Operator #1 stated to the effect: "I was just about to come up on plain and hit something under the water." 

Investigation revealed: Vessel #1 was traveling in a northerly direction at a no wake speed. Operator #1 applied more throttle to achieve plane, at which time vessel #1 struck 
an unknown submerged object.  The impact damaged the outboard motor skeg and the propeller.
Roxbury