表述是“The Viper is the smallest Warp-capable vessel used by the Battlefleet Calixis.”
https://warhammer40k.fandom.com/wiki/Viper-class_Scout_Sloop
或者“are among the smallest Imperial starships capable of carrying a Warp Drive”
https://wh40k.lexicanum.com/wiki/Viper_Class_Scout_Sloop
第一个链接抄Rogue Trader: Battlefleet Koronus说是0.95km长度