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原文传递 Vessel Repair Delivers Tier 4 Mv. Freedom To TVA

题名：	Vessel Repair Delivers Tier 4 Mv. Freedom To TVA
正文语种：	eng
作者：	FRANK MCCORMACK
摘要：	The Tennessee Valley Authority (TVA), a public entity charged with power generation in the Tennessee River Valley, has put a new Tier 4 towboat into service, marking a first for both a government agency and the shipyard that built it. Port Arthur, Texas-based Vessel Repair delivered the mv. Freedom, a 100-by 34-foot towboat with a molded depth of 10 feet 9 inches and a draft of 9.5 feet, to TVA June 29. The Sterling Marine-designed towboat is powered by a pair of Caterpillar 3512E Tier 4 engines from Thompson CAT that each produce 1,341 hp. Those main engines, which are paired to Twin Disc MGX5600 gears from Sewart Supply, turn five-blade Sound propellers that have a 58-inch pitch and an 85-inch diameter. Shane Carman, TVA's manager of river services and coal combustion products, facility management, said he and his team first started exploring the possibility of building a new flagship towboat for the authority back in 2020. "We reached out to a couple different architects to figure out how to go about doing this," Carman said. "Before this, TVA hadn't built a line-haul boat since 1979, so this was new territory for us. We wanted to make sure we did it right."
出版年：	2023
期刊名称：	The Waterways Jouranl
卷：	137
期：	16
页码：	5-6