Look at engineering leaps that have helped different types of structures go from big to bigger to biggest.
The race is on to become the world’s biggest. Crowned the biggest in their fields, structures like the 600-metre Burj Dubai skyscraper and the 99,000-ton USS Nimitz represent the most cutting-edge advances in architecture and engineering today. But these mind-blowing 21st century constructions would not be possible without the historical breakthroughs that propelled these fields to new heights.


Big, Bigger, Biggest examines the various engineering leaps that helped these structures become historical giants. How did bridges evolve in size from simple bamboo walkways to modern marvels such as Japan’s Akashi Bridge? And what advances have allowed buildings to grow from a few storeys in size to the modern skyscraper?

This episode reveals the engineering breakthroughs behind the US Navys biggest submarine.

At 171 meters long, the USS Pennsylvania is as long as one and a half football fields. She can dive deeper than a thousand feet, sail for 20 years without refueling, and remain submerged for up to 6 months. She carries a crew of 155 men and a deadly nuclear arsenal.

But the USS Pennsylvania wasnt built in a day.

It stands on the shoulders of historic engineering achievements that have allowed it to grow so big. This episode charts the stories of six historic inventions, embodied by landmark machines - giants of the submarine world. One by one, this episode reveals the incredible stories behind these machines and the inventions that drove them ever bigger. Six ingenious leaps forward that enabled Submarines to evolve...from BIG to BIGGER into the US Navys BIGGEST.

Investigate how the crew of one of the worlds earliest submarines - the Turtle - could breathe underwater. See how novel fins were developed to control the direction of the HL Hunley submarine, and how a revolutionary torpedo was designed for the U66 U-Boat. Learn about a groundbreaking nuclear power system that propelled the USS Nautilus through the water, and how innovative techniques enabled the USS George Washington to launch missiles underwater.

This is the ultimate explanation of how ingenious technology enabled the submarine to evolve into the ultimate weapon - the USS Pennsylvania.

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