The foward bunk room, in the above pic, has a companionway coming down into it on stbd side. It has a sliding hatch topside which closes by sliding to stbd. To my knowledge It is not water or airtight. I believe there are 3 "watertight" doors total, one in each of the 3 bulkheads separating foward bunk room, cargo hold, machine/engine room, and aft bunk room. Unless I am mistaken, there are no watertight doors at the bottom of the 2 companionways. Consequently, a knockdown to stbd will risk flooding through the front and rear companionways and the cargo hatch. The sloped wall of cedar on the stbd side in the forward bulkhead separating the forward bunk room from the cargo hold is the back of that companionway. It is occupying the mirror image of the gas bottles. The pic below shows part of that sloped wall visible through the yellow coil of wire or whatever it is, maybe HF air hose. I guess you could attempt to escape up the foward bunk companionway if the inrush of water doesn't propel you through the door into the cargo room. From there your choices are try to open the cargo hatch, which will likely bind and have its own inrush going on, and which is likely impossible from below, go for the rear companionway, which will likely have more of an inrush of water, or head towards the stern and get through 2 more doors go for the rear bunk room hatch, all the while having your world on its side and all sorts of objects dislodging and moving in the incoming swirls of seawater. Maybe not so bad if the knockdown is to port. Anyhow, safety considerations are for pussies.
Can you offer or direct me to a picture of the heavy ass door on the forward companionway? I somehow missed the build and installation of that door. I thought there were 3 "watertight" doors, one in each bulkhead. Am I mistaken in thinking there is also no such door on the aft companionway? The forward companionway is visible at 2:47 in the following video of outfitting the forward bunk area:
ahhh, Doug always pointing at stuff.