Ask each operato.
I think that is doubtful but there is a chance....Ring round all the cruise lines, most of them have free or cheap numbers, and get a definitive answer "straight from the sea-horses mouth" so to speak. If you do find out in the affirmative let us all know as it is very interesting. Yours Hopefully, Neil Dow.
Yes, there is a website called dialysisatsea.com that will organised it for cruiseships.
Visit www.dialysisholidays.co.uk they are a company specialising in haemodialysis cruises based in the UK. My friend booked through them and said they are really helpful and professional.