A ?? RE: Ship Types in the WC universe;

I am listening to a youtube radio drama, 'Wing Commander: Defiant Few'(a battle against a Nephelim incursion) & the story referred to a mercenary fighter wing being transported by a ship called "Arthur Cluston(sp?)"; Does anybody know what kind of ship the Arthur Cluston is? It's referred to a 'fighter transport', but it appears the ship can launch & land fighters & bombers.