Depths and new Crouch buoys

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AliM

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The tide was really low on Saturday and Sunday - at Bridgemarsh it was even lower than Lisa's photo (a few post back) on Saturday morning.

Undaunted, we went off to Yokesfleet on Saturday afternoon, and managed to stay afloat when the tide went out, and out and out...

I thought the new buoys were on the 5m contour - well Crow showed only 2.4m as we passed in at LW on Sunday. Shortly after that, we stopped, quite gently, just 25m due south of Branklet (where our chart shows deep water). Our depth sounder said 2m, the lead, all around the boat said 1.2m (which is our draft). We sat there long enough for a cup of coffee, and then gently floated off and sailed home.

Moral - don't even trust the recent surveys!

It was actually a lovely sail, although we do question our sanity sometimes (it did snow, sleet and rain a bit, and there was slush and ice on deck)!
 
We've parked on that bit a few times, now have it marked on GPS.The edge of the channel is very steep between the lump and Branklet, it goes from about 1.5m to 8 or 9m in afew boat lengths.
Not sure where the good water is now, it used to follow the Wallasea shore very close to the sea wall, but recently found some lumps there also.
We now tend to follow the Foulness bank from Branklet then cut back to Crow and usually find enough water for our 1.8m draught.
I've seen the Crossrail survey boat doing runs across there, so we may get some better info soon.
 
I rather got the impression that the 5m reference was in relation to the Outer Crouch - not that it was specifically said like that. I don't think you can get 5m by Crow at CD anywhere?

I have to say you have better resistance to the cold than me.
 
AliM said:
The tide was really low on Saturday and Sunday - at Bridgemarsh it was even lower than Lisa's photo (a few post back) on Saturday morning.

Undaunted, we went off to Yokesfleet on Saturday afternoon, and managed to stay afloat when the tide went out, and out and out...

I thought the new buoys were on the 5m contour - well Crow showed only 2.4m as we passed in at LW on Sunday. Shortly after that, we stopped, quite gently, just 25m due south of Branklet (where our chart shows deep water). Our depth sounder said 2m, the lead, all around the boat said 1.2m (which is our draft). We sat there long enough for a cup of coffee, and then gently floated off and sailed home.

Moral - don't even trust the recent surveys!

It was actually a lovely sail, although we do question our sanity sometimes (it did snow, sleet and rain a bit, and there was slush and ice on deck)!
Click to expand...

Respect that you were out sailing.

Interesting about the depths, thanks.
 
If you have thermals, thick jumpers and trousers and at least two fleeces under your oilies, you may not be able to bend your limbs but you do keep warm! And there is always the deck saloon - we can sail from inside.
 
The pol.ac.uk site predicted (and recorded) between 0.2 and 0.5m below their expected depths throughout last week and the weekend, very probably due to the very high pressure, which got up to 1042mB. Yes, I know I'm a nerd!
 
AliM said:
The pol.ac.uk site predicted (and recorded) between 0.2 and 0.5m below their expected depths throughout last week and the weekend, very probably due to the very high pressure, which got up to 1042mB. Yes, I know I'm a nerd!
Click to expand...

tidal height is changed by 1cm for every 1mB change from 1013mB... Therefore 1042-1013 = 29cm....
 
Yes Larry but wot's a 'cm'? Wasn't that something that the tyrant and inventor of conscription and internment called Napoleon tried to foister onto the world but our brave lads dished him at four bras saying 'no! never!' Long live Greenwich Mean Time and the Nautical Mile.
 
tillergirl said:
Yes Larry but wot's a 'cm'? Wasn't that something that the tyrant and inventor of conscription and internment called Napoleon tried to foister onto the world but our brave lads dished him at four bras saying 'no! never!' Long live Greenwich Mean Time and the Nautical Mile.
Click to expand...

OK, just less than a foot!
 
That's all very well, but cm is a hundredth of a m, which is what our charts appear to have on them for depth.... You are obviously aware that GMT and UTC are different in any case... I'll work out for you what the in of mercury means in inches in dept... :)
 
botheras said:
That's all very well, but cm is a hundredth of a m, which is what our charts appear to have on them for depth....

I've heard of those modern charts. Never catch on. My boat was made in feet and inches. How can it use charts in ms. Anyway we BEAT him, init.:p

"You are obviously aware that GMT and UTC are different in any case..."

and so is Paris Mean Time. Don't make it right.:mad:

I'll work out for you what the in of mercury means in inches in dept... :)

Now finally! Now that would be handy since TG's barrowmeter reads in inches. Don't tell me they make cm barrowmeters now!:eek:
Click to expand...
;)
 
Well, I oiled the mainframe abacus and 0.075" Hg at 0C is equivalent to 1" tide at a base line atmos pressure of 29.913872851"Hg at 0C or 0.9"is roughly a foot....

AS far as UTC is concerned, that came about when the international time standard moved to the relationship with the wavelength of Caesium discharge... UTC has to undergo leap second adjustment to keep it aligned with the irregular rotation of the earth...
 
botheras said:
Well, I oiled the mainframe abacus and 0.075" Hg at 0C is equivalent to 1" tide at a base line atmos pressure of 29.913872851"Hg at 0C or 0.9"is roughly a foot....

AS far as UTC is concerned, that came about when the international time standard moved to the relationship with the wavelength of Caesium discharge... UTC has to undergo leap second adjustment to keep it aligned with the irregular rotation of the earth...
Click to expand...

Can we have that in cubits and related to HW at Ararat please ?
We've only been using S I Units in UK for 47 years, it's too early to commit to going metric yet.:D
 
botheras said:
Well, I oiled the mainframe abacus and 0.075" Hg at 0C is equivalent to 1" tide at a base line atmos pressure of 29.913872851"Hg at 0C or 0.9"is roughly a foot....

AS far as UTC is concerned, that came about when the international time standard moved to the relationship with the wavelength of Caesium discharge... UTC has to undergo leap second adjustment to keep it aligned with the irregular rotation of the earth...
Click to expand...

Oiling, discharge and irregular rotation - you had to bring sex into it.......

I'm sure UTC is something they do to milk.
 
nigelm said:
Phew ......I got lost about 10 posts ago :rolleyes:

I don't do the why's, how's , or wherefores the way I see it is there is either enough water or not - seemples ;) :D
Click to expand...

Yes we do seem to have gone off the original subject here:).
A phrase that sticks in my memory, can't remember where I read it,
"If the draught of your vessel exceedeth the depth of water, verrily thou art aground"
Try to remember that.
 
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