Tier I - USS Hurricane, rocket - Calibre (simple), cannon - M242 Bushmaster. Tier II - RF Admiral Grigorovich, rocket PJ-10 BraMos, cannon AK-100 (advanced), grenades - HWHH-003A, antiaircraft - ZM-47. Lot of players reccomend to use tier II ship JS Kurama (DDH-144) instead cause it's moore powerfull of other tier II crafts but there are no rocket launchers, only torpedoes and hell of an antiaircraft systems. Think I'll try it out,What cannon do you use?