Gap between deck and transom?

[Abe's Rocket]

I pulled a piece of a telephone pole gray teak trim out of my boat (86 23ft CC) last week. The piece went the width of the boat under the motor well gate. I was somewhat surprised to see a gap between the floor and the inside of the transom.

Is this standard? Or do I have a special boat...

I'll get a pic this weekend.

Thanks!