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Isabella - The Electric Propeller Company
Isabella, Mariner 31 Powered by Electroprop Mariner Serial Hybrid with 4 KW Diesel Generator I purchased Isabella in 1999 and, for the next three years, enjoyed sailing on the Chesapeake Bay with her. In 2002, I hauled her out of the water and began what I intended to be a modest upgrade, which I hoped might take a year or so. Built in 1971, my Mariner 31 Ketch needed a bit of attention. Predictably, the modest upgrade turned into a complete restoration. Over the course of the next nine years, I pulled every wire, every bit of plumbing, every system that wasn’t fiber-glassed to the hull. The house electrical system went from five circuits to fifteen; every incandescent bulb was switched to LED; I installed a freezer; installed an inverter; installed a Force 10 propane heater; installed beautiful bronze ports all around; and brought all the bright work up to the highest standard. When nearly all the ancillary systems were completed, I began wrestling with the question of what sort of propulsion system I wanted aboard. Having removed a 450 lb. Perkins 4107 from the engine compartment, the thought of more or less permanently mounting another diesel monstrosity in the engine compartment had no appeal. So I did my homework. I spent over a year on the web, talking with marine engineers and builders. Many wanted to stay within their own zone of familiarity and were uncomfortable talking about “alternative technology.” Some were excited about vanguard technologies but …