1950-1954 Commonwealth 21 inch torpedo project

Australia\New Zealand

 * 1) Enid (planned 21 inch torpedo)

British colonial authorities in coastal Africa

 * 1) Millicent (planned 21 inch torpedo)

British colonial authorities in the Far East

 * 1) Estelle (planned 21 inch torpedo)

Canada

 * 1) Eunice (planned 21 inch torpedo)

S. Africa

 * 1) Gloria (planned 21 inch torpedo)

UK

 * 1) Victoria (planned 21 inch torpedo)

Netherlands

 * 1) Vincent (planned 21 inch torpedo)

Also see

 * 1) Steel Fish!\Staal Vis!
 * 2) 21 inch Mark VIII Torpedo
 * 3) 18 inch Mark XVI torpedo