The number might be three on each side on a small 10 m boat up to 20 on each side for a 30 m vessel with 1500 hp.
There could be 3 on each side on a small 10 metre boat.There could be up to 20 on each side for a 30 metre ship with 1500 hp.
There could be 3 on each side on a small 10 metre boat.There could be up to 20 on each side for a 30 metre ship with 1500 hp.
Simplification: The number might be three on each side on a small 10 m boat up to 20 on each side for a 30 m vessel with 1500 hp. Output: