Has anyone taken the NH commercial boating license test?
The entire study guide is 5 pages of things that mostly apply to all boats (buoys, flame arresters, lighting etc).
https://www.nh.gov/safety/divisions/...Supplement.pdf
There are a few unique requirements (type 1 PFDs, engine fire suppression, manual fuel shutoff and of course a bell for boats over 26 feet)
Is it mostly a more in depth standard recreational boater test?
No on water test unless you want a license valid for over 34 feet.