Plank thickness for 30cm model ship

[Vrushant]

Please can anyone tell me what thickness plank should I use in my 30cm HMS victory model ship.

[wefalck]

Planking thickness on the real ship will vary around the hull. Some of this is visible from the outside, namely the wales. You would need to check the thickness of the planking on the real ship from appropriate resources and then adapt it to the scale of your model.