 Little paperwork and qualification is needed to secure a position as a wiper as there are very few preliminary requirements to be found internationally.The only documentation needed is a Merchant Mariners Document (MMD) or a United States approved certification as a wiper.For those looking at work internationally, an International Maritime Organization (IMO) approved document will suffice for employment and will be required for any persons not sailing in the United States; A United States MMD is not recognized by international shipping organizations.