Royal Caribbean International announced a promotion in which the second passenger on sailings in 2015 and beyond pays 50% of the fare of the first passenger in the cabin

The "Buy One Get One 50% Off" deal is being offered in May on sailings between Jan. 1, 2015, and April 30, 2016.

Although somewhat similar to Norwegian Cruise Line’s “Buy Once, Sail Twice” promotion, the sale period is longer and the number of sailings is broader.

Royal Caribbean said the deal is available on new individual and named group bookings in all categories on every ship except Quantum and Anthem of the Seas.

Taxes, fees and port expenses are not discounted.

Follow Tom Stieghorst on Twitter @tstravelweekly.

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