Heller was probably the most prolific ship kits producer in the 70-80's. Just imagine that most of the French Navy ships in service at the moment were available on the catalog ( aircraft carriers Clemenceau and Foch), Jeanne d'Arc helicopter carrier, Duquesne and Suffren missile cruisers, all the escorteurs d'escadre family of destroyers, escorteurs rapides, avisos escorteurs, submarines, patrol boats, etc...
For foreign navies, all the Kriegsmarine major ships were available, pocket battleships, Bismarck and Tirpitz, large cruisers, destroyers, torpedo boats, minesweepers, S-boats, U-boats.
Same for Royal Navy, Illustrious, Colossus, Hood, King George V were on the list, and I probably forget a lot more.
Unfortunately the company was sold several times to owners with a passing interest in kits, and Heller is now almost a thing of the past. Too bad...