largest semi submersible ship
It operates 19 heavy lift transport ships, the world's largest such fleet. The MV Blue Marlin is the crown jewel among that armada. At 738-feet long, with a gross tonnage of 56,000 metric tons, and a deck larger than two American football fields, it's the largest semi-submersible ship on Earth. The Blue Marlin is outfitted with 38 cabins, accommodates 60 people, and even features a workout room, sauna and swimming facilities.