Fuel usage statistics are an important factor for measuring performance. The table below outlines this for the fleet:

##     Vessel              Usage       Main.Engine_Exhaust.Temps_Average.Exh
##  Length:657         Min.   :    0   Min.   :219.4                        
##  Class :character   1st Qu.: 4530   1st Qu.:308.7                        
##  Mode  :character   Median : 5866   Median :318.2                        
##                     Mean   : 6805   Mean   :336.7                        
##                     3rd Qu.: 8320   3rd Qu.:347.8                        
##                     Max.   :32003   Max.   :492.0                        
##                                     NA's   :186