Where to look for the last warship built without metal fastenings

What was the last frontline warship built entirely of wood, without even iron nails?

Probably a Japanese or Korean vessel built with hardwood pegs, although no definitive last ship is identified.

European shipbuilders adopted metal fastenings early enough that the last entirely wooden frontline vessel is unlikely to be European. Japanese and Korean construction traditions provide likelier candidates because builders could join pine structures with oak pegs. Possible candidates include late panokseon-type warships or Japanese vessels still present around Commodore Perry's arrival. Neither a definitive last vessel nor its retirement date is established.