Day 53 - Leg 4 Day 5 at Sea 'Battens and Vangs'

Seaduced
John & Jane Craven
Sun 16 Aug 2015 12:40
After the first day, the winds have been very light.  We are probably managing to sail for 75% of the time, but the going is very slow.
 
Thursday was my birthday, so Ant baked an upside down peach cake which went down extremely well.  This partially made up for the fact that a batten in the mainsail broke earlier which, although it won't stop us from sailing, it is a bit concerning that this is the 3rd batten that we have had to fix.  Also, we will need to wait until Cape Town when Jane is bringing us out some spares to make the repair.
 
Friday afternoon we found some oil on the deck under the vang, and inside the vang itself.  The vang is an adjustable support that goes from the bottom of the mast to the bottom of the boom and contains a spring loaded gas strut.  It serves two purposes: firstly, when the boom is let out over the side of the boat for downwind sailing, you can tension the vang which pulls the boom down to give the sail a better shape; secondly, when mainsail is furled away, (when the sail is out it holds the boom up), you can release the tension on the vang, the spring uncoils, and this holds the boom up.
 
Although we can still tension the vang for sailing, when we release the tension, it no longer holds the boom, which suggests that the gas strut may be damaged.  This makes it tricky when we want to furl the mainsail, as the boom wants to collapse on the bimini, which means that we need to put the topping lift on to hold up the boom, and a preventer on to hold the boom to the side of the bimini.  This is not an insurmountable problem but, when we were trying to put a reef in the mainsail at midnight last night with 25 knots of wind, it was challenging!!  There was a tremendous pressure on the sail and, due to the fact that we couldn't use the vang properly, it didn't furl as smoothly as it usually does.  The problem with the vang may possibly explain why we have been having trouble with breaking battens.
 
Anyway, we eventually managed to furl the mainsail and have been sailing for the past 18 hours with just the genoa.  The wind has settled down and we are managing to make an average of 8 knots, which is a respectable speed in the conditions. 
 
Ironically, the problem is that we need the wind to die down so we can unfurl the mainsail to check that it is OK after we last put it away, and also dismantle the vang to see if we can determine what the problem is.  I mentioned earlier that we had found some oil under, and inside, the vang.  This is puzzling us as the vang is gas filled and there shouldn't be any oil there.  Watch this space!!!