This one seems to go just fine, Tophe. :)
Since I became the member of this forum, I could see that You're a man with a lots of idea, but being a Serbian, I must point the following:
I know that this is what-if forum, but where, in Gods name, You found the names Queegovich and Ericrovich
?
There's even a question is it supposed to be CH or just C at the end (my surname is Petrovic, for example) but this is completely different subject and a matter to translation/transcription. Typical serbian surnames are Jovanovic, Nikolic, Mitrovic, Petrovic, Markovic, Mihailovic, Djordjevic,... (just go wikipedia and type serbian name)
And one more thing... Through history, many yugoslav/serbian aircrafts, if there was a float variant, were usually carrying the designation H (hydro), like Utva 66H, so I think that MMS-3H would be much more simple and quite suitable.
Please, don't get me wrong, but those guys Queegovich and Ericrovich just don't fit