Vibration when climbing waves

[Grec]

I have a 2001 310 DA with twin 350 V-Drives. I'm getting a slight vibration at cruising speed when under the strain of climbing the back of a wave. The vibration subsides on the down side of each wave. It's fairly mild, and other people don't notice it until I point it out. But I can hear it and feel a slight vibration through the deck when it happens.

I changed the trim tabs last winter and wondered if that could cause this type of issue, but I'm guessing that it has more to do with props. Does that sound right, or would a prop problem cause continuous vibration?

 

[dtfeld]

Cutless bearings come to mind. How old are your cutless bearings or when were they last changed?

 

[Grec]

Thanks dtfeld. I'm not sure because I only bought the boat last year and only got about a month's use out of it. This is my first inboard. I've had I/O's up until this boat. Is that something that can be diagnosed with a short haul?

 

[mrsrobinson]