How Seawater Sabotages Ships: Crash Course Engineering #43

The video explores marine engineering, focusing on the role of shipping in global trade and the challenges faced in marine environments. It covers the complexities of designing ships to withstand ocean conditions, including propulsion, cavitation, corrosion, and marine life fouling. The video also discusses the construction and deployment of ships, highlighting the innovative solutions engineers use to overcome these challenges.

What percentage of global trade is supported by shipping?

• 90%

• 70%

• 100%

• 50%

Which engineering disciplines are essential for marine engineers?

• Aerospace, Civil, and Electrical

• Electrical, Chemical, and Mechanical

• Chemical, Aerospace, and Civil

• Mechanical, Electrical, and Civil

What is the primary goal in marine engineering when dealing with water?

• Ensure watertight design

• Reduce weight

• Enhance aesthetics

• Increase speed

What phenomenon causes damage to ship propellers due to pressure differences?

• Galvanic corrosion

• Fouling

• Cavitation

• Oxidation

What is a common method to prevent galvanic corrosion on ships?

• Applying a thick paint layer

• Increasing ship speed

• Using sacrificial anodes

• Using stainless steel only

What effect does marine life fouling have on ships?

• Increases speed

• Reduces fuel consumption

• Increases fuel consumption

• Makes the hull more aerodynamic

What construction method is used for large ships like oil tankers?

• Building in a floating dock

• Using a dry dock

• Building on land and lifting into water

• Constructing in the ocean