See this post on Ebay, looks to be the same model!

Cheers, Pete

https://www.ebay.co.uk/itm/Superb-USSR-River-Patrol-Boat-Shmel-Class-R-C-Model-Boat-AKA-Bumblebee/203276202765?hash=item2f543

No you have been more than helpful Thank you.
Regards Des.
PS, It is a scratch built model ( Very well built with a plank on frame hull )

Well I looked in both of my Jane's, 71-72 and 97-98. It could of course be more recent than the latter. In the latter, 97-98, I found two Russian river patrol type that resemble your model, but are certainly not spot on. Both classes mounted a forward tank turret, one a 3" and the other a 155mm. Your model certainly appears to sport a tank turret. Both also sported the rather unique railing running along the chine, as does your model.The super structures are vaguely similar, but again, not spot on.I found no river patrol craft listed in the 71-72 edition of Jane's. The dimensions were 140-180 ft long with beams of 20-30 ft respectively. The two I found were the YAZ(Slepen) Type 1208 class and the Vosh(Moskit) Type 1248 Class. My suspicion, and it is only that, is that yours is a scratch built(well built), although it could be an Eastern kit. It has some hall marks that point to a more modern build, rather than earlier.Not having anymore info makes it a good exercise in guesswork. Sorry I could not be more helpful.

After the info you gave me in your message I have found out it is probably a USSR Shmel class armoured river patrol boat, Thanks for your well appreciated info, your thoughts on what I have found out would be much appreciated.
Regards Des.

Actually I have to respectfully disagree. While it bears a remote resemblance, there are too many differences to go into. The forward turret looks suspiciously Russian, so I am going to take a wild guess that it is perhaps, an East German or Polish gunboat. I will get out my old Jane's Fighting Ships and see if it will shed some light on it.

Looks like the USSCrockett by Dumas.