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Old 02 June 2011, 12:42   #11
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Do you remember last year when I took the helm of Jianna and threw her around a bit?

I didn't notice any noticable lean to port or instablility issues untill we were at 45 degrees in a tight turn to port when the back end let go a little.

Obviously it wouldn't have behaved the same as having one on board, but I thought all seemed fine?
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Old 02 June 2011, 12:44   #12
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Sea Trial

So, the time arrived to try out Jianna on the water. Going down the Lymington river I realised that I had done something as she listed to starboard, not much, and entirely appropriate to just me sitting to starboard. but I had not had that before!
I got out to the Solent and gave her the beans. There are many words that I could use but fantastic will do! Not a hint of a list, and she has that precision and surefootedness that was missing before - just brilliant. So, a completely successful result. A couple of weeks graft and worth every minute. I would not believe that Mr Newton could have such an effect on a dynamic system.
Personally, I doubted that this fix would be the answer.
I have been thinking about this, and moving 45Kg of batteries should not have changed the turning moment sufficiently to have such a dramatic effect, but I think the effect is actually 90Kg, as not only have I added 45Kg to starboard, but I have removed 45Kg from the port side. Yes I know I am being simplistic, as turning moment is force x distance, but the proof of the pudding .....
Fantastic
I think that bottle of Highland Park is in for it
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Old 02 June 2011, 12:49   #13
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Quote:
Originally Posted by Hightower View Post
Do you remember last year when I took the helm of Jianna and threw her around a bit?

I didn't notice any noticable lean to port or instablility issues untill we were at 45 degrees in a tight turn to port when the back end let go a little.

Obviously it wouldn't have behaved the same as having one on board, but I thought all seemed fine?
It's no wonder you didn't notice anything, you spent most of the time with the deck at 45 degrees
Seriously, come out for a spin sometime, and try the new improved Jianna..........
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Old 02 June 2011, 14:18   #14
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It's no wonder you didn't notice anything, you spent most of the time with the deck at 45 degrees
Seriously, come out for a spin sometime, and try the new improved Jianna..........
You're on

And congrats on getting the result you wanted.
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Old 02 June 2011, 17:50   #15
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I am surprised that moving the batteries a bit would have such an effect, does that mean it will be unsatisfactory again if you take a passenger?
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Old 03 June 2011, 02:43   #16
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I am surprised that moving the batteries a bit would have such an effect, does that mean it will be unsatisfactory again if you take a passenger?
As the boat gets loaded I am sure that the effects will be masked, but I suspect that I will still see an improvement in the 'feel'. Certainly the reverse was true - my eldest son, weighing in at something over 12 stone commented on the 'tilt' (to port) as he put it, and with him on board the boat still felt less surefooted than I would have expected.
Unfortunately I am going to have to wait for a little while before I can put this question to a practical test.
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