Join Date: Mar 2012
Location: Vancouver, BC
Thanked 5 Times in 4 Posts
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Not sure if what happened has been posted accurately:
My understanding is it was a combination of issues, the main one being an issue with the remote control system.
Unfortunately, while one of the benefits of the remote control is allowing the operator to operate the machine without standing on it, one of the downsides is that the control is no longer directly manual, and computer errors can have serious outcomes.
In this case, the lift was rolled out and the boat lowered.
While the operator was doing his final checks, the machine independently rotated one of its wheels to the wrong direction, on the opposite side of the lift from the operator after he'd checked that side.
When the operator moved the travel lift forward to push the boat out, the wheel that was facing perpendicular to the desired direction rode up over the edge and down went the lift.
It's not so much a pendulum type move(swinging the boat around) as using the forward sling to give the boat a gentle nudge out of the bay. It's SOP here as well, the boat is totally floating, the forward sling is just touching the hull is used to move it in the right direction. I had no idea the lifts here did it either until the operator explained it to me.
It seems like it didn't really matter what they did, if they'd reversed the machine towards land, or rolled forward to push the boat out, one wheel being 90 degrees out would have sent it over the edge either way.