Will ships have the triangular sails in the front and the back?

I just want sloops, brigs and galleys to have the parallel, triangular/trapezoidal sails they should have, and now that the black pearl and the flying dutchman have them, I don't understand why don't they add them to the basic ship types.

I don't suppose there's any way to make ships have them, right? Mods/textures?