RE: Differences between surface drive and submerged drive
Hi Meowy84.
A submerged drive has the prop completly under the water even when the boat is on the plane.
A surface drive has the prop completly under the water when standing still, but only has approx 2/3rds to 3/4 of the prop in the water when the boat is on the plane.
On monos "V" type hulls the prop shaft comes out of the bottom of the hull for "Submerged drive", or straight out of the transom for "Surface drive".
Hope this helps you.
Regards Brettos.