# Text-book on Navigation and Nautical Astronomy

Longmans, Green and Company, 1918 - 438 σελίδες

### Τι λένε οι χρήστες -Σύνταξη κριτικής

Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.

### Περιεχόμενα

 PART 1 recommended to consult a recognised School TextBook 5 0 33 SOLUTION OF PLANE TRIANGLES 49 SOLUTION OF SPHERICAL TRIANGLES 60 THE SAILINGS 71 TIDES 93 TIME 107
 LONGITUDE BY CHRONOMETER 183 THE CHART 195 USE OF NAPIERS DIAGRAM 208 XXIII FINDING ERROR OF CHRONOMETER 241 XXV 250 PART II 263 XXVII 271 MERRIFIELD 278

 ELEMENTS FROM THE NAUTICAL ALMANAC 117 SIDEREAL AND SOLAR TIME 127 CORRECTION OF ALTITUDES 139 LATITUDE BY MERIDIAN ALTITUDE 153 COMPASS ERROR BY AMPLITUDES 168
 LIVERPOOL 1918 293 SYLLABUS 299 MISCELLANEOUS PROBLEMS 341 GREAT CIRCLE SAILING 422

### Δημοφιλή αποσπάσματα

Σελίδα 373 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30£ square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Σελίδα 373 - Measure 12 inches (in.) = 1 foot (ft.) 3 feet = 1 yard (yd.) 5-j yards = 1 rod (rd.) 320 rods =1 mile (mi...
Σελίδα 299 - Northern hemisphere ; and what effect has it on the assumed position of the ship when she is steering on Northerly, and also on Southerly courses ? 17. The effect being as you state, on what courses would you keep away, and on what courses would you keep closer to the wind, in order to make good a given Compass course ? 18.
Σελίδα 308 - ... 16. State to which side of the ship, in the majority of cases, is the North point of the Compass drawn in the Northern hemisphere ; and what effect has it on the assumed position of the Ship when she is steering on Northerly, and also on Southerly courses ? 17.
Σελίδα 28 - The angle between the first and last directions of a ray which has suffered two reflections in one plane is equal to twice the inclination of the reflecting surfaces to each other. Let AB be the limb or graduated . arc, of a portion of a circle 60° in extent, but divided into 120 equal parts. On the radius CB let a silvered plane glass D be fixed, at right angles to the plane of the circle, and on the moveable radius CE let another such silvered glass, C, be fixed.
Σελίδα 44 - We have, then, that the sine of an angle is equal to the cosine of its complement, and conversely.
Σελίδα 373 - TABLE. 16 drams, (drs.) make 1 ounce, - marked - oz. 16 ounces ----- 1 pound, ----- lb. 28 pounds - - - , - - 1 quarter, ----- qr. 4 quarters ----- 1 hundred weight, - - cwt. 20 hundred weight - - 1 ton, ------ T.
Σελίδα 297 - Certificate is to answer correctly at least eight of such of the following questions as are marked with a cross by the Examiner. The Examiner will not mark less than 12 : — . I 1.
Σελίδα 308 - Determine the deviation, and name it east or west. 35. If an ordinary standard compass placed higher than the iron top sides be compensated whilst the ship is upright, what coefficient will be affected by heeling ? 36.
Σελίδα 307 - Compass to make the following courses, correct magnetic. 9. Supposing you have steered the following courses by the Standard Compass, find the correct magnetic courses made from the above deviation table.