Many thanks for the link, but I am still confused? For example in the book Allied Coastal Forces Of WW11 there are illustrations of British Fairmile Bs that are numbered ML *** and on the next page Fairmile Bs numbered Q ***. Were they launched as ML then changed to Q or were they launched as Q designation?
I always thought all British Fairmile Bs were ML and all Canadian Fairmiles were Q.
Best Regards John