An expansion for 3rd Edition Harpoon, it contains pre-made aircraft, submarine, and ship forms of 10 different countries as well as an ASW scenario generator and playing aids for ASW scenarios.

It includes the following forms:

Canada - Iroquois class, CH-124 Sea King
France - Amethyste class, Georges Leygues class, Le Redoubtable class, Tourville class
FRG - Bremen class, Hamburg class, Lynx Mk88
Japan - Chikugo class, Yushio class, Imp. Yushio class, Shirane class
Norway - Oslo class, Type 210 class
PRC - Han class, Luda class
Sweden - Goteborg class, Nacken class, Vastergotland class
UK - Leander/2TA class, Vanguard class
USA - Arleigh Burke class, Lafayette class, Ohio class
USSR - Delta III class, Delta IV class, Grisha III/V class,
Kashin class, Mirka II class, Pauk class, Yankee I class