The shares are being sold by major holders Apollo Global Management and Star NCLC Holdings (Genting Hong Kong).
The offering is expected to close on or about Dec. 17. Goldman, Sachs is serving as the sole underwriter.
Following the sale, the Apollo holders' stake in Norwegian will go to 15.8%, down from 18.1%, while Genting HK's stake will go to $11.1%, from 13.4%.
Norwegian will not receive any proceeds from the sale but has filed to buy back about $20m worth of shares in a previously announced stock repurchase program.