In the last panel, Hiei and Kongou are calling "Grandma" to Warspite, despite of the fact that she's one year younger than Kongou and Hiei.
"Grandma-sama"!Glass houses and stones, you two.Grandma-sama!If you want a translation that carries both respect and intimation then.....What would its translation over here be?Launched in 1913.Launched in 1912.O...ooo-ru? What does that mean? Onee-sama.In my glory days they used to call me the Old Lady.Okay then! In that case, what was your nickname in the old country?