Welcome Aboard StenGem!!
These boats didn't come with linens (sheets, blankets, comforter, etc). They came with mattresses only. If you have bedding to actually MAKE the bed, then someone had those made. Any marine canvas and vinyl shop or marine design company can do that for you.
I've done business with these folks several times and have seen their work on friends boats as well. I would call them to see what they can do for you.