Up to $1,000 free onboard spending money per cabin leads Norwegian Cruise Line’s wave period sales promotion.

The deal covers selected cruises booked by January 7.

Consumers booking seven to 13-night sailings in an ocean view, balcony or mini suite will receive $250, rising to $500 on cruises of 14 nights or more.

Those booking suites or The Haven Suite will be given $500 for seven to 13-night sailings or $1,000 on cruises of 14 nights or more.

The offer is available on “hundreds” of cruises from April 2015 to April 2016 on board 13 of Norwegian’s ships covering the Caribbean, Bermuda, Hawaii, the Panama Canal, Alaska, Northern Europe and the Mediterranean.

UK managing director Graham Sadler said: “We are delighted to offer our guests such an incredible promotion and travel partners a brilliant selling tool to end the year with.

“Agents can encourage guests to take advantage of this campaign to truly enhance their Freestyle Cruising experience, whether that be dining in one of our speciality restaurants, indulging a spa treatment or booking that special shore excursion – it’s in their hands.”