The presidential yacht of Egypt places itself at the 8th rank on this list of superyachts. The El Mahrousa, which means "the protected" in Arabic, took 2 years to build from 1863 to 1865 by the Samuda Brothers from London. This makes the El Mahrousa the oldest superyachts in existence today. Of course, this title came with a lot of maintenance and refitting over the years.
The first modification was an addition to the length of the yacht by 40 feet in 1872 and the second was an additional 17 feet in 1905. During the second refitting, turbine-driven propellers were installed instead of the paddle wheel engines. The length of this old superyacht is now settled at 478 feet. Initially created for the Khedive Ismail who was the Ottoman Governor of Egypt, the El Mahrousa carried three prominent kings of Egypt into exile. The royal history of the country makes this yacht grander.
The El Mahrousa goes out into the sea occasionally for a day or two and was present to inaugurate the new Suez Canal in 2015. This was especially significant as the yacht was also present for the opening of the Suez Canal in 1869. here