TRACKS FOB STEAMERS. 559 



Bound WESTWARD.— i^row February \st to August Z\st, both days 

 inclusive, from the Fastnet or Bishop Rock steer a course on the Great 

 Circle track, but nothing South of it, to cross the meridian of 47° W. in 

 latitude 41° 30' N. Hence, steer either by the rhumb line or Great 

 Circle (or even North of the Great Circle if an easterly current be encoun- 

 tered) to a position ofE Boston, or South of Nantucket lightvessel. From 

 the latter position, if bound to New York, steer for Fire Island Hght- 

 vessel ; or, if bound to the Delaware River, for Five Fathoms Bank South 

 lightvessel. 



From September \st to January Z\st, inclusive, steer a course from the 

 Fastnet or Bishop Rock on the Great Circle track, but nothing South of 

 it, to cross the meridian of 50° W. in lat. 44° N. Hence steer by rhumb 

 line or Great Circle to a position ofi Boston, or South of Nantucket Shoals 

 lightvessel, thence proceeding as above for New York or the Delaware. 



The approximate courses {true), and the distances in nautical miles, 

 along these routes, are as follows : — 



Northern Route {September 1st to January 3lst). — From the Fastnet to 

 long. 50° W., lat. 44° N., the distance by Great Circle is 1,668 miles, or 

 from Bishop Rock to the same position, 1,793 miles. Thence steer a 

 rhumb course S. 76|^° W., 897 miles, to a position South of Nantucket 

 lightvessel ; thence S. 87 1° W., 193 miles, to Sandy Hook lightvessel. 

 The total distance from the Fastnet will be 2,758 miles, and from Bishop 

 Rock '>.,883 miles. 



Southern Route {February 1st to August 31st). — From the Fastnet to 

 long. 47° W., lat. 41° 30' N., tlie distance by Great Circle is 1,634 miles, 

 or from Bishop Rock to the same position, 1,749 miles. Thence steer a 

 course S. 87° W., 1,029 miles, to a position South of Nantucket light- 

 vessel, and then proceed as before. The total distance from the Fastnet 

 will be 2,856 miles, and from Bishop Rock 2,971 miles. 



Bound EASTWARD. — From February 1st to August 31st, inclusive, 

 steer a course from Five Fathoms Bank South lightvessel, or from Sandy 

 Hook lightvessel, so as to cross the meridian of 70° W. nothing northward 

 of lat. 40° 10' N. Thence steer by rhumb line to cross the meridian of 

 47° W. in lat. 40° 30' N. ; and hence proceed to the Fastnet or Bishop 

 Rock, passing nothing North of the respective Great Circle routes. 



From September 1st to January 31st, inclusive, steor the same course (as 

 above) from Five Fathoms Bank South lightvessel, or from Sandy Hook 

 lightvessel, so as to cross the meridian of 70° W. nothing northward of 

 lat. 40° 10' N., and thence to cross the meridian of 50° W. in lat. 43° N. 

 From the latter position pass nothing northward of the Great Circle route 

 to the Fastnet or Bishop Rock, always keeping South of the parallel of 

 that rock when bound to the English Channel. 



Northern Route {September 1st to January 31st). — From Sandy Hook 

 lightvessel to long. 70° 0' W., lat. 40° 10' N., steer S. 83|° E., 177 miles ; 

 thence N. 79° E., 917 miles, to cross 50° W. in 43° N. ; and thence nothing 

 North of the Great Circle to the Fastnet or Bishop Rock. The total 

 distance to the Fastnet will be 2,792 miles, and to Bishop Rock 2,914 

 miles. 



