: Paper I. For Second Mate. 3. In latitude 33°, the departure made was 130m.: required the difference of longitude by parallel sailing. 4. March 20, 1854; long. 168° 45'W.; the observed meridian altitude O 62° 10' 40"; sun S. of observer; index error -1' 50%; eye 18 feet : required the latitude. Additional for Only Mate. 5. Compute the course and distance by Mercator's sailing, from Cape Voltas, lat. 28° 44'S., long. 16° 32 E. ; to Charleston, lat. 32° 41'N. long. 79° 53'W. 6. Jan. 6, 1854; at 6h 25m 329 A.M. apparent time at ship; lat. 15° 30°N.; long. 107°_37'W.; the sun's rising amplitude was. observed by compass to be E. 18° 20'S.; required the variation. 7. Jan. 6, 1854; required the A.M. and P.m. tides at Shields. Additional for Chief Mate. 8. Jan. 6, 1854, at 3h 40m 16* P.M. mean time at ship: lat. 52° 45'S.; long. 66° 56'W.; the observed altitude 38° 31' 40"; eye, 20 feet; sun's bearing by azimuth compass, S. 82° 50'W.; required the variation. 9. Jan. 6, 1854, P.M. at ship ; lat. 4° 30'N.; the observed altitude 0 30° 10' 45”; index error-1'9"; eye, 21 feet ; time by chronometer, 5d 18h 59m 59s, which had been found 7m 528 fast on mean time at Greenwich, Oct. 17, 1853, and losing 4s daily; determine the longitude. 10. Jan. 6, 1854, P.M. at ship; lat. by account 61° 45'S. ; long. 138° 8E. ; the observed altitude o near the meridian, 50° 4' 40" ; observer S. of the sun ; eye, 19 feet; time by watch, 5d 23h 59m 50% which had been found 3gm 46% slow on apparent time at ship; but the ship had made 16' diff. long. to W. since the error for apparent time had been ascertained ; required the true latitude. Additional for Master Ordinary. 11. Correct the following courses for the local attraction, as given at page 35, N.E.-E. by S.-S.S.W.–N. by W.-E.N.E. 12. Jan. 14, 1854 ; long. 20°W.; the observed meridian altitude of Sirius, (a Canis majoris,) being 37° 50' 20"; observer N. of the star; index error, +1'4"; eye 19 feet ; required the latitude. Paper II. For Second Mate. 3. In latitude 44', the departure made was 95m.; required the difference of longitude by parallel sailing. 4. March 20, 1854: long. 155°W.; the observed meridian altitude o 50° 10' 40": sun N. of observer ; index error -1'19"; eye, 18 feet: determine the latitude. Additional for Only Mate. 5. Compute by Mercator's sailing, the course and distance from Point de Galle, lat. 6° 1'N,: long. 80° 14'E.: to Zanzibar S. Point, lat. 6° 10'S. : long. 39° 15'E. 6. March 31, 1854, at 6h 2m P.M. apparent time at ship : lat. 6 6° 25'N.: long. 156°E.: the sun's setting amplitude was observed by compass W. 3° 40'S.: determine the variation. 7. Required the A.M. and P.m. tides at the Nore Light, on March 6, 1854. Additional for Chief Mate. 8. March 26, 1854, at 9h Om A.M. mean time at ship, lat. 43° 10'N.: long 52° 30'W.: the observed altitude o 32° 36' 45", bearing by azimuth compass S. 40° 30'E.: eye, 18 feet: required the variation. 9. March 28, 1854, P.M. at ship: lat. 20° 9'S.: observed altitude O 30° 10' 20": eye, 26 feet : time by chronometer, 28d Oh 4m 50s, which had been found 46 46fast on mean time at Greenwich, Nov. 29, 1853, and losing 4s daily: required the longitude. 10. March 5, 1854, A.M. at ship; lat. by account 33° 40'N.: long. 20° 1°W.: observed altitude o near the meridian 49° 50': observer N. of sun: eye 22 feet : time by watch 5d lle om 30s: the watch had been found 1h 21 n 145 fast on apparent time at ship, but, the ship had made 10' diff. long. to E. since the error for apparent time had been determined: required the true latitude. Additional for Master Ordinary. 11. Correct the following courses for local attraction, as given at page 35, East.-E.S.E.N.N.W.-W.S.W. 12. July 1, 1854: long. 87°E. : the observed meridian altitude of Antares, (a Scorpii) being 65° 45' 30": star N. of observer : eye 21 feet: required the latitude. : Paper III. For Second Mate. 1. Multiply 3009 by 4 by logarithms. 3. Iu latitude 50°, the departure made was 63m.: required the difference of longitude by parallel sailing. 4. April 6, 1854: long. 78°45'E. : the observed meridian altitude 0 47° 50'15”: observer S. of the sun : index error -1' 20": eye 19 feet: required the latitude. Additional for Only Mate. 5. Compute by Mercator's sailing, the course and distance from Angra Pequena, lat. 26° 38 ́S. : long. 15° 8'E.: to Cape St. Roque; lat. 5° 28'S. : long. 35° 17'W, 6. April 29, 1854, at 5h 32m A.M. apparent time at ship: lat. 25° 11'N.: long. 136 W.: the sun's rising amplitude was observed to be E. 24° 15'N.: required the variation. 7. April 4, 1854: required the A.M. and P.M. tides at Torbay. Adilitional for Chief Mate. 8. April 25, 1854, at 21 42m 10$ P.m. mean time at ship: lat. 48° 42'S. : long. 50° 40'E. : the observed altitude o 18° 21': bearing by compass N. 7° 10'W.: eye 19 feet: required the variation. 9. April 15, 1854, A.M. at ship: lat: 41° 1'N.: observed altitude o 35° 40': eye 20 feet: time by chronometer 150 61 " 405, which had been found 2in 1:48 fast on mean time at Greenwich, Jan. 25, and losing 5.58 daily : required the longitude. 10. April 21 1854, A.M. at ship: lat. by account 39° 53'N. : long. 6° 5'E.: the observed altitude © near the meridian 61° 27' 35": sun S. of observer : eye 18 feet: time by watch 210 oh 1m 50%. which was found 20m 50s fast on apparent time at ship, but the ship bad made 5' dil?. long. to E. since the error for apparent time had been determined : required the true latitude. Additional for Master Ordinary. 11. Correct the following courses for local attraction, as given at page 35, S.W.-N.W.-W.N.W.-South. 12. Dec. 3, 1854: long. 175°E.: the observed meridian altitude of a Arietis being 46° 20': star N. of observer: eye 20 feet : required the latitude. Paper IV. For Second Mate. 3. In latitude 57', the departure made was 91m.: required the difference of longitude by parallel sailing. 4. Sept. 23, 1854 : long. 166° 30'E.: the observed meridian altitude o 41° 30': sun N. of observer : index error +1' 19": eye 17 feet : required the latitude. Additional for Only Mate. 5. Required the course and distance by Mercator's sailing, from Port Jackson, lat. 33° 51'S : long. 151° 18'E.: to Acapulco, lat. 16° 51'N.: long. 99° 52'W. 6. July 28, 1854, at 7h 27m 30% A.M. apparent time at ship: lat. 47° 8'S. : long. 84° 15'W.: the sun's rising amplitude was observed by compass E. 42° 40'N.: required the variation. 7. Required the A.M. and P.M. tides, July 21, at Whitby. Additional for Chief Mate. 8 July 31, 1854, at gh 46m 308 A.M. mean time at ship: lat. 38° 18'N.: long. 65°W.: the observed altitude 43° 26' 10" bearing S. 78° 20'E. : index error -1' 12": eye 19 feet: required the variation. 9. July 29, 1854, A.M. at ship: lat. 40° 10'S. : the observed altitude © 17° 10' 40" : eye 24 feet : time by chronometer 284 22h 10m 40s, which was 9ın 45.5% fast on mean time at Greenwich, June 8, and losing 68 daily : required the longitude. 10. July 10, 1854, A.M. at ship: lat. by account 51° 43'N.: long. 30° 10'W.: observed altitude o near the meridian 59° 47': observer N. of the sun : index error —l' 13": eye 18 feet: time by watch 100 2h 10m, which had been found 2h 40 in fast on apparent time at ship, but the ship had made 10' diff . long. to W. since the error for apparent time had been ascertained : required the true latitude. Additional for Master Ordinary. 11. Correct the following courses for local attraction, as given at page 35, West.-N.E. by E.-S.W. by W.-E.N.E. 12. July 21, 1854: long. 118° 45'E.: the observed meridian altitude of the planet Jupiter being 69° 40' 10": observer S. of the planet: eye 21 feet : required the latitude. : Paper V. For Second Mate. 3. In latitude 40°, the departure made was 108m.: required the difference of longitude by parallel sailing. 4. Sept. 23, 1854; long. 90° 45'E.: the observed meridian altitude O 83° 40' 30": observer N. of the sun : eye 18 feet: required the latitude. Additional for Only Mate. 5. Required the course and distance by Mercator's sailing, from Cape Hatteras, lat. 35° 14'N.: long. 75° 30'W.: to Cape Frio, lat. 18° 23'S.: long. 12° 2'E. 6. Oct. 1, 1854, at 6h 13" A.M. apparent time at ship: latitude 47° 10ʻN.: long. 15° 30'W.: the sun'e amplitude at rising was observed E. 31°S.: required the variation. 7. Sept. 16, 1854: required the A.M. and P.M. tides at Brest Harbour. Additional for Chief Mate. 8. Sept. 2, 1854, at 3. P.M. mean time at ship: lat. 39° 30'8. : long. 37° 30'E. : the observed altitude o 26° 40' 35" : eye 18 feet: sun's bearing by azimuth compass N. 21° 10ʻW.: required the variatiou. 9. Sept. 1, 1854, P.M. at ship: lat. 2° 10°N.: the observed altitude o 28° 40': index error —47”: eye 22 feet: time by chronometer August 31d 23h 58m 49s, which had been found 15" 268 slow on mean time at Greenwich June 23rd, and losing 4.58 daily: required the longitude. 10. Sept. 16, 1854, A.M. at ship: lat. by account 42° 36'S. : long 137° 10'E.: the observed altitude o near the meridian 44° 10' 30": sun N. of observer : index error —2' 20": eye 19 feet: time by watch 162 Ob 2m 46', which had been determined 23" 10% fast on apparent time at ship, but the ship had made 14' diff. long. to W. since the error for apparent time had been ascertained; required the true latitude. Additional for Master Ordinary. 11. Correct the following courses for local attraction, as given at page 35, W. by S.-S. by W.-E. by S. S.-N.W.TW. 12. August 1, 1854 : long. 36° 15'W.: the observed meridian altitude of the planet Jupiter being 60° 30' 40": planet S. of observer: index error +1° 11": eye 18 feet ; find the latitude. e |