What happens if a wizard attempts to create a complex object using True Polymorph?

Let’s say that a wizard tries to create a vessel using True Polymorph. Now, a vessel is made of a main wooden body and many other parts, more or less “removable” (e.g. sails, wheel, furniture, crates, ropes). Are they created along with the main body? Is it necessary to roll for some knowledge check to determine the result?