Carnival Corporation & plc, the Anglo American cruise shipping giant, says it forecasts its full year 2015 non- GAAP diluted earnings per share guidance to be in the range of $2.35 to $2.50.

In its first quarter interim result release on 27 March, the company forecast full year 2015 non- GAAP diluted earnings per share to be in the range of $2.30 to $2.50, compared to 2014 non- GAAP diluted earnings of $1.93 per share.

During the last thirteen weeks, fleetwide booking volumes for the next three quarters were running well ahead of last year at slightly lower prices due to transactional currency impacts, the company said in its second quarter earnings release.

At this time, cumulative advance bookings for the next three quarters are well ahead of the prior year at slightly lower prices again due to transactional currency impacts.

President and CEO Arnold Donald noted: “Current strength in booking volumes clearly demonstrates strong consumer demand for our brands, leaving less inventory remaining for sale and building confidence in achieving significant revenue yield improvement this year.”

“We are stepping up our marketing investment for the remainder of the year to further solidify our base of business for 2016 and drive continued yield improvement as we progress on our path toward double digit return on invested capital.”

The company continues to expect full year 2015 net revenue yields on a constant currency basis to be up 3% to 4%, which excludes translational and transactional currency impacts, compared to the prior year (up 2% to 3% on a constant dollar basis compared to the prior year).

The company now expects full year 2015 net cruise costs excluding fuel per ALBD to be up approximately 3% compared to the prior year on a constant dollar basis, which is slightly higher than had been anticipated in the March guidance mainly due to increased investment in advertising.