The Missile Tethys is one of the hidden gems of the EA fleet, as far as I'm concerned. Two on two alliance game, me and Craig against Neil and William, EA and Narn on one side, a Sag, a Nova, a Hyperion, two Olympus and four Missile Tethys (Neil) alongside a Narn fleet compsed of one G'Quan, a Dag'Kar, a Sho'Kar and four Ka'Tan (William, and I chose the fleet because he was about to take two G'Quan and two Rongoth- I wanted him to have a fighting chance)
against my Dilgar- four Targrath and four Omelos, and Craig's stunningly diverse Omega and Warlock.
I could have killed him for that fleet choice, especially as one of the Missile Tethys, on round 1, closed on the Warlock and put a 2-6 crit through the interceptors. Then, adding insult to injury, it moved round the Warlock's flank, survived repeated pulse salvos, and put another two missile volleys into it, withstanding all fire the 4 PL higher ship could put into the little thing. It actually survived- retreated off board, one of the few of the Army of Light who did.
Actually, that's probably the only use for the Haven- to block light attack units. The Corvan's four dice twin arrays don't make it a killer, nor does it's agility- the Haven is more offensive with it's matter cannon.
Oh, who am I kidding. It's a patrol boat. In fact, for some things the civilian patrol boat is more useful.