Re: What wood is this cabin sole made off??
I had similar uh-ohs on a quality built taiwanese boat. The strakes were 1/4 thk teak and 1/4 x 1/4 white meranti (?). I found my meranti at a 'quality' hardwoods dealer and carefully 'routed out' all the old and simply very carefully 'inlaid' the new.
For a wet section of sole that began to rot away from underneath in the supporting ply, I cut out a square section of the sole with a very fine 'cabinet saw blade' (on a fein tool), removed the 1/4 thick teak straking and (probably) white meranti without loosening the strake to strake glue lines by careful chiseling/grinding/sanding away the adhering underdecking and then simply re-glued to the rebuilt 'underdeck'. The only way one can determine that this was a repair was to closely look for those very thin 'cut lines' that were filled with 'saw dust filled resin'.
hope this helps.