Cabin sole finish
I did my solid teak sole with Minwax polyurathane(sp?) semi-gloss varnish (7 coats). It looks very nice. I used polyurathane because it is supposed to be more wear resistant than spar varnish.
While polyurathane is not considered suitable for exterior brightwork, it is more durable to abrasion. Below decks it isn''t exposed to the UV radiation which seems to do it in on exterior brightwork.
My one concern was how slippery it would be if wet.....spilled some water on it and tried it out...was suprised that it wasn''t slippery at all. Don''t know why, but decided all the concern about varnished soles being slippery was an old wives tale... at least as far as polyurathane is concerned.
If you decide to use semi-gloss, use clear for the first few coats as the semi-gloss has stuff in it to make it less glossy and it will tend detract from the teak grain when a number of coats are applied.
P.S. Have lots of air going through the cabin or wear a Carbon filter mask.....the fumes will make you higher than a kite!!