| Naval art and science - 1851 - 830 pages
...observe and calculate the amplitude of the sun, and deduce the variation of the compass therefrom. He must know how to lay off the place of the ship...a sextant and determine its error, and adjust it. In Seamanship. — In addition to what is required by a Second Mate, be must know now to moor and unmoor,... | |
| Trade Board of - 1850 - 690 pages
...amplitude of the eun, and deduce the variation of t lie compass therefrom. He must know how to lay oft* the place of the ship on the chart, both by bearings...a sextant and determine its error, and adjust it. In SEAMANSHIP. — In addition to what is required by a Second Mate, be must know how to moor and unmoor,... | |
| Janet Taylor - 1852 - 98 pages
...observe, and calculate the amplitude of the sun, and deduce the variation of the compass therefrom. He must know how to lay off the place of the ship...by bearings of known objects, and by latitude and latitude. He must be able to use a sextant and determine its error, and adjust it, and find the time... | |
| Janet Taylor - 1853 - 124 pages
...observe, and calculate the amplitude of the sun, and deduce the variation of the compass therefrom. Ho must know how to lay off the place of the ship on the chart, beth by bearings of known objects, and by latitude and longitude. He must be able to use a sextant... | |
| Charles Joseph RICHES - 1854 - 64 pages
...amplitude of the sun, and deduce the variation of the compass therefrom. He must know how to lay oif the place of the ship on the chart, both by bearings...a sextant, and determine its error and adjust it. In SEAMANSHIP. — In addition to what is required by a second Mate, he must know how to moor and unmoor,... | |
| Edward J. Henessey - Astronomy - 1859 - 82 pages
...observe and calculate the amplitude of the sun, and deduce the variation of the compass therefrom. He must know how to lay off the place of the ship...high water from the known time at full and change. He must also be able to find the longitude by chronometer from an observation of the sun. IN SEAMANSHIP.... | |
| Richard Henry Dana - 1863 - 310 pages
...variation of the compass therefrom, and be able to find the longitude by chronometer by the usual methods. He must know how to lay off the place of the ship...and by latitude and longitude. He must be able to determine the error of a sextant, and to adjust it, also to find the time of high water from the known... | |
| Erasmus Thompson - Merchant marine - 1868 - 116 pages
...and calculate the amplitude and azimuth of the sun, and find the variation of the compass therefrom ; he must know how to lay off the place of the ship on the chart, both by cross-bearings and by latitude and longitude ; to find his longitude by chronometer, and be able to... | |
| Thomas Liddell Ainsley - 1869 - 450 pages
...of the compass therefrom, and be able to find the longitude by chronometer by the usual methods. Ho must know how to lay off the place of the ship on...and by latitude and longitude. He must be able to determine the error of a sextant, and to adjust it, also to find the time of high water from the known... | |
| Francis Davenant - 1870 - 354 pages
...observe and calculate the amplitude of the sun, and deduce the variation of the compass therefrom. He must know how to lay off the place of the ship...determine its error, and adjust it, and find the time of high-water from the known time at full and change. In Seamanship. — In addition to what is required... | |
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