Puzzled by motorsailing techniques in Christchurch Bay.

You say it was a brisk F4. So, I'm assuming the sea state was at least "moderate".

Maybe they had a problem hoisting the main. Lost the shackle connecting main to halyard. Halyard disappeared to top of mast. Sail torn. Who knows.

So they planned to motor home to get it fixed. In a moderate sea, motoring with no sail to steady the boat would have been unpleasant. The genny might have provided some dampening effect.

Just conjecture. But I never try to second guess why other people appear to be doing something strange. Maybe they had a reason neither you nor I have thought of.

On "several" boats on the same route?
The sea state was moderate +.
 
On "several" boats on the same route?
The sea state was moderate +.

Ah! No. Unlikely.

Not knowing which way the wind was blowing, I got a bit lost in your OP as to whether the "several" boats were the ones going to windward or sailing downwind. Having reread it, I now see what you were saying.
 
I don't see the problem here. These sailors were out on their boats, choosing the combination of sail and motor that most suited them on that course in the conditions. The implication that this is bad seamanship or lazy sailing is a nonsense.

Why should anyone standing on the cliffs have any valid opinion unless the sailors' actions were either putting themselves or others into danger, in which case the onlooker could have a vital role.

For what it's worth, I will motorsail at times with main only or at other times genoa only, or a combination of both. At other times I will enjoy a full blooded beat across the bay. It's really up to me and how I feel, who I've got on the crew, how my boat is handling the sea and what I want to do.

And no, I wasn't one of the boats on the day in question, but when I next go across Christchurch Bay, I'll give you a wave and wish you a pleasant walk.
 
I have been guilty as charged of all those infractions this year, though I admit I was not aware that it was going to cause upset to any spectators.
In defence I would offer-
1 The wind this year has been unusual in its gentleness
2 I am a lazy b. who just does what suits me at the time.
3 The third member of our crew is elderly, infirm and has lost his agility so we tend to pander to him; anyway, the vet. says he will not be around for much longer.
 
Motoring into a F4 on the nose the last thing I'd want is a mainsail flapping like mad and a boom rattling and swinging around just over my head, especially as all it would be doing is creating extra windage to slow me down - the noise alone would drive me round the bend. I might leave a foresail up (to cut down rolling) as that's further away from me. If the wind is truly on the nose though all any sail will do is give some extra windage to help be blown backwards.
 
With my old boat (starlight 39) sailing down wind we always had the main up. The boat was simply brilliant down wind. I also loved using a preventer and polling out the genoa a beautiful secure way of sailing and the autopilot seemed to love it.
 
Unless one is a complete numpty, halliard shackles will be captive keypin jobs on hard eyes, so no chance of losing them over the side, or that as an excuse for not using the main when one is supposed to be sailing to windward.

Off the wind,using gybing legs on broad reaches seems best, but nearer straight downwind goosewinged is OK as long as the Windex / reliable instruments / wool telltales on the shrouds are kept pointing towards flow into the main - which is actually sheeted IN a bit so as to direct airflow onto the foresail; this is close to an accidental gybe so attention is required, maybe after a while if the trip distance allows pole out the chute.
 
I don't see the problem here. These sailors were out on their boats, choosing the combination of sail and motor that most suited them on that course in the conditions. The implication that this is bad seamanship or lazy sailing is a nonsense.

Why should anyone standing on the cliffs have any valid opinion unless the sailors' actions were either putting themselves or others into danger, in which case the onlooker could have a vital role.

For what it's worth, I will motorsail at times with main only or at other times genoa only, or a combination of both. At other times I will enjoy a full blooded beat across the bay. It's really up to me and how I feel, who I've got on the crew, how my boat is handling the sea and what I want to do.

And no, I wasn't one of the boats on the day in question, but when I next go across Christchurch Bay, I'll give you a wave and wish you a pleasant walk.

So, you motorsail directly into wind with a headsail up then?
I'll wave back, watching you getting your rig beaten up.
 
Same here. With the wind over the quarter, hoisting the main only stops the jib working. Last year I managed a four week trip around the west coast, including two circumnavigations of Mull (in opposite directions) hoisting my nice new mainsail precisely twice. Gentlemen do not beat to windward.

Interesting as we’ve just had a few weeks on board and sailed a fair few miles without tacking once. We did gybe downwind a few times (keeping wind in the Genoa with the main up). We also sailed a tiny bit under Genoa only.
 
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I understand that the state known locally as 'Summer' may have been occurring at the time? If so, perhaps the mainsails were stowed to prevent their casting a shadow over part of the cockpit and thereby causing less sailing-orientated crew to freeze?

An idea: Fit a bimini over the cockpit, then some electric patio heaters and a few UV lamps beneath...
 
The main is provided for several good reasons, and will aid balance on the helm as well as a lot of drive by the ' slot effect ' between even a slightly overlapping foresail and the main.

The 'slot effect' was an incorrect hypothesis about how two overlapping sails work. It was debunked almost fifty years ago. Which doesn’t stop it being shown in lots of sailing books written by people who may be practically great sailors, but don’t understand why it works.
 
The 'slot effect' was an incorrect hypothesis about how two overlapping sails work. It was debunked almost fifty years ago. Which doesn’t stop it being shown in lots of sailing books written by people who may be practically great sailors, but don’t understand why it works.

Here you go, published in 1973 in Sail magazine...

https://www.google.co.uk/url?sa=t&s...f-magazines/4-Another-Look-at-Slot-Effect.pdf

Two sails slows down the wind velocity in-between the sails, so the Venturi effect is a myth.
 
Unless one is a complete numpty, halliard shackles will be captive keypin jobs on hard eyes...

Nope, don't have any of them, so I'm a complete numpty. Plain old shackle on headsail halyard & snap shackles on asymmetric & main seem to work for me.

I reckon this counts as another instance of Andrew's rule... if it's not on his boat, is his boat, or invented since 1978, it's pants - or in this case - you're a complete numpty.
 
Unless one is a complete numpty, halliard shackles will be captive keypin jobs on hard eyes, so no chance of losing them over the side, or that as an excuse for not using the main when one is supposed to be sailing to windward.
Andy,I do not get the "supposed" bit. It seems that you are suggesting that one MUST sail. However, if one chooses to motor i see nothing wrong in that. Just because one has a yacht it does not mean that with a modern diesel one cannot start the engine, engage autopilot, and enjoy the trip as a pleasant motor up wind rather than a thrash sitting on ones's ear with the decks awash.
obviously one might not do this all the time but there are instances where it may be infinitely preferable and in my book there is nothing wrong in using the engine for a bit of lazy propulsion. Of course my engine is quiet and does not belch great clouds of black fumes down my nostrils. If the engine is there then why not use it to ones advantage
 
Indeed - why not!
As you can see - the Genoa is on the point of collapse, being blanketed by the main and wouldn't allow me to sail along my desired course without goosewinging - which in rolling seas I am not keen on!
 

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Walking the dog on Gilkicker this morning while it was blowing a good 4/5 from the west most of the boats I observed heading towards Portsmouth were under headsail alone downwind obviously
 
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