52 ' ' MARION ' ' EXPEDITION TO DAVIS STRAIT AND BAFFIN BAY 



banks of batteries charged. The Delco was run, therefore, only 

 intermittently. The most frequent mechanical troubles ^Yere with the 

 oceanographic apparatus and the most serious of these difficulties 

 have already been described. 



The Marion cruised a total distance of 8,100 sea miles, or farther 

 than from New York to Sydney, Australia. The motors expended 

 14,000 gallons of oil, the rate of consumption being 1.5 gallons per 

 mile on one motor at an average speed of 6 knots and 2.3 gallons per 

 mile with two motors at 8.7 knots. The survey covered that 450,000 

 square sea -mile area of ocean lying between Greenland and North 

 America which is situated between St. John's and the seventieth par- 

 allel of north latitude. A total of 191 stations were taken, at which 

 about 2,000 observations of temperature and salinity were made. AH 

 of the tests of salinity were made immediately on board by means 

 of electric salinometers. The fathometer registered 1,T00 depths for 

 chart record and several times that number in actual practice. 



The data the Marion had obtained during the course of her special 

 duties were now^ ready for scientific analysis. Although her northern 

 adventures were all over, the tale of them recorded in part in the 

 foregoing pages will live long in the memories of her complement, 

 whatever may be their future duties and wherever they may go. 



