The Redlinger and the Elton, both 60-ft Hysucraft (hydrofoil supported catamarans), are survey vessel sister ships designed and built for the United States Army Corps of Engineers. They are serving the Portland Oregon district. Redlingers mission is in Portland along the Columbia River. Eltons mission is in Astoria and out to the Columbia Bar. The vessels have a top speed of 35knots with a cruising speed of 30 knots at 80% power. They can survey at up to 15 knots but typically their work is done at 10 knots. The vessels are designed by Viking Fast Craft Solutions, LLC., Staunton Ill.