Norwegian Cruise Line Holdings earnings rose for the second quarter, powered by stronger-than-expected revenue and pricing. 

"Second quarter was great, better than we anticipated. It's really a number of things," interim CFO Mark Kempa said in a conference call.

One was the high performance of the company's newest ship, the Norwegian Bliss, compared to previous ships. The Bliss started sailing in the middle of the quarter in Alaska.

A second factor was higher onboard spending in the rest of the fleet, Kempa said.

Beyond that, with the remaining inventory, there was very strong pricing on close-in bookings.

"It was really coming from all fronts, and not one particular area," Kempa said.

For the quarter, Norwegian posted net income of $226.7 million, up from $198.5 million a year earlier. Revenue increased 13.2%, to $1.5 billion.

CEO Frank Del Rio said that as of June 30, the value of advanced ticket sales was up 26% over the same time a year ago, while stateroom capacity was up 9%.

Shortly before noon, NCLH shares were ahead 3.6% from yesterday's closing, with the broader market up 0.5%.

NCLH raised its net income guidance for all of 2018 to between $1.05 billion and $1.07 billion, including $22 million in expected expenses and lost revenue from its shift of the Norwegian Joy from China to Alaska, along with other deployment moves.

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