Telltales are a very powerful tool to help with sail trim. … Luff telltales show what is happening with the wind as it goes over the luff of the sail. Instead of waiting for the sail to luff and slow you down, using the telltales allows you to correct the sail trim before the sail flaps.
What does Luff mean in sailing?
(Entry 1 of 2) 1 : the act of sailing a ship nearer the wind. 2 : the forward edge of a fore-and-aft sail.
How do you use telltales?
The most basic way to read telltales is to get the yarns on both sides of the sail streaming straight back. If the leeward one stops streaming, head up and sail closer to the wind. If the windward one stops streaming, fall off.
Where do you put telltales on mainsail?
On the mainsail, attach one telltale right on the leech at each batten pocket or at 1/4, 1/2 and 3/4 intervals along the leech. You should also install telltale sets in the middle of the mainsail (halfway between the luff and leech) at 1/2 and 3/4 heights.
What are the strings on a sail?
A tell-tale, also known as a tell-tail, in a nautical or sailing context, is a piece of yarn or fabric attached to a sail, a stay, or any rigging on a sailboat. Typically, a tell-tail is on a port and a starboard stay. Tell-tales attached to a sail are used as a guide for trimming (adjusting) a sail.
What is luffing and slewing?
To luff means to move the jib of a crane vertically to lift a load. A luffing jib moves under power (hydraulic or cable) with a load or into a working angle to lift a load. Manually fixed offsets are set at ground level. The boom is lowered and the pins retaining the vertical movement of the offset are removed.
What does luffing mean?
In sailing, luffing refers to when a sailing vessel is steered far enough toward the direction of the wind (“windward”), or the sheet controlling a sail is eased so far past optimal trim, that airflow over the surfaces of the sail is disrupted and the sail begins to “flap” or “luff” (the luff of the sail is usually …
How do you prune a genoa sail?
Genoa Sail Trim
- Close Hauled: sail in tight!
- Close Reach: 1-2 feet outside lifelines.
- Beam Reach: 3-4 feet outside lifelines.
- Broad Reach & Run: genoa comes off furler at 90 degree angle.
- Use telltales to fine tune sail trim.
When sailing close hauled If the Leeward telltale is fluttering or drooping what would be the best course of action?
– If the leeward (farthest away from the wind’s direction) telltale is fluttering, sheet out the sail toward the telltale or turn the boat away from the telltale (head up) until it flows smoothly.
How should you adjust the mast bend to depower your mainsail?
The first place to start when you need to depower is to flatten the foot all the way. Cunningham – The cunningham adjustment will slightly flatten the main and will help pull the draft back forward – important as the mast bends and the draft moves aft in the sail. This will help balance the boat in stronger wind.
What is the best shape for a sail?
The best shape for acceleration has the draft fairly far forward. Upwind — When a boat is sailing into the wind, you want sails that are relatively flat. Flatter sails reduce drag when sailing upwind and also allow you to point a little closer to the wind.
What supports a sail?
|Ship’s sail supports|
What is the main sail called?
Mainsail: As the name implies, this is the main sail of the boat. It is the sail attached to the back of the mast. Mast: The mast is a large, vertical pole that holds the sails up. Some boats have more than one mast.