I was going to suggest it was gouged by parts
of an anchor
on a bow roller, but the suggestion about it being from an outboard motor
prop is the other end of things.
While the cosmetics are an issue, and the boat looked beautiful, the real issue is making sure the damaged spots are sealed so no moisture can enter the glass where the gelcoat
has been compromised.
I would find an Auto Parts
store with a good selection of touch up color pens, get it as close as possible and just touch it up, to get it sealed.
That is my solution, but I am not really picky about stuff. My boat id much older, and much cheaper, and has taken a LOT of bumps and bangs from a lot of single
handing incidents, and unscheduled maneuvers.