well, I kept the criteria as following: if it operates independently (so not as sloop or lifeboat from a ship) I put it on an template. if not. it's on sheets. I know it is maybe not the best thing to do..... I suppose the best thing for them would be a template with a 50m scale bar or something. but well, I'm no admin, and these small craft are only a small part of shipbucket, so I just kept it like this.
Ahhhh, I understand now, these boats are not carried by larger vessels. Through I would classify any vessel as operating independently as one that you could crew for a period of time away from shore with some protection from the elements.
Potatoes, apples, whatever floats your boat.