Do you have any more information? Are you buying a specific kit or something like that?
There's is usually a hell of a lot of work that goes in to a ship.
If it's a historic sailing ship then you probably aren't going to want to paint the wood grain at most scales, it would be too small to see. A 300mm wide plank at 1/100 scale is only 3mm wide on your model, so you aren't going to be attempting to paint or engrave the wood grain on it. When we paint the wood grain on a
40k or
WHFB model, it's an artistic exaggeration, not really realistic so not what you want to do when painting a historic model.
I really don't have much experience in the area of historic sailing ships, but my first guess would be for small scales just paint it beige and then give it a coat of medium brown ink. For larger scales, where individual planks become large enough for you to pick them out easily, base it with a beige and then go over with an ink, but ink each plank individually with varying viscosity with the ink. So don't paint adjacent planks, but dip your brush in water, then in to the ink, then paint one plank on one side of the deck, one plank on the other side, one plank in the middle and work your way around like that. Painting like that will produce some natural variation in the tones from one plank to the next.
I'd specifically try and use inks rather than washes or shades you get from the likes of
GW or Army Painter. Artists acrylics inks and thin them down to the correct opacity...
https://www.youtube.com/watch?v=7yzjd9l6aEI But you might be able to get a similar effect with washes.