of reticulocytes in the peripheral blood red blood cells) can be considered a good sign. During the treatment, the doctor says retikulotsitarny crisis phenomenon, which is the accumulation of blood in the highest point of retikulotsitov.Na these exercises have been used, as a rule, 10 to 20 minutes. This lesson must be repeated twice a day (morning and evening). Repeated practice at night, take the first - "Ladoshki" is no longer in motion 4:08 respiration without stopping it. And so 12 times check out the post accutane right here 8 breaths, exercise, rest every "eight" 3-5 sekund.Dobavlyayte daily physical activity in the second half of the complex, but not extraordinary mastery of all basic uprazhneniya.Parilis too. Scraper led walls, scraping over carbon black and a spray of hot water to the hot water gang of stones, wherein the pair. This process is also called sound chernogo.U albumin content of 56.5 to 66.8%, 3.5-6.0% globulin 1, 2-globulin, 6.9 to 10.5% ??? - globulins from 7.3 to 12.5%? globulin from 12.8 to 19.0%.

The Call of the Sea 01872 580022 


The many uses of a Sextant

The many uses of a sextant

A brass sextant is a beautiful instrument with knobs, slides, vernier scales, mirrors, magnifiers, filters, lens and eye pieces. It’s a real historic instrument that is still in use today.

If you can use one of these then you have a very special skill and knowledge.

See Special Offer if you are learning to use a sextant. Details

Even today big ships are all required to carry working sextants and the navigating officers have regular routines to keep themselves familiar with making it work. Despite all the Global Positioning Satellites, gyro compasses and radio communications it is at the end of the day an instrument that does not require any electricity or power of any sort to make it work. So when all else fails a sextant can still work. Ok there is one other instrument you need when using a sextant and that’s a clock that keeps Greenwich Mean Time to a very high accuracy. Plus you will need celestial tables and a good understanding of how to use the tables or do the calculations from principles. Ah and oh yes you will also need to be able to see things, the sun, moon, stars or bits of land. Not that you will need to see them all at the same time but just one would be helpful.

Taking the noon day sight is the traditional way navigating officers found there position in the old days.

Very simply this is how it works.

If you knew when your local midday was and knew what Midday Greenwich Mean Time is you can tell how far away from the Greenwich Meridian you are. For instance Classic Sailing’s office is near as damn it 5 degrees West. So midday here is 20 minutes after those of you in London. Simple maths, there are 60 x 24 minutes in a day, 1440, minutes and there are 360 degrees going right around the world.  So for every degree its 1440 / 360 = 4 minutes. Thus 5 degrees West is 5 x 4 = 20 minutes. Which may explain why Cornwall is always a little backward!

So how do you know when it’s your local midday. That’s when the sextant comes into use.

Basically a sextant measures the angle between two things. In this instance it is the angle between the horizon and the sun.

So checking to see you have sun light filters in place you look through the sextant and adjust a mirror to superimpose the image of the sun and the horizon. (The filters stop the sun blinding you.)

Watching carefully you will see the sun climb in the sky, keeping adjusting your mirror angle you will notice it stop climbing and begin to drop down again. Noting the time of the highest point gives you the local time of midday. In addition the angle of the sun will tell you how far south or north of the equator you are taking into account the date and various other considerations.

Moon and Stars 

So that is the most common usage of the sextant, but what if it’s cloudy and you can’t see the sun. Well that’s when you may need to wait until the sky clears at night time. Then you can take a sighting of a star or even the moon if you are very clever. Using your Nautical Almanac to work out where you are. 

The sextant is the development of an older instrument called a Falstaff which measured the angle of the sun form the length of its shadow but that was always a bit tricky at sea.  Indeed the sextant did not come into its own until accurate time could be kept but that’s another story.

Land Ahoy

So far we have mentioned measuring the angle between the horizon the sun, moon and stars but it can also be used on its side. For instance you are approaching land and you see two known mountain tops. If you measure the angle between them and use a compass to point to one of the mountain tops you can then use the compass bearing and the sextant angle to draw your position on a chart.

How far away

With the sextant vertical you can measure the angle created between the horizon and the height of a known object such as a lighthouse, hill or mountain top.  You do need to know the tidal height as well but you can then work out how far away from the observed object you are.

Chase me if you can 

In the old days when one vessel was chasing or being chased measuring the angle of the mast head from the horizon would tell you very quickly if the other vessel was getting closer or going further away and by measuring the difference over a short time you could learn how much slower or faster than you they were. Particularly useful when the other vessel is a long way off and judgment by eye alone is difficult.


If you watch my favourite film you will see it in practice, “Master and Commander – Far side of the World” staring Russell Crowe and adapted from parts of the amazing 21 book series by Patrick O’Brian.


Bessie Ellen Deep Sea RYA Yachtmaster Ocean Qualifying Passage.

We have a limited number of berths for Watch Keepers seeking the RYA Yachtmaster Ocean Qualifying Passage from sailing Vigo to the Canary Islands on Bessie Ellen.

You will need to bring you own sextant and relevant nautical tables for this qualifying passage. Details from the RYA website 
Vigo to Tenerife Tuesday 30th October to Wednesday 14th November. Special Offer for Sextant and Non Sextant Sailors.
Now only £399 - Details BE234 HALF PRICE 


Latest news text: 
The many uses of a Sextant. This beautiful instrument with knobs, slides, vernier scales, mirrors, magnifiers, filters, lens and eye pieces. It’s a real historic instrument that is still in use today.

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