Gunfleet's Question...

DeeGee

DeeGee

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Gunfleet\'s Question...

This posting is (sort of) on behalf of Nigel, as he wanted to nail it. Please see here and iuse 'next' for subsequent pages...

BTW, Nigel, you were technically a little wrong, here is the definintion of DR, from your favourite book...
[ QUOTE ]
Dead Reckoning is the expression used to describe that position obtained from the true course steered by the ship and her speed through the water , and from no other factors.

[/ QUOTE ] (original italics) which means that deviation and variation <u>are </u> applied.
 
Thanks ... and I have no issue with this at all ...

In fact I totally agree ...

I said course steered .......... and assumed that others would know that it is true course steered ...

My later post asking answer on a compass that has had a magnet or similar placed next to it is still valid - as the navigator would correct for Dev'n + Var'n and still accept is as true unless the "induced error" was sufficient to raise alarm ...


Again thanks ...
 
Re: Thanks ... and I have no issue with this at all ...

You must have read in the account of the inquest about the man's cabin, Denbigh, but perhaps your friend here has not heard of it. He had built himself a wooden outhouse -- he always called it the 'cabin' -- a few hundred yards from his house, and it was here that he slept every night after spending hours on his computer. It was a little, single-roomed hut, sixteen feet by ten. He was a man with missions, Denbigh, missions to inform the boating world of a new fangled device called a GPS. An aim to promte little boats and big latvian women. He had crossed oceans and always new precisely where he was. He kept the key in his pocket, made his own bed, cleaned it himself, and allowed no other foot to cross the threshold. There are small windows on each side, which were covered by curtains and never opened. One of these windows was turned towards the high road, and when the light burned in it at night the folk used to point it out to each other and wonder what SBC was doing in there. That's the window,Denbigh, which gave us one of the few bits of positive evidence that came out at the inquest.

"You remember that a stonemason, named Rocksoff, walking from Riga about one o'clock in the morning -- two days
before the post -- stopped as he passed the grounds and looked at the square of light still shining among the trees. He swears that the shadow of a man's head turned sideways was clearly visible on the blind, and that this shadow wals certainly not that of the Black Bustard, whom he knew well. It was that of a very fat man. So he says, but he had been two hours in the public-house, and it is some distance from the road to the window. Besides, this refers to the Saturday, and the crime was done upon the Friday.

This SBC was called to the inquest, Denbigh, as an expert witness to weigh the deceased because he was the best dead reckoner in Latvia!
 
Re: Thanks ... and I have no issue with this at all ...

Unknown to all the heathen scots, hammering away on the keys of the new-fangled instrument, across the seas and faraway in the region used to be called Gaul - sits a lonely brother in heart of said SBC. He uses a great light-bending telescope and peers back toward the land of his fathers and watches all that is happening. The dead reckoner was not actually dead, and the image seen by the peasant walking by, was not SBC, but his aunt-in-law. The peasant had actually forgotten his glasses, and the fact that it was a full moon was merely incidental to that. But not to SBC, nor to his Gaulish brother in heart, for this was the ideal time to adjust and compensate all the errors, systematic and random, in the new-fangled GPS. With the aid of a heavy tome, vastly authentic, a sextant and the moon - plus an out of date Norie - the job was done. The reckoner was no longer dead, and like Lazarus, sprung out his coffin. Singing...

<span style="color:green"> Come all you bold sea-faring men, and listen to my song
When you come off of them damn long trips, I'd have you not go wrong;
Take my advice, drink no strong drink and don't go sleepin' with no whore,
But get married, lads, and spend all night in, and use your GPS no more!</span>
 
Re: Thanks ... and I have no issue with this at all ...

The peasant glanced at the moon, it was not a pleasant sight. His teeth were crooked and so were his eyes. "Aye tis a full moon the nicht, erm tonight I mean" he muttered, I wonder what the pressure is so I can work out the height of tide exactly. Poor peasant , he was afraid to use the tide gauge in case someone knicked it!
 
Re: Thanks ... and I have no issue with this at all ...

Almost before his eyes, a great green ray lit up the path up and way from himself - ganning toward the distant horizon, but lost in the pale moonlight. He hauled up the muck-rake (standard issue to the peasants north of the border) and strad upward. Twas true, someone had nicked the tide-gauge, so the tide did not know where to go, nor did it know under what pressure the path had solidified, for solid it was - no longer boggy. The poor peasant, following the green light, had at last reached... England. He threw off his tawdry rags, and shewed his true self - General Guinness. Now he knew, it ill-behooves one to think of scotch in England, tis unknown, so welcome he was. Entering the first tavern he found, upon the floor, a GPS left by SBS; as he picked it up, he realised it was the new MP3 version, for again, he heard his jolly song....

All over bonny Scotland too,
The General is seen.
They've given him the freedom
Of the "toon" of Aberdeen.
From Inverness to Galashiels,
He keeps them warm and bright,
And they love to gather 'round him,
Och, on every <span style="color:orange"> moonlit </span> night.
 
Re: Thanks ... and I have no issue with this at all ...

SBC shook himself awake, again it was not a pretty sight, the wobbles of his upper thighs alone caused a small earth tremor across the pennine fault. "Ouch" he thought,"must lay off the mushrooms .. best to leave them for the reindeer in future!"
Straining his eyes and glancing at his chart he expected to be slightly north east of Copenhagen, but a glance at the nearest sign post showed him to be in a ditch just outside Cockermouth. "Oh Dear" he said "the wind was a bit stronger than I thought!" Never mind, he began to sing

We dig dig dig dig dig dig dig in a hole the whole day through
To dig dig dig dig dig dig dig is what we like to do

It ain't no trick
To post real quick
If you dig dig dig
With a shovel or a pick
In a hole (In a hole)
In a hole (In a hole)

When a million GPS's
work

We dig dig dig dig dig dig dig from early morn to night

Hi ho, Hi ho
It's home from work we go
Hi ho, Hi ho, Hi ho

Hi ho, Hi ho
Hi ho, Hi ho
Hi ho, Hi ho
Hi ho, Hum
 
Re: Gunfleet\'s Question...

Thanks. Very interesting stuff. I will read it carefully but that may take some time! I had no idea how much of a theoretical hornet's nest I was stirring but it's been really interesting to read people's answers, especially those of expert navigators.

Dunno what you and wee J are on in this thread...
 
Re: Thanks ... and I have no issue with this at all ...

Och, jimi, ye're wearin me doon. The Gaul-ish member threw down his GPS, MP3 player and all, and drew out his trusty oyster-knife. Now, is it to be a dozen or just half. Green lights and shadows on the wall, but bejesus, we'll go for the whole dozen. With a splashdown of entre-deux-mers, sleep was induced within the hour. Where o where did we put the pottery - I love pottery. This is pottery about jimi...is this you?

"If ever you return to Scotland again,
Tell my dear father I'll never return,
And alas my poor mother, that long may she mourn,
For her young son Foyer will never return."
 
Re: Thanks ... and I have no issue with this at all ...

The sun was shining on the sea, Shining with all his might: He
did his very best to make The billows clean and bright -- And this was odd,
because it was The middle of the night. The moon was shining sulkily, Because
she thought the sun Had got no business to be there After the day was done --
"It's very rude of him," she said, "To come and spoil the fun!"
The sea was wet as wet could be, The sands were dry as dry. You could not see a
cloud, because No cloud was in the sky: No birds were flying overhead -- There
were no birds to fly. The Walrus and the Carpenter Were walking close at hand:
They wept like anything to see Such quantities of sand: "If this were only
cleared away," They said, "it would be grand!" "If seven
maids with seven mops Swept it for half a year, Do you suppose," the Walrus
said, "That they could get it clear?" "I doubt it," said the
Carpenter, And shed a bitter tear. "O Oysters, come and walk with us!"
The Walrus did beseech. "A pleasant walk, a pleasant talk, Along the briny
beach: We cannot do with more than four, To give a hand to each." The
oldest Oyster looked at him, But never a word he said: The eldest Oyster winked
his eye, And shook his heavy head -- Meaning to say he did not choose To leave
the oyster-bed. But four young Oysters hurried up, All eager for the treat:
Their coats were brushed, their faces washed, Their shoes were clean and neat --
And this was odd because, you know, They hadn't any feet. Four other Oysters
followed them, And yet another four; And thick and fast they came at last, And
more, and more, and more -- All hopping through the frothy waves, And scrambling
to the shore. The Walrus and the Carpenter Walked on a mile or so, And then they
rested on a rock Conveniently low: And all the little Oysters stood And waited
in a row. "The time has come," the Walrus said, "To talk of many
things: Of shoes -- and ships -- and sealing-wax -- Of cabbages -- and kings --
And why the sea is boiling hot -- And whether pigs have wings." "But
wait a bit," the Oysters cried, "Before we have our chat; For some of
us are out of breath, And all of us are fat!" "No hurry!" said
the Carpenter, They thanked him much for that. "A loaf of bread," the
Walrus said, "Is what we chiefly need: Pepper and vinegar besides Are very
good indeed -- Now, if you're ready, Oysters dear, We can begin to feed."
"But not on us!" the Oysters cried, Turning a little blue. "After
such kindness, that would be A dismal thing to do!" "The night is fine,"
the Walrus said. "Do you admire the view?" "It was so kind of you
to come! And you are very nice!" The Carpenter said nothing but "Cut
us another slice. I wish you were not quite so deaf -- I've had to ask you twice!"
"It seems a shame," the Walrus said, "To play them such a trick.
After we've brought them out so far, And made them trot so quick!" The
Carpenter said nothing but "The butter's spread too thick!" "I
weep for you," the Walrus said: "I deeply sympathize." With sobs
and tears he sorted out Those of the largest size, Holding his
pocket-handkerchief Before his streaming eyes. "O Oysters," said the
Carpenter, "You've had a pleasant run! Shall we be trotting home again?"
But answer came their none -- And this was scarcely odd, because They'd eaten
every one
 
Re: Thanks ... and I have no issue with this at all ...

Come to my arms, my beamish boy!
O frabjous day! Callooh! Callay!"
He chortled in his joy.
 
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