At level it is quite crappy...but later on its a very nice ship.
Mine goes (LVL 103-105 Crew, 111 Gunner) 38 to 39 Knots maybe with a 120crew it will fall down to 37 knots.
Turnrate, damage, reload and spread are very good
the range is...crap, but the only downpoint.
worth buying? Yes, not for a at level crew, but to level lower crews, a SS Crew for example, its a very good ship.