Tag Archives: junk rig fan up

The dreaded junk rig fan up

junk rig sailing brae shetland

sailing south from Brae, Shetland back to the Scottish mainland summer 2015

After sailing back to Lochinver from the Shetlands in July, we stayed put until the end of August when a high pressure locked in with brisk northerly winds. Like migrating birds we sailed south to Ireland for the winter.

First landfall was on Tory Island of the north coast of Republican Ulster. After a night at anchor off the harbour pier we sailed down to Arranmore island on the NW coast of Donegal and anchored off the beach past the hook on the south coast.

By this time the northerlies were starting to fade so the next day we made one last push south and by the next day, in light breezes, made our way into the “best natural harbour in Ireland”, Inisbofin.

inishbofin harbour

“best natural harbour in Eire”, Inishbofin

After waiting a week in Inisbofin for favourable winds we pushed off southwards again.

broken main yard


Just south-west of Slyne Head the main yard suffered a catastrophic failure due to the de-lamination leading to it cracking in half. With no more working main we made the decision to head south-east to head to Kilronan harbour on Inishmore island in the Galway Bay.

moored in Kilronan

hanging out in Kilronan, Inismore

Within a few days we had repaired the main yard with a metal bar lashed to the break but the winds to sail out of Galway Bay and down the south-western corner of Eire were no longer in our favour. With no good forecast in the horizon we decided to take the ferry to Galway and the bus back home to Wales for rest. At this point Alison when up to Scotland for a writing course and within two weeks I was back in Kilronan with a good fair north-easterly breeze.

Great Skellig Little Skellig

Sailing past Great Skellig and Little Skellig, SW Eire

The next few days I sailed around to Cork harbour stopping one night Glandore bay by Union Hall  and the next night anchored of the beach just south of Courtmacsherry before heading into my winter mooring in Drake’s Pool upriver from Crosshaven.

junk rig fan up problem

Yard and top batten snagged after fan up

The sail from Glandore to Courtmacsherry was a particularly brisk one with 20+ knots from the south-west. This made for a fast sail with a reefed main but as can happen in these conditions the main yard and top batten got caught up on the wrong side of the topping lift and mast lift due to a ‘fan up’ when gybing.

This is not as dire as it may sound. Even with a sail hung up on the topping lifts you can sail for many miles and directions without issue. To get the sail untangled you have to come to a stop tho and let the sail weathercock. At that time you have to go up on deck and get the yard and/or batten back into its rightful crib – usually accomplished by a long pole.

fan up junk sail

lower view of fan up snag

Although not debilitating to the sailing ability of the boat, having your sail jammed after a fan up gybe is somewhat disconcerting and should be avoided if possible.

It was not until reading a article by Arne ‘cambered sails’ Kverneland (Stavenger, Norway) in October’s Junk Rig Association magazine that I fully grasped the dynamics that leads to fan ups and jammed yards and battens on the wrong side of the topping lift.

The strong wind (.. a fan-up is a strong wind
phenomenon…) may be enough to grab the upper panels and force the top section and yard over, …   Fan up preventer,  JRA magazine, issue 69

junj rig fan up preventer line

Arne’s fan up preventer line plan

Having experienced two other fan up jams last summer, one from sailing back to Lochinver from Mull in 20+ knots and another when sailing down to Tory island in September, I was getting perturbed by the events and am now planning to incorporate Arne’s fan up preventer (FUP) line.

Having brought both sails back home in December for repairs and strengthening, it is an ideal time to incorporate this preventer line. As much as I dislike adding too many running lines into the rig, this one extra seems worth it.

The solution lies in tightening up the fan up prevention line when reefed so the sail cannot ‘fan up’ without taking the entire sail bundle with it. This should prevent fan ups in everything but hurricane force winds. Or so I hope. I be able to report on its effectiveness when I go out sailing in stiff breezes this summer.

Many thanks to Arne for sharing his ideas (although I’m still sticking to flat sails!)