What happened For the second day in a row, shares of cruise line operator Norwegian Cruise Line Holdings (NYSE: NCLH) are heading north, while the rest of the market moves south. Shares were up more than 5% earlier in the day and still up 3.6% as of 12:25 p.m. EDT -- and probably for the same reason Norwegian shares defied the market downturn Thursday. Good news in the cruise sector. Image source: Getty Images. So what As my fellow Fool Joe Tenebruso noted yesterday, Norwegian rival Carnival Corporation (NYSE: CCL) plans to resume cruising at its Costa Cruises subsidiary on Sunday, sailing out of Italian ports. Only a few ships will resume cruising initially, "in a gradual, phased-in manner," and only at a single subsidiary of a single cruise line -- which isn't even named "Norwegian." But still, it's a start. Now what In a market starved for good news, investors in the cruise line industry seem happy to take Carnival's announcement and extrapolate it to assume better news will be coming for the company and for its competitors, such as Norwegian, in the weeks and months to come. (And indeed, Carnival subsidiary AIDA Cruises is also expected to resume cruising in early November.) Fewer ships operating at "adjusted" (i.e., reduced) capacity won't return cruise lines to profitability anytime soon, however. For these stocks to keep going up, investors are going to have to think exceptionally "long term" and be prepared to wait -- potentially years -- to see profits turn positive again. 10 stocks we like better than Norwegian Cruise Line HoldingsWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Norwegian Cruise Line Holdings wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of August 1, 2020 Rich Smith has no position in any of the stocks mentioned. The Motley Fool recommends Carnival. The Motley Fool has a disclosure policy.Source