Special ships OUTSIDE of the regular BO SHIP TREE lines :
ECL .. declassified .. appears on BUY NEW SHIP list in dockyard
PCL .. premium ship .. purchased with OLIVES from NF item store
PCA .. premium ship .. purchased with OLIVES from NF item store
PBB .. premium ship .. purchased with OLIVES from NF item store
PCV .. premium ship .. purchased with OLIVES from NF item store
EBB .. event ship .. purchased with HONOR MEDALS or event COUPONS
ECV .. event ship .. purchased with HONOR MEDALS or event COUPONS
===============================
ECL(26) Emerald
PCL(32) Tiger
PCA(48) Furious
PBB(61) Dunkerque
EBB(58) Dreadnought
EBB(64) Resolution
EBB(78) Valiant
EBB(86) Hood
EBB(96) Vanguard
EBB(99) Temeraire
EBB(113) Duke of Edinsburgh
ECV(59) Warrior
ECV(77) Victorious
PCV(105) Implacable