Interior photography does have many sub categories or niches. I have the interior hotel photography work, the real estate photography and now the yacht photography. It is all about photographing spaces.
I have to say that modern yacht are so much different than years ago. The decoration is so up to date and actual. The interior yacht illumination has also come to a new level. Here is an image I did in a recent yacht in Casa de Campo, Dominican Republic. This is the interior of an Azimut 2014 yacht with opened sun roof.
Yachts need good photography because of its exclusive market. Good images are used to rent, buy or sell boats. At any level.