The Osa missile boat -- small strike units

I'd like some feedback on the following idea (that
I'm sure has been done and talked about on the list
before, maybe a lot). 

Suppose you build a unit off a small hull, maybe
a corvette, with 1 FC, an SMR, a thrust 4 engine,
and 1 hull box. Suppose further you build a lot
of them and use them to conduct WWI destroyer
torpedo attacks on an enemy battleline. Is that
feasible? How many would you need relative to the
number of ships? The ships would have an FTL drive
so after firing their SMR I have in mind for them
to warm up and jump out.

Thanks!

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