I think this might be a callback to a previous part of the story (emphasis mine):

Fubuki was always bright, always cheerful. Ever conscious of her position as the first of the Special Type destroyers, she always strove to set an example for her sisters, to say nothing of the vast armada of younger cousins who followed her epoch-defining class into navies all over the world.

Fubuki may think of the other destroyers based on her design as cousins, but Tashkent clearly has her own opinion of their relationship.

Peter Eng
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Insert humorous comment here.