Which type of rudder may lose its...

Question 1 / 2707066636ee728f7522a1c518da7

Question 1 of 2707066636ee728f7522a1c518da7

Which type of rudder may lose its effectiveness at angles of 10 or more degrees?

Question 1 of 27070

Which type of rudder may lose its effectiveness at angles of 10 or more degrees?

🔍 Key Concepts

• Relationship between rudder angle and water flow (lift and stall) over the rudder • How rudder shape (flat vs. foil-shaped) affects efficiency at larger angles • Which rudder types are more hydrodynamically efficient and which are more basic/older designs

💭 Think About

• Think about what happens to water flow when a rudder is turned too far—does it keep creating more turning force, or does the flow break away and lose lift? • Which of these rudder types is the simplest, least‑shaped design that would be most prone to stalling at relatively small angles? • Among the listed types, which are designed for better performance and control, and which is more of a basic plate in the water?

✅ Before You Answer

• Identify which option corresponds to a simple, non‑foil, non‑balanced slab of steel used as a rudder • Ask yourself: which rudder type would most likely stall early (around 10–15°) because it doesn’t have an efficient hydrodynamic profile? • Eliminate any rudder types that are specifically designed to maintain lift and control at larger angles.

Question 1 of 27070

Which type of rudder may lose its effectiveness at angles of 10 or more degrees?

Balanced spade

Contra-guide

Flat plate

Unbalanced