The 52nd annual Fort Lauderdale International Boat Show in Florida is showcasing a prototype of a personal submarine that can repeatedly take up to three people for a trip down into the deepest part of the Earth, the Mariana Trench.

Called the Triton 36,000, it could be the first submarine since the bathyscaphe Trieste that can bring man to the deepest part of the ocean.

The Trieste took French explorer and inventor Auguste Piccard and U.S. Navy Lt. Don Walsh to the Challenge Deep of the Mariana Trench, more than 10,900 meters deep, in 1960. No other manned submarine dived such depth ever since.

Touted by Florida-based maker Triton Subs as the most advanced submersible, the Triton 36,000 features a spherical glass and a speed that can make the deepest dive in 75 minutes. The borosilicate glass grows stronger as depth pressure increases, according to Engadget.com. It is protected from impact by internal and external acrylic sheaths, according to the maker's website.

The glass took fabricator Rayotek Scientific eight months to cook and cure.

The Triton 36,000 is also equipped with a life support and a wireless fibre optic control and monitoring system.

The Triton's personal submarine is priced at $50 million, according to Discovery Channel.