The seaman's new daily assistant, exhibiting an easy and expeditious method of keeping a ship's reckoning at sea |
Aðrar útgáfur - View all
The Seaman's New Daily Assistant, Exhibiting an Easy and Expeditious Method ... John William Norie Engin sýnishorn í boði - 2018 |
The Seaman's New Daily Assistant: Exhibiting an Easy and Expeditious Method ... John William Norie Engin sýnishorn í boði - 2009 |
The Seaman's New Daily Assistant, Exhibiting an Easy and Expeditious Method ... John William Norie Engin sýnishorn í boði - 2009 |
Common terms and phrases
Africa afternoon tide ALDEBARAN Argo Navis Bay of Bengal Bearing and Distance BRITANNIA from ENGLAND Cape Finisterre COAST course and distance course steered Degrees Dep.||Dist Lat Deviation Diff difference of latitude difference of longitude Dist Dep Dist Lat Distance at noon distance column East ENGLAND towards MADEIRA EXAMPLE find the Course find the difference FOMALHAUT France Funchal give the course give the difference given place H. K. F. Courses Harbour Head Light high water Ireland Island Light Latitude and Departure latitude by observation Latitude left LATITUDES AND LONGITUDES Long Long.W Madagascar meridian altitude meridional difference middle latitude miles morning tide North OI.O opposite P.M. tide required Parallel Sailing Plane Sailing Porto Santo reckoning Reef right ascension River SHIP BRITANNIA ship's South standard port subtract sun's centre SUN'S DECLINATION Traverse Table true course Ursa Major W.Co West
Vinsælir kaflar
Síða 31 - Then, if the zenith distance and declination be both north or both south, add them together; but if one be north and the other south, subtract the less from the greater, and the sum or difference will be the latitude, of the same name with the greater.* EXAMPLE I.
Síða 34 - South ; but when the sum exceeds 90°, it is to be taken from 180°, and reckoned from the opposite point of the horizon, that is, from the North in North latitude, and from the South in South latitude. Thus, having the time of the star's transit, or passage over the meridian...
Síða 4 - When the latitudes are both of the same name, that is, both North or both South, subtract the less from the greater, and the remainder will be the difference of latitude.
Síða 23 - Take the distance between the ship and given place in your compasses and apply it to the side of the chart or graduated meridian, setting one foot as much above one place as the other is below the other place, the number of degrees between the points of the compasses will be the distance nearly. When the places bear north and south of each other this rule is accurate ; but when they bear nearly east and west, and the distance is large, it will err considerably ; but in general it is exact enough...
Síða 42 - The quantity of lee-way to be allowed will depend upon a variety of circumstances; as the mould and trim of the ship ; the quantity of sail she carries ; her velocity through the water, &.c.
Síða 11 - II. the difference of latitude and departure corresponding to each course and distance, and set them in their respective columns : then the difference between the sums of the northings and southings will be the difference of latitude made good, of the same name with the greater ; and the difference between the sums of the eastings and westings will be the departure made good, of the same name with the greater quantity.
Síða 5 - OF THE MARINER'S COMPASS. This instrument is an artificial representation of the horizon of any place. It consists of a circular card, divided into 32 equal parts, by lines...
Síða 2 - If the latitudes or longitudes are both in the same direction,!, e. both east or both west, both north or both south, subtract the les,s from the greater, and the remainder will be the différence.
Síða 2 - ... latitude is equal to the sum of the latitudes of both places. The FIRST MERIDIAN is an imaginary semicircle, passing through any remarkable place, and is therefore arbitrary. Thus, the British esteem that to be the First Meridian. which passes through the Royal Observatory at Greenwich ; and the French reckon for their First Meridian, that which passes through the Royal Observatory at Paris.
Síða 42 - ... making proper allowance for the variation. At the time of leaving the land, the bearing of some point or place is to be carefully observed, whose latitude and longitude are known ; which, together with the estimated distance of the ship from such point or place, is to be noted down on the log-board. This is called taking a departure. As the distance inferred from estimation is very susceptible of error, particularly in hazy weather, or when that distance is considerable, it will be advisable...