A ship I served on early in my Navy career had teak decking on all the weather decks. Teak planks were about 5" wide and 3½" thick. They wore like iron, but on occasion needed some recaulking. There was about a 3/8" wide joint between planks, and oakem was driven in with the irons, and then it was top sealed with some hot tar. In the 60's, they were still having some nubs holystone the deck once a week, but finally gave that up....something about cruel and unusual punishment!
On today's market, there must have been a million dollars worth of teak! The ship was 530' long, and the main deck, 01 and 02 decks were teaked.
By the way, that ship, built in 1942 and decomissioned in 1982, is still in existence. Actually, it has so much asbestos and PCB that the Navy has been thwarted at every attempt to have it cut up for scrap. It is to the point that it may now be turned in to a museum!