One of the interesting extras which came with a rather fantastic bargain lot of Lamming Medieval figures from ebay was this small metal ship.
The hull length is around 4cm.
Bill Lamming did do Medieval cogs for use with his Medieval Campaign Rules but my recollection from seeing them on his stand at shows (I never had any) was that thy were really tiny. There is what looks to be a manufacturer's mark on the bottom of the hull, but I haven't been able to make it out.
So if anyine recognises the model or can thriow any light on it, I'd be pleased to here from you.
The model is a bit nicer than it appears from the photos, but it is very rough.
Pictures here -
Two pictures of the ship
The marks on the hull