April 24, 2003: Leveling the boat and marking the bulkhead placements: To start the leveling procedure we had to first find the water line (DWL) on the bow and transom of the hull. This was done by referring to the plans and measuring down a specified distance from the top of the bow, and down a designated distance from a line drawn on the transom. We examined several ways of leveling the hull, including using transparent tubing filled with water. Finally, after a little brainstorming, we decided to run a line level from a point inside the transom to a point inside the bow planking.
|Roger points to the DWL line drawn on the bow of the hull.||Here Roger shows the DWL drawn on the bottom of the inside of the transom.|
|We inserted a screw eye at the DWL on the transom. We passed a piece of string through the screweye and ran it through a hole in the bow of the boat, also at the DWL.||This photo shows the line coming out of the hole in the front of the boat at the DWL.|
|Here's a shot of the line level right after it was placed on the line. Note that the stern of the hull needed to be raised. We raised the stern with a hydraulic car jack and placed plastic tubs and scrap lumber under the bottom planks.||Another shot of the line level. In order for this method to be accurate, the line must be taut.|
|With the hull level fore and aft, we leveled athwartship. We did this by placing a piece of aluminum angle iron on the gunwales and using a carpenters level.||Next we prepared to mark the position of the bulkheads. We consulted the plans and placed the angle iron back a specified distance from the bow.|
|After making sure that both ends of the the angle iron were equidistant from the bow at the gunwales we fixed the angle iron location with small finishing nails.||Next we took a plum bob and suspended it from the front edge of the angle iron until it touched the hull of the boat. We marked this spot with a magic marker.|
|We continued to move the plum bob across the angle iron until we had half a dozen spots marked on the hull. Here Roger steadies the plumbob before marking a spot.||This is a close-up of the plum bob and a spot being marked on the hull.|
We now have lines marked for the bulkhead locations that are plumb and straight athwartships. The next job will be to spread the bottom beams, tack the hull together in several spots, and install the bulkheads.