Skimping on materials?

I had a productive weekend varnishing etc - I reckon I have a few more days worth and that's the topsides all done. Then I can start on putting some fresh coats on the masts...

I pulled the trim off around the hatch up forward in preparation for finishing the painting in the forward cabin. This has exposed the raw edge of the teak decking. Only 1 3/4" thick up here, looks like the builders were skimping.  :-)

The joint mid-image is the plank seam. You can see some oakum caulking sticking out.