stringer question

[tito]

Its been a long time since i havent been on the forum and my proyect is been on a forced halt for lack of $$$$time$$$$ but Im about to resume the proyect. Today I was checking the stringer system and noticed that they are wood free or wood less or the wood took a vacation and hasnt come back so I was wondering if this is normal on these boats. It has a stringer system with bulkheads all in one piece pre made in the factory but like I stated before has no wood that i can find.
Does anyone have any input on this?