cruise_id  cruise_start_date  cruise_end_date  date_start  
NH1106     20110604           20110622         20110609    
NH1106     20110604           20110622         20110610    
NH1106     20110604           20110622         20110611    
NH1106     20110604           20110622         20110612    
NH1106     20110604           20110622         20110613    
NH1106     20110604           20110622         20110614    
NH1106     20110604           20110622         20110615    
NH1106     20110604           20110622         20110616    
NH1106     20110604           20110622         20110617    
NH1106     20110604           20110622         20110618    
NH1106     20110604           20110622         20110619    
NH1106     20110604           20110622         20110620    
NH1106     20110604           20110622         20110621    
NH1106     20110604           20110622         20110622