Theory · topic 3 of 10 · 8 min

Sails, furling & reefing gear

Sails are checked hoisted, at the pontoon, in Saturday's calm. A fault found there is the base's to fix; found on Sunday off the headland it is your problem. See every sail up, every reef in and every furler turn before you sign.

1 · Sails and inventory

You sign for what you were shown

Should I see the sails hoisted before signing for a charter yacht?

Yes: ask for the main hoisted and the genoa unrolled while it is calm. If it blows too hard, have the sail rolled out a metre and back, and write not fully seen on the form.

'Sails: OK, checked yesterday' is not a check. Ask for the main hoisted and the genoa unrolled while it is calm. If it blows too hard, have the sail rolled out a metre and back, and write 'not fully seen' on the form.

What you findWhat you ask for
Chafed clew, torn leech, UV strip hangingThe base's repair before you leave
An old, stretched sailIts state on the form; reef it early
A sail listed but not aboard; a wrong sail numberThe list corrected before you sign
A gennaker on the listHoisted in its sock once; tack line and halyard found

The inventory you sign is what you hand back: a storm jib that was never aboard is charged as missing. A gennaker is normally outside the waiver and needs the base's written consent, so a torn one is paid in full. Report damage the day it happens: hiding it costs more than the repair.

2 · Mainsail and halyards

Up, down, and what can snag

How do I check the mainsail on a charter boat at the pontoon?

With the main up, look at every batten pocket, every luff slide and the whole leech, then let the halyard go: the sail must drop on its own, or you cannot get it down fast in a squall.

With the main up, look at every batten pocket, every luff slide and the whole leech. Missing battens let the leech flog; a cracked slide jams the hoist; a tear grows, so the sailmaker mends it before you leave, like worn spreader patches. Then let the halyard go: the sail must drop on its own, or you cannot get it down fast in a squall.

HalyardsWhat to know
Tape mark at the clutchFull hoist: stop there, or the headboard jams in the sheave
ShackleOne that can open drops the sail and sends the halyard aloft
Masthead, by binocularsCrossed halyards are cleared from aloft, by the base
Electric winchShort pushes, eyes on the sail, stop at any snag

Hoist head to wind at slow ahead, eyes aloft. If the hoist stops, a batten end is under a lazyjack: ease, clear it, go on by hand. Without lazyjacks someone flakes the sail at the mast as it drops. See a catamaran's square-top main hoisted and bagged once.

3 · Genoa furler

It must roll in by hand

What should I do if the genoa furler jams?

Never winch it: ease the sheet, try again by hand and call the base. If the furling line goes solid, look up, because the halyard may be wrapped round the forestay above the swivel.

In light wind a furler turns by hand; one that needs a winch at the pontoon will not furl at 25 knots. The line runs fair through its lead blocks, and the sail is rolled with its UV strip outside. If the line goes solid, look up: the halyard may be wrapped round the forestay above the swivel. Never winch a jammed furler. Scallops along the luff ask for more halyard, just until they go.

At seaWhat you do
Furling in a breezeBear away so the main blankets it, keep a little sheet tension, haul by hand
The furler jamsEase the sheet, try again by hand, call the base; cut nothing
Genoa half rolledMove the sheet cars forward, or the leech flogs

Sheets show no bare core and reach their winches; each car is pinned in its track. A self-tacking jib still has one sheet, one car and two end stops to check.

4 · In-mast furling

A tight roll and the boom at its mark

How do I furl an in-mast mainsail without it jamming?

Set the boom to the base's mark, keep a little outhaul tension and take the furling line in steadily. If it bunches in the slot, stop, unroll a turn and furl again by hand: under power a bunch only tightens.

The main rolls up inside the mast through a narrow slot, where a loose roll bunches and jams. To unfurl, haul the outhaul on the winch while easing the furling line under slight tension. To furl, set the boom to the base's mark, keep a little outhaul tension and take the furling line in steadily. Never winch against a closed clutch.

Rule

A bunch in the slot only tightens under power. Stop, unroll a turn, boom to its mark, furl again by hand.

5 · Reefing and wind limits

Put the reef in at the pontoon first

Should I practise reefing before leaving the charter base?

Yes: put reef 1 in at the pontoon and try reef 2, to see which line does what, that it runs free and is long enough. A torn cringle or a short reef line is put right before you leave.

Put reef 1 in at the pontoon and try reef 2: you see which line does what, that it runs free and is long enough. Horns at the gooseneck mean a two-line system: someone goes to the mast, clipped on, to hook the luff cringle, then the clew line is hauled from the cockpit. A torn cringle or a short reef line is no reef: it is put right before you leave.

Reefing wind speeds and a maximum wind force in the contract or the briefing are terms, not advice: sailing above them can void the insurance. The limit is read against the forecast, so you move the passage: leave before the wind arrives and tell the base. When a reef is forecast, put it in at the hoist, in flat water.

Remember

Shaking a reef out is easy. Taking one in late is not.

6 · Boom gear

What controls the boom and what tames it

How should a boom preventer be rigged on a charter yacht?

A preventer runs from the boom end to the bow and back to a cockpit winch, so it can be eased. A boom brake only slows a gybe by friction; it does not stop one.

GearWhat to know
MainsheetCracked block or worn cam cleat: replaced now. Chafed cover, sound core: noted
Rigid vangHolds the boom up with the sail down: no topping lift
PreventerFrom the boom end to the bow and back to a cockpit winch, so it can be eased
Boom brakeSlows a gybe by friction; it does not stop one
Bimini under the boomAgree, in writing, whether it folds under sail

Practice questions

Questions from this topic, as the app asks them. Open one to see the answer.

Sails: OKCheck-in form — sails
  • Checked yesterday — technician
  • Wind at the pontoon: F2, no swell
  • Main in the stackpack, genoa furled

Saturday, 16:30, light wind. The technician ticks 'Sails: OK' and says they were checked yesterday. What do you ask for before you sign?

  1. The main hoisted and the genoa unrolled now, while it is calm
  2. A look inside the stackpack and the sail bags, unhoisted
  3. To unroll them yourself on the first morning and phone in faults
  4. Nothing — it was checked yesterday and the form says OK
Show the answer

A. The main hoisted and the genoa unrolled now, while it is calm

Sails are checked hoisted: at the pontoon in light wind, not at sea; a faulty sail found on Sunday is your problem.

Check-in: sails · Explained in: Sails and inventory

HoistedMainsail hoisted
  • Batten 2 (from the top): pocket empty
  • Batten 3: snapped, bends in the middle
  • One luff slide cracked; stackpack zip slider missing

The main goes up at the pontoon and you see this. What do you ask for before you sign?

  1. The zip fixed now; battens only matter with the full main up
  2. Everything on the form — you will be sailing on reef 1 most days anyway
  3. Battens and the slide replaced now; the zip photographed and on the form
  4. A spare batten and a spare slide to fit yourself at the first anchorage
Show the answer

C. Battens and the slide replaced now; the zip photographed and on the form

Missing battens let the leech flog and tear; a cracked slide jams the hoist. The zip only keeps the cover shut.

Check-in: mainsail · Explained in: Mainsail and halyards

The genoa is fully unrolled. You look at the furling drum and see this. What do you ask for?

  1. Three turns taken off the drum so the sail unrolls fully
  2. The line rewound tight on the drum with the sail fully out
  3. Nothing — the drum should be empty when the sail is out
  4. The slack on deck coiled, tied off to the pulpit and left
Show the answer

B. The line rewound tight on the drum with the sail fully out

With the sail fully out the drum must hold enough line to roll it all in; one turn left means the line runs out mid-furl.

Check-in: genoa furler · Explained in: Genoa furler

The boat has in-mast furling. The technician asks you to unfurl the main yourself. How do you do it?

  1. Outhaul out on the winch, the furling line eased with a little tension kept on
  2. Furling line cast off fully first, then the outhaul hauled out on the winch
  3. Outhaul winched out with the furling line still shut in its clutch
  4. Furling line and outhaul hauled together so the roll stays tight
Show the answer

A. Outhaul out on the winch, the furling line eased with a little tension kept on

The roll must stay firm as it leaves the mast: slack on the furling line lets it bunch and jam in the slot; never winch against a closed clutch.

Check-in: in-mast furling · Explained in: In-mast furling

ReefsClutches — port coachroof
  • Red: main halyard
  • Blue: reef 1 · blue/white: reef 2
  • White: outhaul · black: kicker

The technician points at the clutches and says 'reefs are there'. What do you ask for before you sign?

  1. The colour code written on the form so you can look it up when you need it
  2. The reef lines coiled and stowed below; you will try them out at sea
  3. Reef 1 put in at the pontoon, so you see which line does what and runs free
  4. A spare clutch handed over in case one of the reef clutches fails at sea
Show the answer

C. Reef 1 put in at the pontoon, so you see which line does what and runs free

A reef is practised at the pontoon in calm, not worked out at 25 knots; a jammed reef line is then the base's fix.

Check-in: reefing · Explained in: Reefing and wind limits

3 cmBoom & bimini
  • Main sheeted in: boom end 3 cm above the bimini frame
  • Bimini: folds aft in a minute
  • Technician: 'everyone sails like that'

The main is sheeted in at the pontoon and you see this. What do you settle with the base before you sign?

  1. Whether the bimini folds under sail or the boom is held clear — and who pays if it tears
  2. Nothing — it is only canvas; the boom slides over it on a gybe without harm
  3. The bimini taken off and left ashore at the base for the week, fitted again on Friday
  4. The boom held up high on the topping lift and cleated there for the whole week
Show the answer

A. Whether the bimini folds under sail or the boom is held clear — and who pays if it tears

A boom that meets the bimini on a gybe tears it, and the damage comes off your deposit; agree the rule now, in writing on the form.

Check-in: boom & bimini · Explained in: Boom gear

Practise it

All 50 questions of this topic are in the app: practice by topic with the reason after every answer, your mistakes brought back, and a timed mock exam. Free, no sign-up, in the browser or in Telegram.