Played this with a 6-player crew today as a three-hour oneshot, and it went great! I started with a 10 minute or so quick prologue of the crew's voyage so far and then we jumped into play with The Incident. I cut most of the recommended times for the various events in half (or more) to ensure we hit all the beats, and it had a really fun ramping up effect.
In the end, one PC died and the ship was torn to shreds, but they were able to otherwise survive the day (now if they are able to survive in the long run is a story for another time). Great module!
Clearly laid out with great player and warden aids. If you are reading this and are unsure of the various "endings" of this module or how it may play out at your table, don't worry - it'll all click into place during play.