(AP) — Federal investigators looking into the ill-fated voyage of a 790-foot freighter believed to have sunk in the Atlantic during Hurricane Joaquin will focus on the communications between the captain and the vessel's owner. The National Transportation Safety Board sent a team to Jacksonville on Tuesday to begin the agency's inquiry, which will help determine why the captain, crew and owners of El Faro decided to risk sailing in stormy waters. Another question is whether the five workers whose job was to prepare the engine room for a retrofitting had any role in the boat's loss of power, which set the vessel adrift in the stormy seas. [...] the question — along with the captain's decision to plot a course near the storm — will help investigators figure out why the boat apparently sank near the Bahamas, possibly claiming the lives of all 33 aboard. The American Bureau of Shipping, a nonprofit organization that sets safety and other standards for ships, did full hull and machinery inspections in February with no red flags, the company said. F.