|| This category is not in use because it has an ambiguous title.
Note: This category page should be empty. All entries should be recategorized under one of the above categories or an appropriate subcategory.
- For the general topic, see Category:Merchant navy.
- For Greece, see Category:Greek Merchant Marine.
- For France, see Category:French Merchant Marine.
- For the United States, see Category:United States Merchant Marine.