Please help answer a question I have had for years about tugs

Maritime Topics Tugs & Towing
1

where did the term “model bow” come from? Is it a bastardization for “moulded bow”?

2

Molded Bow, I believe.

3

Well there are two types: model (pointy) and scow (sloped). Looked it up in one of my many naval books! But thats all i could find!