info@leansails.com  ·  +45 53 77 09 01Helsingør · Denmark
Lean Sails

Trin 2 · Opmåling

Opmåling af din båd

For at kunne designe og producere dit nye sejl har vi brug for en række mål fra din båd. Du vælger selv, om du vil foretage opmålingen eller lade os hjælpe dig.
Vælger du at måle selv, guider videoerne nedenfor dig trin for trin gennem opmålingen, så du får de rigtige mål med fra starten.

Sail type:
1
Boat & Owner
2
Mast & boat measurements
Measured in metres
m
Along the mast, band to band
m
Along the boom
or
m
Finished sail — head to tack
m
Finished sail — tack to clew
Enter either the rig dimensions (max luff & max foot) or the finished-sail luff & foot — not both. Filling one pair greys out the other.
m
Only if sprayhood clearance needed
m
Aft edge of the mast
3
Gooseneck — mast × boom
Tack pin & reef tack · measured in mm
mm
mm
mm
mm
mm
4
Luff Attachment
How the sail attaches to the mast — pre-selected from your order
From your order: Boltrope
mm
Diameter of the boltrope and any dacron or other materials
mm
Height above the tack where the boltrope should end
Does one of these match yours? Tap the diagram to enlarge.
Flat plate · round foot Base plate · raised loop Hole plate · flared foot Y2 X Y1 Z2 Z1 Z2 Z1 X Y1 Y2 Y2 X Y1 Z2 Z1 DIMENSIONS · MM XWidth across the base Y1Overall height Y2Lower height Z1Foot depth Z2Top hook / prong
TypeXY1Y2Z1Z2
—————
32214157
35234189
39255218
2522310.54
3529613.84
2229983
504011143
223012123
All dimensions in mm — X width · Y1 overall height · Y2 lower height · Z1 foot · Z2 top hook. Pick the closest match, or send a photo of one of your slides.
Match the cross-section of your slide. Tap a profile to select it, or its ⤢ corner button to enlarge. If unsure, pick “Not sure” and add a photo below.
5
Photos & notes
Please add 3 photos: the tack (boom meets mast), the clew (boom end), and the boat seen from the side.
📷
Tack
Boom meets mast
📷
Clew
Boom end
📷
Boat from side
Whole rig
1
Boat & Owner
2
Mast & boom measurements
Measured in metres · halyard full up, sail full out
m
Tack attachment to head swivel attachment, halyard full up
m
From the aft face of the furling profile inside the mast to full out on the boom
3
Mast groove & headfoil
Measured in mm
mm
Tack attachment to the mast groove
mm
Diameter of the luff tape
mm
Height of the stop above the boom
4
Photos & notes
Please add 3 photos: the mast groove at the tack, the clew (boom end), and the boat seen from the side.
📷
Mast groove
At the tack
📷
Clew
Boom end
📷
Boat from side
Whole rig
1
Boat & Owner
2
Halyard Measurements
Hoist the halyard to maximum, then measure
Before measuring: Hoist the halyard fully. Measure from the top of the halyard down to the sheerline (hull/deck join) at the main shroud base — NOT the top of any cabin or deckhouse.
m
Top of halyard to sheerline at main shroud base
m
From the top to the tack attachment
m
To sheet block outside shrouds
3
Drop the halyard, then measure from the tack attachment
m
Distance to the front face of the mast
m
Passing outside the shrouds
4
Photos & notes
Please add 3 photos: the tack fitting, the head, and the boat seen from the side.
📷
Tack
Fitting & furler drum
📷
Head
Swivel & top fitting
📷
Boat from side
Whole rig
1
Boat & Sail Info
Important: Lay the sail flat on a clean surface. Pull the luff tight — ideally with a tackle or helper. Measure along the edges, not across the fabric.
2
Overall Dimensions
Luff pulled tight. Measure along each edge.
m
m
m
mm
Width of the headboard at the head
mm
Edge of sail to batten car bearing point
mm
Aft mast face to tack attachment
3
Girth Measurements
Measured perpendicular to the luff at each height — in metres
m
At ¾ height of leech
m
At ½ height of leech
m
At ¼ height of leech
4
Reefing
One reef-back measurement per reef on your order
R
From your order
Your sail has 2 reefs — measure the reef back for each one below.
Preview — reefs on order:
5
Luff Attachment
Pre-selected from your order — change it if the sail differs
From your order: Boltrope
mm
Diameter of the boltrope and any dacron or other materials
mm
Height above the tack where the boltrope should end
Does one of these match yours? Tap the diagram to enlarge.
Match the cross-section of your slide. Tap a profile to select it, or its ⤢ corner button to enlarge. If unsure, pick “Not sure” and add a photo below.
6
Photos & notes
📷
Slides / Cars
Close-up of luff track
📷
Class Badge
Logo or insignia
📷
Full Sail
Whole sail laid flat
1
Boat & Sail Info
Important: Lay the sail flat on a clean surface. Pull the luff tight — ideally with a tackle or helper. Measure along the edges, not across the fabric.
2
Overall Dimensions
Luff pulled tight. Measure along each edge.
m
m
m
3
Luff Attachment
Boltrope · measured in mm
mm
Diameter of the boltrope and any dacron or other materials
mm
Height above the tack where the boltrope should end
4
Photos & notes
Please add 3 photos: the tack, the head, and the boat seen from the side.
📷
Tack
Boltrope & tack ring
📷
Head
Head fitting
📷
Full Sail
Whole sail laid flat
1
Boat & Owner
Measuring a furling headsail
2
Furler & set-up
How the furler drum is mounted changes measures C, D & U
Over-deck = drum sits on deck. Under-deck = drum recessed below deck, foil exits at deck level.
3
Step 1 · From the halyard swivel
Max luff
Measured in metres
Before you start: tie a long tape to the lowest shackle of the furler halyard swivel and set the backstay to 50% of maximum. Hoist the tape as far as it will go.
m
Halyard swivel to the furler tack attachment
4
Step 2 · Tape tied directly to the halyard
Luff & hoist measurements
Measured in metres
Now re-tie the tape directly to the halyard (without the swivel) and hoist again — take the remaining measurements from the halyard itself.
m
Halyard to the tack attachment
m
To the lowest pin bolt on the forestayTo deck height at the forestay
m
To deck height at the cap-shroud position
m
To the forward end of the sheet track
m
To the aft end of the sheet track
For E and F the tape may need to pass outside the mast’s cap shroud, like the leech of a genoa.
5
Step 4 & 5 · Halyard down
Deck & sheeting geometry
Tape fixed to the forestay’s lowest pin boltdeck height at the forestay
m
To the front of the mast at the top of the coachroof
m
To the cap-shroud fitting in the deck
m
m
Step 5 · Sheeting angles from the boat’s centreline
m
Fwd end of track to centreline
m
Aft end of track to centreline
m
Cap shroud to centreline
6
Step 6 · Furler details
Tack, feed-in & luff tape
Measured in mm
mm
Tack shackle to aft edge of the forestay profile
mm
Tack attachment up to the feed-in in the profile
mm
Max thickness fed into the forestay profile
7
Step 7 · Waterline
Water-surface heights
Used to set trim-stripe & seam angles to the horizon
m
Lowest pin boltDeck at forestay to the water surface
m
Cap-shroud fitting to water surface
m
Fwd end of track to water surface
8
UV cover & notes
UV cover: the side follows your furling direction (section 2) — starboard for anti-clockwise, port for clockwise. Shown only when a UV cover is on your order.
📷
Tack
Fitting & furler drum
📷
Head
Swivel & top fitting
📷
Boat from side
Whole rig
1
Boat & Owner
Measuring a headsail
2
Luff attachment
Carried over from your order — a few measurements below depend on it
⚓
From your order
Piston hanks — a wire forestay with hanks along the luff. You will be asked for the wire diameter in section 5. Rope luff for headfoil — a luff rope fed into a headfoil groove. You will be asked for the luff-rope diameter and the feeder height in section 5.
Preview — luff attachment on order:
3
Luff & hoist measurements
Halyard hoisted · measured in metres
Before you start: choose a calm day. Attach a long tape to the genoa halyard, exiting from the lowest sheave at the masthead, and set the backstay to 50% of maximum. Hoist the tape as far as it will go, then measure the following.
m
To the bearing surface of the tack fitting
m
To the intersection of the forestay and deck
m
To deck height at the shroud base
m
To the front of the genoa track
m
To the back of the genoa track
For E and F, make sure the tape passes around the shrouds, as if it were the leech of the sail.
4
Deck & sheeting geometry
Halyard down · tape fixed to the forestay attachment at deck · metres
m
Forestay to the forward face of the mast
m
Forestay to the main shroud base
m
Forestay to the front end of the track
m
Deck to the back of the track
Sheeting angles & shroud bases — from the boat’s centreline
m
Fwd end of track to centreline
m
Aft end of track to centreline
m
Main shroud base to centreline
5
Tack & luff-attachment details
Measured in mm
mm
Diameter of the forestay wire the hanks run on
mm
Diameter of the luff rope fed into the headfoil
mm
Bearing surface of the tack fitting up to the feeder (headfoils only)
Tap the fitting that matches your tack.
mm
At 90° from the forestay to the bearing surface of the tack fitting
6
Water-surface heights
From the water surface · metres · used to set seam angles to the horizon
m
Water surface to the forestay pin
m
Water surface to the cap-shroud base
m
Water surface to the forward end of the track
7
Photos & notes
Please add photos: the tack fitting, the head (halyard) fitting, and the boat seen from the side.
📷
Tack fitting
Close-up at deck
📷
Head fitting
Halyard swivel
📷
Boat from side
Whole rig
1
Boat & Sail Info
Copying an existing headsail
Measure along the edges, corner to corner — from the bearing point of the webbing loop or ring at the tack and head. Stretch the luff tight with a tackle: an old luff rope has usually shrunk.
2
Edge lengths
Measured in mm
m
Tack to head
m
Head to clew
m
Tack to clew
3
Luff tape & furler
So the new luff feeds your existing foil
mm
Luff-tape diameter
mm
Tack ring to start of the luff tape
mm
Apex to the head foil stop
4
UV cover
Shown only when a UV cover is on your order
5
Photos & notes
📷
Tack
Ring / webbing & furler drum
📷
Head
Swivel & luff tape
📷
Full Sail
Whole sail laid flat
1
Boat & Sail Info
Copying an existing headsail
Measure along the edges, corner to corner — from the bearing point of the ring or webbing loop at the tack and head. Stretch the luff tight with a tackle: an old luff wire or rope has usually stretched or shrunk.
2
Edge lengths
Measured in mm
m
Tack to head
m
Head to clew
m
Tack to clew
3
Luff attachment
Carried over from your order — the measurements below depend on it
⚓
From your order
Piston hanks — a wire forestay with hanks along the luff. Give the wire diameter and the cutback. Rope luff for headfoil — a luff rope fed into a headfoil groove. Give the luff-tape Ø, the cutback and the headfoil stop.
Preview — luff attachment on order:
mm
Diameter of the forestay wire the hanks run on
mm
Luff set back from the forestay at head & tack
mm
Diameter of the luff rope / tape that feeds the headfoil
mm
Luff set back from the headfoil groove at head & tack
mm
Height of the pre-feeder / stop above the tack
4
Photos & notes
📷
Tack
Ring / webbing & tack hank
📷
Head
Head ring & top hank
📷
Full Sail
Whole sail laid flat
1
Boat & Sail Info
Copying an existing Code 0
Lay the sail flat and pull the luff really tight, ideally with a tackle — a Code 0 luff carries a cable or heavy rope that must be measured under tension.
2
Edge lengths & girth
Edge lengths in mm · girth in metres
m
Head to tack, pulled tight
m
Head to clew
m
Tack to clew
m
At half leech, leech to luff — in metres
3
Your furler
Shown only when your order is a Code 0 for your own furler
4
Photos & notes
📷
Tack
Fitting & furler drum
📷
Head
Swivel & top fitting
📷
Full Sail
Whole sail laid flat
📋

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Generelt

Tips til opmåling

Denne video giver dig nogle enkle, generelle råd til opmålingen – uanset hvilket sejl du skal måle op til.
Vælg en dag med roligt vejr, tag et målebånd og en tommestok med, og giv dig god tid. Så er du godt på vej til en præcis opmåling.

Forsejl

Opmåling af forsejl

Bestil dit forsejl og mål selv op
Når du bestiller et forsejl og vælger selv at stå for opmålingen, modtager du et opmålingsskema, som du skal udfylde.
Skemaet tilpasses den enkelte båd og den type forsejl, du har valgt, så de nødvendige mål kan variere en smule.
Her kan du se, hvordan du måler op til en typisk rullegenua eller rullefok.

Storsejl

Opmåling af storsejl

Bestil dit storsejl og mål selv op
Når du bestiller et storsejl og vælger selv at stå for opmålingen, modtager du et opmålingsskema, som du skal udfylde.
Skemaet tilpasses den enkelte båd og den type storsejl, du har valgt, så de nødvendige mål kan variere en smule.
Her kan du se, hvordan du måler op til et typisk storsejl.