December WNS Scenario

[ QUOTE ]
Someone's been reading the brief carefully

[/ QUOTE ]Nah, I rest my case, unless jfm was actually reading your mind.
Where did you even mention the length of the planned session?
 
tcm

Fantastic! Could be the basis for an award winning thesis entitled The Moral, Philosophical and Legal Issues of What Now Skip.

But rejecting the challenge is - in my book - always a valid solution to WNS scenarios as long as a valid alternative is put forward. In this case there are many - like go home, go to another pub, etc, etc.

/forums/images/graemlins/smile.gif /forums/images/graemlins/smile.gif

Cheers
TJ
 
jfm

Not really a pedant. I quite deliberately put in the 'runs N to S' rather than state the current direction directly. Can't make things too easy in this esteemed company, can I?

A WNS on geometry and resolution of forces? I'm not sufficiently up on that subject to write it, but would be delighted - seriously - if you would.

Best wishes
TJ
 
MapisM

[ QUOTE ]
[ QUOTE ]
Someone's been reading the brief carefully

[/ QUOTE ]Nah, I rest my case, unless jfm was actually reading your mind.
Where did you even mention the length of the planned session?

[/ QUOTE ]

I think he was referring to anchoring in a narrow fairway with the tide due to turn shortly. I promise I will never directly place limits on a drinking session in a WNS scenario.
/forums/images/graemlins/grin.gif

Cheers
Tjay
 
[ QUOTE ]
I quite deliberately put in the 'runs N to S'

[/ QUOTE ]Hmm...
Tbh I was also in doubt, since 'runs North/South' is what you said, not actually 'runs N to S'.
Maybe I'm also pedant, or it's my lousy English, but it just isn't the same methinks.
 
Thanks Tony,

We agree I made the Pub on time and without any damage to my boat but you infer only a partial success /forums/images/graemlins/grin.gif


Cheers
Pete
/forums/images/graemlins/smirk.gif
 
[ QUOTE ]
I promise I will never directly place limits on a drinking session in a WNS scenario.

[/ QUOTE ]Faerenuff, as long as you stick to this principle, you're allowed to throw at us the weirdest wns you can think of!!! /forums/images/graemlins/smile.gif
 
I've got it
/forums/images/graemlins/smile.gif

1) drape an old sheet over your stern to hide boat name ( I fold an old Charlie's Angels bed spread in half)

2) pass the mooring poles at 10 knots to take a closer look.

3) remove sheet and return to find the Poles now vacant as the washing lines snapped thanks to your wake on the reconnaissance pass.

/forums/images/graemlins/grin.gif
 
No-one's yet addressed why the dory's lines are bar taut. My theory is that the dory was tied up near high water, with the rings near the top of the piles. The lines have become bar taut because it's now nearly low water but for some reason, the rings are still stuck to the top of the piles.

To slacken the lines you need to get alongside one or both of the piles and release the ring. They may simply have been tied up by their retrieval lines.

Let's assume both rings have got stuck at the top of the piles. If you go alongside the uptide one, could you reach the ring from the flybridge? If so, feed your bow mooring warp through it and then lower the ring down the pile. The dory's lines would slacken, allowing some space to go alongside. Let your boat drift down to the other pile, check and make fast your bow rope (can your crew do this - if not, tie it on somewhere up by the flybridge), pop down to your stern platform and make fast to the other pile as best you can. You might be able to forget about the other ring if it didn't come down when the dory's ropes slackened, and if you couldn't reach it, you could just take a line right round the pile (you do have long arms don't you?), or round whatever the ring runs up and down on.

You might need to do this in more than one stage, eg go alongside each pile and free each ring one at a time. Then you can go moor up in a separate evolution, tying up temporarily to the dory if its lines are strong enough, or lassoing the first pile from the flybridge and drifting back on the second or whatever.

I've expressed this in the second person because I don't have or experience of a 40ft flybridge cruiser; and it rather depends on how accessible the piles would be from the flybridge deck.
 
"The only problem with this is that the dory's lines are looped back through the ring and secured to a (I suppose I should have specified this) central cleat. Not sure a non-confident crew member would wish to lean over that far. "

Blimely, goal post are moving fast here, you come up with a reasonable solution and then a spanner in the works with the magically moving cleats /forums/images/graemlins/grin.gif

Well my ultimate solution which involves no risk to me or the crew is to call up HMC&E tell em you've seen a pile of white'ish powder in bags in the bottom of the dory, by jiggery you wait and see how fast that dory will get shifted by men in anti stab vests in pump up boats and they won't be prosecutable for cutting its lines cus they were acting the public's interest. there ya go, job done.
/forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif
 
So, do you mean that my English wasn't so lousy after all?
Though the transitive property confirms that I'm also pedant I reckon...
 
just to make sure on the ground rules, and trig help for TJ

We can't move the dory at all, right? Or can we only move it by tony-with-the light-grasp of mech-eng amounts?

The loines are bar taut, right at their limit. That means that if you get in between those piles and pull your lines tight, then ipso facto you have pushed the dory to one side. Oh yes, it's only an F2 and sure most people would be able to puit lines on and go back and get other lines on BUT as it reads, you aren't allowed alongside that dory.

For reference by tony, the 1/cosine graph runs something like 1.5%, 6%, 15% for 10 degrees, 20 degrees and 30 degrees of push-out of that dory.

But it reads that even an increase of 1.5% (10 degrees) is unacceptable.

10 degrees is under 2 metres sideways for every 10 metres of length and we might assume that there is at least 20metres of length between piles. In other words, moving that dory sideways will increase the forces by about 1.5%, pretty much sod all.

BUT again, moving that dory sideways not allowed. I spect he's gonna park above it....
 
MapisM

OK. I will reluctantly accept than 'runs N/S' is perhaps mildly ambiguous and 'runs N to S' is more precise. Score one 'Gottcha'.

/forums/images/graemlins/tongue.gif

Cheers
TJ
 
[ QUOTE ]
Sorry Tony, missing some facts here, before attempting to answer;

1) What is the distance between the poles?
2) which way is the dory moored (Bow to North or South)?
3) Distance from pile 1 to what point of dory? (can then estimate distance to other pile ... and if one of the points to the dory is close to pile, I do not have a choice of which rope I need to loosen... )

All good questions.
I meant to mention that the distance between the piles is about 45 ft. The dory is 17ft and located in the middle of that space. It is moored bow north.
You may also wish to know that it is littered with fishing gear and there are several empty beer cans and a half-eaten sandwich in the bottom and it stinks like only a fishing boat can. (This last is added just for a bit of extra atmosphere; not relevant to your actions).

Cheers
TJ
 
Re: just to make sure on the ground rules, and trig help for TJ

tcm,

[ QUOTE ]
For reference by tony, the 1/cosine graph runs something like 1.5%, 6%, 15% for 10 degrees, 20 degrees and 30 degrees of push-out of that dory.

But it reads that even an increase of 1.5% (10 degrees) is unacceptable.

10 degrees is under 2 metres sideways for every 10 metres of length and we might assume that there is at least 20metres of length between piles. In other words, moving that dory sideways will increase the forces by about 1.5%, pretty much sod all.

[/ QUOTE ]

I see your point. I wonder what the sideways force exerted on the dory would be if you were to simply attach your bow line to the northerly pile and let the forces of wind and tide do their thing? I was kind of looking for a technique in which you either didn't apply such a force to the dory or managed to 'adjust or alter' (hint) its lines so you didn't put any sideways force on it.

My 'personal preference' solution was suggested early on. But there are - as always - valid alternatives.

Best wishes
TJ
 
OK, at the risk of boreing every one to death. You go and anchor directly upstream of the piles, then drop back, nut useing engines, back up at say 45deg away. Once oposite dory, tell nummy to drop the kedge anchor and pay it out, till your alongside, then tie off, so your not actually touching the dorry. Now you jump om the dory and sort it out.

I hope they sell some bloody good beer at this pub.
 
Daka

And then you standby to repel boarders: all the angry owners of the boats rafted up on the pontoon who are now on their way out in the pub launch to 'ave a word'.

/forums/images/graemlins/laugh.gif

Nice idea though.
TJ
 
[ QUOTE ]
You put "runs North/South", not "North to South". Now I'm being a pedant :-)

[/ QUOTE ]

Unfortunately I have already conceded ambiguity to Mapis M, so you may also have one 'Gottcha'. Dont spend it all at once.

Cheers
TJ
 
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