and safer.
Changing sides of the wind
Tack through the bow. Jibe through the stern.
Both maneuvers change the side of the boat receiving the wind, but the path and boom behavior are very different.
Tacking
The bow passes through the wind and the no-go zone. The sails luff briefly, then fill on the new side.
- Start with enough speed for steering control.
- Communicate before turning.
- Release and trim the jib on the new side.
Jibing
The stern passes through the wind. The mainsail and boom cross the cockpit with force if they are not controlled.
- Check that crew and lines are clear.
- Control the mainsheet and boom.
- Steer smoothly and communicate the crossing.
The trim habit that works
Ease until it luffs. Trim until it just stops.
This simple routine helps beginners find efficient trim on most points of sail.
Continue learning
Trusted sailing references
Learn it by feeling it
Turn the sailing circle into instinct.
ASA 101 combines clear instruction with hands-on practice in steering, sail trim, tacking, jibing, safety, and boat handling on Lake St. Clair.
Explore ASA 101 →