The weather is becoming more predictable. Not predictable enough to order our generators (which have to be craned through the roof of the boat) or complete the mast wiring. However, we were able to make progress on painting, porthole welding, and repairing scuppers.
We are using Amerlock 400/2 as a primer and PSX 700 as the top coat. Both are industrial paints from PPG. It has taken several applications to get accustomed to the paint, and now it's working very well. The Amerlock is watertight with three applications by roller. It cures above 30 degrees, is rain safe in 6 hours (with northern California winds), and hard as steel in 24 hours. The paint takes on a high sheen that is good as a final coat on most work surfaces.
The PSX 700 also cures above 30 degrees, but is ready to recoat in 4 hours. The coating is high gloss, and can be patched without leaving a trace (critical since we cannot get the entire boat prepped at one time with our limited crew). PSX 700 can be recoated without sanding which is a major advantage, and the coverage is excellent. It takes about 6 gallons to coat one side of the boat with Amerlock, and a little more than 2 gallons to cover the same area with PSX 700.
The prep has been minimal. We have numerous rust spots about the size of a quarter, and about a dozen rust problems where two plates meet. Paint used by the previous owner simply washed off, and below this coat of cheap paint was the last coat applied by the Coast Guard. It is tough. No need to scrap or chip this base.