If Dennis Raedeke is online, perhaps he could share data from his long passages across the Pacific with Wild Wind IV, a close sistership to Chrysalis. It has been very interesting watching the story of Chrysalis. Chrysalis is the first Wild Wind IV that was involved in a fire at the Pachoud shop. I have had several calls from people that were going to cut away the parts melted by the heat and rebuild her. I was lucky that the insurance carried by Dave Pachoud paid for the full rebuild. It also gave me a chance to change several things on the boat. The hulls and the basic boat is the same, except the hulls were lengthened a little. Chryalis is now a beautiful boat. She is lighter than Wild Wind IV . All up Wild Wind IV is about 73,000 #. I have written before about our trip from New Zealand to Seattle, but will write again. For the whole trip we got very close to 2 MPG @ 8 to 8.5 knots running one engine. My Flow Scans are not accurate. During the trip I kept the adjustment of the speed, CPP pitch and RPM so it was always over 1.6 MPG on the Flow Scan. I know that the Flow Scan is not adjusted the same on both sides. When we tried to adjust the Flow Scans in NZ we had adverse conditions. I know that the 2MPG is accurate because on several occasions I fueled right before the trip and right after. At 9.3 knots, which is the faster efficient slow cruise, I get about 1.8 MPG. This is the speed I run most of the time. Above 9.3 the fuel burn climbs fast. I know I should get those Flow Scans adjusted so I can give better info. I just don't sit still long enough. They are very useful to get the best efficiency even if the numbers are not right. Chrysalis has shown CPP's are not needed to have a good boat. The weight and complexity and cost may not be worth it. On the subject of running one engine or two for efficiency, when my fuel test was done in NZ I had the Guru of the gulf do it. He is Len Gilbert. and has been the local NZ expert for many years. When I asked about running just one engine he said he has tested many boats on one engine and it was never more efficient to do so. If you can overcome the fact the prop shaft turns and your transmission and bearings can take it you might have some savings in engine hours. I don't know if he ever checked a cat on one engine. With the CPP's on Wild Wind IV I think I have saved over 2000 engine hours. I know the CPP's make Wild Wind IV more efficient on one engine than two. It also allows me to have the engine running at a better part of the HP curve. The turbo has cut in at that RPM. On a long trip, like from Hawaii to Seattle if both engines had run the whole way I would have had to change oil. I fact when I got to Seattle I had over 50 hours before a change was need. WWIV now has 3000 hours on both engines and has traveled about 45,000 miles. Dennis Raedeke

>>If Dennis Raedeke is online, perhaps he could share data from his >>long passages across the Pacific with Wild Wind IV, a close >>sistership to Chrysalis. > >I have written before about our trip from New Zealand to Seattle, but will >write again. For the whole trip we got very close to 2 MPG @ 8 to 8.5 knots >running one engine. That works out to the same burn rate of 4 GPH (gallons per hour) as Chrysalis experienced. It's great that we've been able to get a better understanding of what fuel consumption is in the real world of trans-oceanic passagemaking in power catamarans. --Georgs -- Georgs Kolesnikovs Power Catamaran World http://www.powercatamaranworld.com