Federal investigators on Thursday released a preliminary report on the Conception boat that killed nearly three-dozen people earlier this month off the coast of California, and said the entire crew was asleep when the blaze began. National Transportation Safety Board officials have said the full investigation could take more than a year, and preliminary findings highlight remaining questions as much as they provide answers as to how the tragedy happened. “A crew member sleeping in the wheelhouse berths was awakened by a noise and got up to investigate,” the report said. “As crew members awoke, the captain radioed a distress...