International Rescue Group's flagship is a 78-foot LOD (length on deck), 75-foot LWL (waterline length) ketch at 97 tons full displacement vessel. We are hauling her out in Rio Dulce, Guatemala in a month and will remove her old unreliable and uneconomic Volvo 450HP diesel (always stupidly overpowered!) and replace with an electric or diesel-electric hybrid system.
We are a charity run by 100% unpaid volunteers so we don't have much money, but some donations have been earmarked for a refit. We are not broke, but we are not rolling with cash either and most of the work will be done by volunteers (especially me). Cost is always a major factor, but we do have an IRG T-shirt, IRG cap and lots of public kudos for the design winner, WHOO-HOO!
Please submit your ideas in the COMMENTS below. Here are the design specifications and objectives:
Location: Rio Dulce, Guatemala
Latest Activity: Sep 6, 2018
NOTES ON DESIGN SPECIFICATIONS
I am frequently asked why most sailboats of this size have 200HP engines; my logic is that the manufacturer is providing enough power to reach hull speed plus reserve. THIS IS NOT REQUIRED IN OUR APPLICATION.
AC or DC? What options are available? What are the trade-offs? There are so many options and ideas. Used 240v AC electric motors are cheap and could be driven directly off the generators. Similarly…Continue