The permanent magnetism of a vessel may...

The permanent magnetism of a vessel may...

Question 1 of 2707066636ee928f7522a1c519e1a

The permanent magnetism of a vessel may change in strength due to __________.

Question 1 of 27070

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Q

The permanent magnetism of a vessel may change in strength due to __________.

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🔍 Key Concepts

• Permanent magnetism vs induced magnetism in a steel ship’s hull • How structural changes or damage can affect a ship’s magnetic field • Which factors are temporary (change with heading or location) and which are long‑term

💭 Think About

• Ask yourself: what creates a ship’s permanent magnetism in the first place, and when does that get altered? • Which of the options clearly describes a temporary magnetic effect rather than a lasting change? • Think about whether cargo or heading changes actually rearrange the ship’s steel structure, or just its orientation in the Earth’s magnetic field.

✅ Before You Answer

• Be clear on the definition of permanent magnetism (fixed, long‑term magnetism in the hull steel). • Identify which choices describe conditions that are mainly related to induced magnetism (dependent on current heading or position). • Check which option(s) truly involve changing the steel structure or stress of the hull, which can alter permanent magnetism.