Here’s a flat-coat:
See how maneuverable that flat-coat is in the water? That’s why it’s a gun dog, and the Newfoundland isn’t.
And watch this little golden (“Shuttle” from the header)
I’m pretty sure she could swim circles around a giant dog with tons of bone and hair.
I’m not going to show a Labrador swimming, because Labs are the fastest water dogs you can find. They can outswim virtually any dog, simply because they have a coat like a seal or an otter.