H.K.F. Courses. Winds. L W Remarks on board, Wednesday, Mar. 31,1824. E. S. E. South. 1 Pleasant gales and fair weather. 15 The variation and lee-way being allowed on both courses, it appears that the ship has made a due east course, the distance sailed 151 miles is the departure, and the difference of longitude is found by Case II. of Parallel Sailing. The latitude in is the same as yesterday's lat. 37° 55' N. Taking this as a course, and the departure 151 as difference of latitude, the distance which corresponds is the difference of longitude, 191 miles 3° 11′ E. Hence by case I. of Middle Latitude Sailing, the departure is found to he 1236 miles, the bearing of Funchal S. 80° 12' E. and the distance 1863 miles. H.KF. Courses. Winds. LW Remarks on board, Thursday, April 1, 1824. S. E. N. N. E. W. Funchal, S. 79° 51' E. S85024/E. 202 16 201 37 39/370 30 40 15 500 g' distance 1658 miles. TRAVERSE TABLE. Courses. Dist. N. S. E. 19.5 98.1 10.2 26.4201.3 Dep. Diff. Lat. 16.2 Yesterday's long. 54 28 W. With the mid. lat. 37° 42′ and the dep. 201.3, the diff. of long. is 255= 4 15 E. The latitude by observation differs 9 miles from the latitude by dead reckoning, but the longitude requires no correction on this account. HK. F. Courses. Winds. L W Remarks on board, Friday, April 2, 1824. Hence by Case I. of Middle Latitude Sailing, the bearing of Funchal is found to be S. 79° 50′ E. and its distance 1456 miles. HK.F. Courses Winds. L W Remarks on board, Saturday, April 3, 1824. Fresh gales and rainy weather; latter part clear. A great swell from the N. E. for which I allow 9 miles. TRAVERSE TABLE. Courses. Dist] N. E.IS. 220 SSW.W 9 Funchal S. 79° 50′ E. dist. 1240 miles. In this day's work the swell is consiS. E. W. dered as a current setting the ship 9 miles per day; and since the swell comes from the N. E. it must set the 7.7 4.6 ship S. W.and allowing the variation S. S.W. W. 9 miles, these are placed as a course and distance in the traverse table. 32.3217.6 D.lat 40.0217.6 4.6 With the difference of latitude and departure the course is found to be S. 79° 22′ E. and the distance 217 miles. Yesterday's latitude 36° 55' N. To find the bearing and distance of Funchal. 36 40 S. 15 N. Latitude in 36° 17' N. Longitude in 410 SF W. 16 54 W. Hence by Case I. Middle Latitude Sailing, the bearing of Funchal is found to be S. 79° 50′ E. and its distance 1240 miles. To find the bearing and distance of Funchal by Mercator's Chart. Having pricked off the place of the ship at noon, lay a ruler from that point to Funchal; take the nearest distance between the centre of the compass and the ruler; then slide one foot of the compasses along the edge of the ruler, keeping the other foot at the greatest distance from it, and it will be found to run nearly upon the E. by S. line, which is therefore the bearing of Funchal: then take in your compasses the extent from the place of the ship to Funchal, and apply it to the graduated meridian, setting one foot as much above one place as the other is below the other place, and the extent will be found to measure 20 degrees, or 1230 miles, which was the distance of the ship from Funchal nearly. HKF.Courses Winds L W Remarks on board, Sunday, April 4, 1824 The courses being corrected for lee-way and variation, will Courses. Dist. N. S. E. W. stand as in the adjoined traverse table. 35 26 To find the bearing and distance of Funchal. 1° 18' E. 41 54 W. In miles 1402 Hence by Case I. Middle Latitude Sailing, the bearing of Funchal is found to be S. 84° 17' E. and its distance 1174 miles. Ii |