Boat
Flag
Company
Country
Joon Shipping Netherlands
Hydroship A/S, Porsgrunn
Norway
General National Maritime Transport Co., Tripoli
Libya
Croatia Line, Rijeka
Croatia
Kauffahrtei Seerederei Adolf Wiards & Co Germany
Department of Scientific & Industrial Research New Zealand
North Sea Ferries, Hull
UK
Northsea Ferries
Netherlands
Islamic Republic of Iran Shipping Lines
Iran
Holland America Line
Netherlands
MacAndrews & Co., Ltd., London

(differents variants with colors of the stripes)

UK
Bremen Line (Ocean Steam Navigation Co) US
Arab Maritime Petroleum Transport Co., Kuwait

white flag; in bottom purple wave below a black ship, charged with a purple retort outlined white, below an orange globe.

Kuwait
Befrachtungscontor Hamburg Gmbh&Co KG Germany
Bremer Lloyd Germany
Peter Y. Berg Norway
Minoltra
Netherlands
Holland America Line
Netherlands
Venizelos A.N.E.

the house flag of Venizelos is white with the blue parts of a ship (?).

Greece
Garland Navegação Portugal
Cie. Tunisienne de Navigation S.A. (COTUNAV), Tunis
Tunisia
Women on Waves Netherlands
Islamic Republic of Iran Shipping Lines, Teheran
Iran
Andrew Weir Shipping Co. Ltd.
UK
Fransbergen Trading & Shipping Netherlands