The maritime transportation of spent nuclear fuel and other high-level radioactive wastes requires the use of purpose-built vessels which meet the International Maritime Organization's INF classification standards. These standards were introduced in 1993 and made mandatory in 2001. As of 2020, the list below is limited to active vessels and may not be exhaustive. +Vessels in serviceVesselFlagOwnerYear builtGross tonnageFlask capacityLength overall (m)Breadth extreme (m)Draft (m)Speed in knots (Max)Speed in knots (Average)ReferencesImandra Russian FederationRosatomflot19805806130.517.36.810.47.5Kaiei Maru JapanNuclear Fuel Transport Co. Ltd.2006492410016.55.114.714.1Oceanic Pintail United KingdomNuclear Decommissioning19875271103.9216.6259.78.1Pacific Egret United KingdomPacific Nuclear Transport Ltd.2010677620-2410417.35.512.68Pacific Grebe United KingdomPacific Nuclear Transport Ltd.2010684020-2410417.3612.38.3Pacific Heron United KingdomPacific Nuclear Transport Ltd.2008677620-2410417.35.510.98.5Rokuei Maru JapanNuclear Fuel Transport Co. Ltd.1996491310016.55.51412.8Rossita Russian FederationRosatomflot2011255784144.1108.1Seiei Maru JapanNuclear Fuel Transport Co. Ltd.2019456899.9164.212.310.6Serebryanka Russian FederationRosatomflot1974292510215.033.98.27.4Sigrid SwedenSKB201366941299.518.64.413.49.1Tien Kuang No.1 Taiwan / People's Republic of ChinaTaiwan Power Co.19918345310.74Xin An Ji Xiang People's Republic of ChinaChina National Nuclear Corporation2020961946.85.8 Speeds are based on early voyage data from MarineTraffic.com
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