The shipping industry, a significant contributor to the global economy, serves a variety of customers across the world. From the largest containers ships to riverboats, the industry comprises tens of thousands of ships that perform a number of duties.
While a major portion of the ships is being used for freight transport, cruise ships and ferries take a good share of the remaining part. However, there are few vessels that stand out from the majority due to its unique purposes.
The luxurious private yachts owned by millionaires across the world and various type of marine research vessels are part of the list. In addition, one of the unique types of vessels in the list

