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Power for America 2.0’s two axial flux DC drive motors is supplied by battery banks, left, under the galley floor. Right, Capt. Andrew Neuhauser. Below right, crewmembers Rowana Herndon and Janet Snell setting sail.

aluminum frames. An aluminum gridlike structure was fabricated and integrated into the hull to strengthen it and support the free-standing masts. The mast and spars are carbon fiber with a veneer of Port Orford cedar and finished with traditional spar varnish. The mast fittings are primarily aluminum. “The free-standing rig in a schooner like this makes it much easier to pull and set the masts, and the boat tunes easily,” said Neuhauser. John Scarano recounted that the boat has achieved 17 knots with a following sea but normally sails at around 10 knots. The U.S. Coast Guard safety requirements for an inspected vessel, especially one with several banks of batteries, drove up the engineering challenges. Chief among them was choosing the electric propulsion system. In the end, the brothers chose two independent ZF axial flux electric motors drawing power from eight banks of 3.3v batteries. Each bank contains 14 lithium-ion phosphate batteries, primarily located under the main cabin sole. Although wind is the primary power source, there is an abundance of propulsion redundancy on America 2.0. Each electric drive can operate independently. There is a single-drive www.professionalmariner.com

Above, relief captain Rhon Opiela steers the schooner during a sunset cruise from Key West. Below right, Neuhauser gathers on deck with Herndon, sitting, Morgan Rhew and Chris Martin.

200-hp John Deere diesel, with a Twin Disc gear and Walter Marine V-drive. “We’ll only crank up the diesel to keep up the fluids and seals,” said Neuhauser. Whether you are aboard for the sunset sail off Key West, or ashore cheering from Mallory Square, America 2.0 is a beautiful sight to behold. Aboard, there are the wind-filled sails framed by the mast and spars, and the teak deck and mahogany and cedar brightwork gleaming golden in the setting sun. Ashore, you see a classic schooner silhouetted against a red ball sun and crimson sky. • 25

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Pm184 digital edition  

PM184 October/November Professional Mariner

Pm184 digital edition  

PM184 October/November Professional Mariner