Shelter Island Nomad 30

[rbgarr]

http://i41.tinypic.com/ibfmnd.jpg

What are the ports in the lower section of the transom for? AFAIK the outboard ones are the exhaust ports. Maybe the lower ones are also? Four mufflers??

Water ballast ports?

Larry P?

[Noah]

Sometimes powerboats will have either below the water or above exhaust ports that you can switch between. Perhaps that is it?