Correct the courses for Deviation, Variation and Leeway, and find the Course and Distance from the given Point, and the Latitude and Longitude in by inspection. 4-1876, August 1st. In longitude 50° 40′ E. The observed meri dian altitude of the Sun's Lower Limb was 64° 32′ 15′′ bearing South, index error + 1' 5", height of eye 12 feet. Required the latitude. 5-In latitude 36o 14' N. the Departure made good was 496. Required the Difference of Longitude by parallel sailing. 6-Required the course and distance from Cape Ray to Scatteri, by calculation on Mercator's principle. 1 Lat. of Cape Ray 47° 37′ N 46 2 N Long. 59° 18' W 1-Find the time of High Water A. M. and P. M. at the following places: 1875, May 28th, at S. Ives G. B. 66 July 3rd, at Nagasaki, in Long. 129° 52′ E. 2-1876, April 29th, At 5h 0m A. M. Appt. T. Ship in latitude 47° 12′ N., longitude 160° 12′ E. The Sun's Magnetic Amplitude was N. E. N. Required the True Amplitude and Error of the Compass, and supposing the Variation to be 4° 20′ E., required the Deviation of the Compass for that position of the Ship's head. 3-1876, November 12th, at 4h 3m P. M. Mean Time at Ship, in latitude 0° 12′ 16′′ S., longitude 61° 57′ 30′′ E. The observed altitude of the was 23° 50′ 40′′ height of eye 15 feet. Time by a Chronometer 1h 27m 5s which was fast 1h 2m 21s for mean noon at Greenwich on May 1st and on June 1st was fast for mean noon at Greenwich 1h 7m 0s. Required the Longitude by Chron meter. 1-1876, June 4th, Mean Time at Ship at 5h 25m, in latitude 27° 39′ N., longitude 38° 16′ W. The Sun's bearing by Compass W. S., altitude ☎ 18° 21′ 45′′. Height of the eye 14 feet. Required the True Azimuth and Error of the Compass, and supposing the Variation to be 15° 36′ W., required the Deviation of the Compass for that position of the Ship's head. 2-1876, May 16th A. M. at Ship; latitude by account 31° 50' S.; longitude 87° 54′ 35" W. The observed altitude of the Sun's L. L. North of the observer was 38° 22′ 40′′, height of eye 12 feet. Time by watch 10h 33m 55s which had been found to be slow 1h 2m 18s of apparent time at Ship. The difference of longitude made to the East was 14 after the error upon Apparent Time at Ship was determined. Required the Latitude by the Reduction to the Meridian. 1-1876, November 12th. The observed Meridian Altitude of the Star & Ophiuchi bearing North was 45o 26′ 0′′, height of the eye 10 feet. Required the Latitude. 2-Deviation of the Compass. (7) In the following table give the correct magnetic bearing of the distant object, and thence the deviation: (8) With the deviation from the Curve at the end of the book, give the courses you would steer by the Standard Compass to make the following courses, correct magnetic. Correct magnetic courses, N. N. E.; N. 47 W. (9) Supposing you have steered the following courses by the Standard Compass, find the correct magnetic courses made from the above deviation table. Compass courses, N. E.; South. (10) You have taken the following bearings of two distant objects by your Standard Compass as above; with the Ship's head at S. E., find the bearings, correct magnetic. Compass bearings, West; North. SET No. 2. 1-Multiply 682 by 543-21 by common logarithms. 2-Divide 73829 by 55-555 by cemmon logarithms. Correct the Courses for Deviation, Variation and Leeway, and find the course and distance from the given Point, and the Latitude and Longitude in by inspection. 4-1876, September 22nd. In longitude 60° 13′ 30" W. The observed meridian altitude of the Sun's Lower Limb was 39° 19' 0" bearing South, index error - 0' 26", height of eye 19 feet. Required the latitude. 5—In latitude 18° 18′ S. the Departure made good was 14 miles. Required the Difference of Longitude by parallel sailing. 6-Required the course and distance from Panama to Hobarton, by calculation on Mercator's principle. Lat. of Panama 8° 57′ S Long. 79° 31' E Long. 147 22 E I-Find the time of High Water A. M. and P. M. at the following places : 1875, January 8th, at Southampton. February 20th, at Basrah Bar in long. 47° 40′ E. 2—1876, February 15th at 6h 36m A. M. Appt. T. Ship, in latitude 34° 14′ N., longitude 15o 36′ E. The Sun's Magnetic Amplitude was S. E. by E. E. Required the True Amplitude and Error of the Compass, and supposing the Variation to be 13° 0′ W. required the Deviation of the Compass for that position of the Ship's head. 3-1876, April 26th at 2h 28m P. M. mean time at Ship, in latitude to 56' N. longitude 78° 53′ E. The observed altitude of the was 50° 55′ 40′′, height of eye 26 feet. Time by a Chronometer 8h 9m 0s which was slow for mean noon at Greenwhich 59m 36s on November 12th 1875 and on November 30th 1875 was slow 59m 59s for mean noon at Greenwich. Required the Longitude by Chronometer. 1-1876, August 18th Mean Time at Ship, at 10h 35m, in latitude 26° 15′ 21′′ S., longitude, 93° 30′ W. The Sun's bearing by. Compass N. by W., altitude 45° 10′ 30′′. Height of the eye 18 feet. Required the True Azimuth and Error of the Compass, and supposing the Variation to be 13° 40′ E., required the Deviation of the Compass for that position of the Ship's head. 2-1876, April 15th P. M. at Ship; latitude by account 46° 45′ S., longitude 79° 30′ E. The observed altitude of the Sun's L. L. North of the observer was 32° 40′ 10′′, height of eye 21 feet. Time by watch 7h 18m 46s which had been found to be slow 5h 14m 12s of apparent time at Ship. The difference of longitude made to the East was 15'7 after the error upon Apparent Time at Ship was determined. Required the Latitude by the Reduction to the Meridian. 1-1876, December 30th. The observed Meridian Altitude of the Star of Geminorum bearing South was 58° 40' 0", height of the eye 10 feet. Required the Latitude. |