Preheat your oven to between 350 degrees. Place your turkey in a large roasting pan. (Roasting pans take up a lot of room on a sailboat so for this Thanksgiving dinner we put the turkey in a disposable foil pan and placed it on a cooking sheet for added support.)
Light your burner and heat up your largest sauce pan. Sauté the sausage until just brown. Add 2 tablespoons of butter and sauté celery and onions for 5 minutes. Add seasonings and oysters, with their juice. Cook until oysters start to firm up, about 5 minutes. Add chicken broth and stuffing mix. Toss stuffing mix in the broth until it is moistened. Turn off you burner and continue to toss for another minute or so.
Carefully stuff your turkey, one large spoonful at a time. Extra stuffing can either be placed around the turkey (no gravy or basting though. The stuffing will soak up the drippings) or in a separate dish to bake later. Place in your preheated oven. Keep the heat between 325-375 degrees. Roast for approximately 3 hours, basting occasionally, until golden.