It is difficult to know where to start when it comes to decorating, and this is the same for boats as well. A lot of ideas can begin to merge and can result in a mismatched interior. To put you on the right track, research a variety of interior themes. Once you have a theme that you like, you can begin searching for furniture, flooring, lights, paint, art etc. to bring those ideas to life. Some themes you may consider are:Industrial: The hipster way of decorating.