Senkan wrote:
Hinoki Cypress. 127mm wide planks. Not sure of the length.
Thank you very much for this info.

I also found out from another source the following info, quote;
Much of the weather deck was planked over with Japanese cypress with caulking between the planks.
This would have given a fairly smooth, even surface, such as you find on traditional sailing vessels.
Other areas such as forward where the anchor chains and ground tackle ran across the decks from the windless', and the aft area around the aircraft recovery crane, the steel deck plating was given an anti slip cross hatch pattern.
I seem to recall that there were work areas around the aircraft catapults and the aircraft trackways that were asphalt laid upon the steel decking.
Finally there were some areas along each side near the safety rails that had linoleum fastened with bronze clips, if memory serves me correctly.
These were light colored so as to give bridge officers a sense of the outline of the ship at night when navigating.
And then after that a little more info was given, quote;
Japanese cypress is a lot like teak in its weathering properties.
Normally the wood does not need to be oiled or sealed--in fact it does better without oiling or sealing.
In a marine environment which will tend to keep the wood wet, preservation is not a problem, and in dry spells, hosing it down with salt water daily will do the trick quite well.
It is sometimes part of the routine to holystone the decks--a sort of make-work for the crew who use slabs of sandstone to polish the wood.
This link gives a wiki article about Japanese Hinoki Cypress;
http://en.wikipedia.org/wiki/Chamaecyparis_obtusaIt is a quite beautiful evergreen which is also cultivated as a miniature banzai tree.