TANNER — DREDGING OPERATIONS OF SPEEDWELL IN 1379. 609 



steamer Nipsic to Norfolk, Va., and left the navy-yard in company with 

 that ship at 7.45 a. m. on the IGth, returning on the 19th, and was put 

 out of commission at meridian, October 24, by order of the honorable 

 Secretary of the Navy. 



RECAPITULATION. 



Number of days in commission 11G 



Number of clays at the Washington Navy-Yard, preparing for sea and going out 



of commission 16 



Number of days making the trip from Washington to Provincetown and return . . 8 



Number of days making trips between Provincetown and Gloucester 2 



Number of days making trips between Provincetown and Boston, including 



time occupied coaling 8 



Number of days employed in other than commission work 11 



Number of days detained in port on account of weather 26 



Number of days detained in port by naturalists preserving specimens 3 



Number of days detained in port repairing machinery, dredging apparatus, &c. 4 



Number of days employed dredging and trawling 24 



Number of days employed taking serial temperatures 1 



Number of hauls with the trawl 76 



Number of hauls with the otter trawl 2 



Number of hauls with the Agassiz trawl 



Number of hauls with the dredge 58 



Number of hauls with the rake-dredge 9 



Total number of hauls with trawls and dredges 148 



Average number of hauls per day 6 



Average depth of water fathoms.. 36. f> 



Number of surface temperatures taken 169 



Number of intermediate temperatures taken 130 



Number of bottom temperatures taken 139 



Total number of water temperatures taken 438 



Number of air temperatures taken 160 



Number of soundings taken 180 



Distance run while trawling and dredging miles . . 1, 081 



Distance run making passages miles.. 2, 041 



Total distance run miles.. 3,122 



Average daily distance run while dredging and trawling ...miles.. 45 



S. Miss. 59 39 



