Bar chart/Line graph: Average Gross Per Diem and by Months Prior to Sailing, Four Competing Ships Departing the Same Port the Same Day on Similar Itineraries, (Category X Cabin).
X-axis is Months to Sail running from 1 to 13 in increments of 1 and then over 13. Left y-axis is Percent of Passengers Booked running from 0% to 100% in increments of 10. Right y-axis is Average Gross Per Diem running from $80 to $180 in increments of 10. Key: Bar 1 = Ship A bookings, Bar 2 = Ship B bookings, Bar 3 = Ship C bookings, Bar 4 = Ship D bookings, Line 1 = Ship A per diem, Line 2 = Ship B per diem, Line 3 = Ship C per diem, Line 4 = Ship D per diem. The bar charts shows a generally steady decrease in percent of passengers booked from month 1 to 13 and beyond. The line graph shows varied average gross per diem for each ship over the same period of time.