Bringing Teak cabbin floor back to life???

Thank you for all that solid advice.

Yes, approx 3-4 'millimeters', I essentially just stripped the old varnish off with 80 grit, and am now using a finer grade for finishing. I do have several sanders, including a corner sander for those tricky areas.
I will follow the advice that pretty much everyone has given to thin down the first few coats, sounds reasonable. As there are 6 separate areas, forward walk in walk in storage and workbenches, midships Saloon/Galley, port side double berth, starboard side companionway/berth, and main berth/stern, I am tackling them separately now, as I am also going to complete the fixtures/fittings/trim, also all wood. I do think doing such a large amount of restorative work is best tackled that way as so much sanding may very quickly become tedious.

I also need to fill in a multitude of screw holes, and then re-screw some of the planks, for some reason a previous owner used several different sized screws, so some are very ill fitting. I do like uniformity. So I'm off to purchase some wood filler this morning. I will try and post a few pics this evening

Cheers

 

I wouldn't thin the first coats, but use it right from the can. Thinning is a good idea on raw wood, but this is previously coated, which means it's pores and cellular structure is still sealed. A thinned first coat will not have any advantage, so just move onto bulking coats, straight from the can.