Saturday, December 31, 2011
From the moment the decision was made to build Silent Maid's hull upside down we started thinking about how we were going to flip her upright when the time came. Several ideas were considered including bringing in a crane at $1500 a day and constructing a large plywood wheels to turn her with. Both of these seemed too labor intensive. The crane involved moving the boat out of the shop and back in; the wheel would have to be built. Often we start out with complicated ideas then move towards simplifying them. We decided to use a pair of gantry cranes we already had to do the job.
With a clear picture of the physics involved we set about building the minimalist net we would use to maintain control of the boat. We borrowed straps from Olympia and bought a trolley for the crane that still needed one. It took a morning to get everything set and just a couple hours to do the actual turn. We moved very deliberately through the process. There is a little adrenalin flowing during jobs like this and pays to use it to slow down and focus. Any minor glitches need to be carefully considered, we only get to do this once. The only change from the model was to use come alongs to shift the trolleys across the crane as the vertical point was reached and to use a small electric winch
to slide the port side across the floor. Packing blankets were between the hull and floor to save our precious varnish job.