I posted this comment to this NYTimes article California Boat Fire Kills at Least 20; Haunting Pleas as Flames Erupt
I spent two nights on the Conception with a Sierra Club trip to the channel islands in October 2017. It has a main stairway from the passenger bunks below deck to the kitchen on the main deck and also a secondary escape hatch which they made sure we knew about in the Emergency Procedure Drill they held. The hatch opened to the main deck cabin, which we all saw was engulfed in flames. I am also a diver and have slept on other boats and you are right, they are similar. Typically, the crew sleeps close to the wheel house, far from the passengers. I am stunned by this tragedy.
I have not yet written about the Sierra Club trip because it was shortly after the October 2017 fires in Santa Rosa. I had planned the Channel Islands trip months earlier, and paid for it in advance, as required, so I had to go. Frankly, I was grateful to get out of Santa Rosa even though I was coming down with a massive cold contracted in the shelters. But more on that later.