Perhaps the news coverage of this week’s two cruise-ship-related tragedies made you wonder how soon those big white boats are going to start showing up again every weekend off Duwamish Head, aiming for Alaska. Looks like we’re a month away from the first one, according to the Port of Seattle cruise schedule (PDF). Provided Councilguy Dow’s word is good and the Water Taxi will be back this summer, should be more good times with the “Sightseer” crossing paths with the mega-ships on sunny summer afternoons …