To Reef Or Not to Reef - What Every Skipper Should Know About Reefing

Of all the questions I'm most frequently asked, "HowAnd balance is the critical word there. Reefing the
will I know when to reef the mainsail?" tops the list. Itmainsail really is a matter of restoring the balance of
may seem to be dodging the issue to say that therethe boat in increasing conditions.
are really two answers to this, depending whetherWithout a traveller it is more difficult to judge the
your boat's mainsail system includes a traveller or not.indisputable moment. It varies from boat to boat, even
If you have a traveller, it is much easier to tell when tofrom steerer to steerer. But essentially the problem is
reef than if you don't. This is because as soon as youthe same. The boat is becoming overpowered. It
need to ease the traveller because of the pressure ofprobably has its lee rail under and will be starting to slip
wind on the mainsail, you need to reef. Reallyto leeward.
experienced sailors may have learnt from their ownUnfortunately, it demands more experience than with a
boat how much more pressure it will accommodatetraveller system.
between the first easing and the traveller being fullyWhat can help in these circumstances, particularly for
extended.small to medium size boats, is to have a flattening reef
It is hard to imagine a boat being able to sailin the mainsail. This is basically a reef which removes a
satisfactorily to windward with the traveller fullysmaller slab of sail area compared with a full reef. It
extended, but it could be in some cases that reefingallows a flatter trim to the sail which again allows the
the mainsail on the first real pressure is too earlysteerer to sail closer to the wind because the weather
although I tend to be of the school of early reefers.helm is reduced.
It is essential to understand the reasons for reefing. It isIf the increase in wind strength that has brought on the
not because the mast is likely to be plucked out of thereef is quite severe, it may be necessary to reef the
boat or because the mainsail might tear. It is becauseheadsail as well. This is usually done by putting up a
the weather helm increases to the extent that thesmaller headsail and dropping the current larger one. It
steerer has to adjust the rudder to compensate. Thisis obviously easier to furl a sail than to change it but a
is precisely like braking in a car.furled sail is much harder to sail closer to the wind as
Nearly all great windward sailing is really a duetthe roll of sail along the former luff breaks up the
between the person steering and the person on theairflow more.
traveller. It is a song of equals but the definite,Just to show that nothing's really simple in sailing, when
indisputable time to reef is when the hand on theto change headsails differs between masthead rigs
traveller cannot balance the weather helm.and fractional rigs, but that's another subject.