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Submarine

By: Lily Giang

Where do you think the U.S places in the world in terms of largest submarine fleets?

SUBMARINE

Why It Was Invented

WHY

- offensive weapon

- aircraft carriers

How It Works

HOW

-ballast tanks filled with water or air

- hydroplanes - short "wings"

- pressurized tanks

1620 - Cornelius Drebbel

1620

- Built an oared submersible

- air replenishment

1776 - David Bushnell

1776

- Turtle submarine

- One-man powered

- dive, surface, and be used in combat

1895 - John P. Holland

1895

- Holland VII

- petroleum engine & electric engine

- Blueprint by world's navies

1904 - Aigrette

1904

- diesel engine

- less volatile, better for economy

Present-Day

2019

- submerged for months

- Some submarines - over 100 people

- nuclear-powered

Future

FUTURE

- longer time underneath water

- Diving capacity

The Impacts of the Submarine

IMPACTS

Social Impact

Social

- more effective, hold more people

- easier to attack enemies

Political Impact

Political

- underwater cables

- territorial waters - surface

Cultural Impacts

Cultural

- can travel underwater

- scientific discovery

Economic Impact

Economic

- investing money

- high-maintenance cost

Recap

RECAP

- holding capacity

- engines for submarines

- created opportunities

Sources

Sources

This concludes my presentation, any questions?

https://www.explainthatstuff.com/submarines.html

https://navylive.dodlive.mil/2016/04/11/eight-things-to-know-about-u-s-navys-first-submarine/

https://www.thoughtco.com/evolution-of-submarine-design-1992490

https://marinebio.org/creatures/tools/submarines/

https://www.globalfirepower.com/navy-submarines.asp

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