It's a ready built one marketed under the auspices of the RNLI itself. I bought it from a shop called Nauticalia. There are numerous stories about it on the www - overheting, sizing up motors etc. I was offered a refund by the shop but they had no replacements and the little man was/is really attached to it - even though now all he can do is float it in the bath. There are also stories of it being modified to full RC specs, but I don't want to go the pro route, just something he can use and have fun with as originally intended but with better motors (water-proof).
I was an engineer and I've modelled locomotives, mended clocks and built 1:1 racing motorcycles - not boats in any scale though. Trouble now is I can't hold anything steady, problems even to write. Despite being on the coast I know of only one model boat club - it's a good one but it's racing 'yachts' only and very pro too.

Is it one of the type that's showing on eBay for £90. Or a kit. if it's the eBay type you could end up with a very expensive "toy" for such a young lad by the time you put modelers components in.
Unfortunately built lifeboat models don't leave thier owners very often, unlike say cabin. Cruisers and torpedoed boats.
If you are a modeller apologies for " teaching your granny etc).
Built my son a Robbe Dolly when he was around 10. That was over 20yrs ago. U now have around 24 serious models and either they're getting heavier or I'm getting older.
Is there any clubs in your area you can visit and have a chat. I'm inNortheast.

Thanks Ed!

Hi BruBaker

Don't give up be patient, I'm sure someone is bound to read your plea for help.
And you will be offered help with your repair of your grandson's Model.
I would offer you my hand but I'm here in the U.S.,
Just be patient I'm sure you'll get a reply!

Ed