has tabs welded to both rails. A teak board (grain vertical) bolts to the tabs, and extends a bit above the upper tab. Motor lives there quite happily while we're cruising. I've had the same board for over 25 years. When we're off the boat for an extended period, I have a similar vertical board attached to the joiner work between the V berths where the motor is more secure from 'roaming'. That one is just a hunk of 2x6.