The scale of these figures of British marines at the battle of Trafalgar is 1:72.
The project recently got a boost from a request on this site for some British marines for a 1:100 scale HMS Victory. Chris, if you're reading this, thanks for getting me off my behind here !
My own model of the Victory is in 1:225 scale but now I, too, urgently need British marines. 1:225 scale is a bit small to print out 3d sailors for but still doable. I suspect that the gun and knife will need to be thicker than the realistic ones here. Will post my results at that scale here and adjust the models accordingly.