Why Elven Ships

The rules make a big deal about how the maneuverable elven ships like the
Man-of-War are a really neat thing. I don't see why. The main determinant
factor in combat is SR--the only time you really need good MC is when:

You're crashing. (None too common.)

You're ramming. (Elven ships don't have rams.)

Your large weapons are fixed. (Who would do that if turrets were as cheap
as the boxed set makes them? Maybe if you had to allocate extra crew...)

So why in the world does anybody use an underpowered ship like the
Man-of-War? And how does it survive combat? (Especially when the elves get
bawled out for adding more weapons--as written, there's nothing for about
half your crew to do.)

Hemlock