If I'm not mistaken, older Murasame-chan is the nameship of the 1958 Murasame-class (hull number DD-107), while baby Murasame-chan is the nameship of the 1994 Murasame-class (pennant number DD-101).
Murasame
1st of the Murasame-class destroyers.
It appears she was taught by a certain person about doing impressions.Murasame (26)
Mother of two. On childcare leave.
Is struggling hard in raising the two of them.Lookie, lookie♪
It's a Mama-dressup!Yaaaay!WAAAAAAAH!I'll show you a little of Murasame's good points♪...when did she even learn about that?Oooh!
You've got it spot on, really!Ah!
Coming, comiiing!