Your vessel has just taken aboard 1200 barrels of fuel with an API gravity of 30.9 at 60°F. Referring to the table shown in the illustration, how many long tons of fuel have you taken aboard? See illustration GS-0149.
• Use the table to find pounds per U.S. gallon at 60°F for an API gravity of 30.9 • Convert barrels to U.S. gallons (standard petroleum barrel volume) • Convert pounds to long tons using the proper factor for a long ton
• After finding pounds per gallon, how do you use the number of gallons to get the total weight in pounds of the fuel? • Once you have total pounds, what single division will convert that value into long tons? • Are you sure you are using the correct gallons-per-barrel and pounds-per-long-ton values and not the short-ton values?
• From the table, read the value in pounds per U.S. gallon at 60°F for API 30.9 (not the gallons-per-pound column). • Confirm that you used 42 U.S. gallons per barrel when converting 1200 barrels to gallons. • Confirm that you divided by 2240 pounds per long ton (not 2000) to reach your final answer.
No comments yet
Be the first to share your thoughts!