Answer:
I help boats park
Fatherless and Motherless, born without sin. Roared when it entered the world, And never spoke again.
I am the thing that is used to make your weight. What am I?
I save lives on the ground and in the air
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?