Cheers, Mohawk. Actually, the translucency value is already at '1' for all sail objects in the posted image. I think I might have to go overboard with it, I think the ship is overall too bold aswell, I will probably move it way back and scale it up, so it's the same overall size in the image but looking more like just a hint of it approaching.
The atmospheric haze and blue-sky colour will deaden it a little if I get the distance right...
