When using an echo sounder in deep water, it...

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Question 1 of 2066636ee928f7522a1c51a536

When using an echo sounder in deep water, it is NOT unusual to encounter which situation?

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Question 1 of 20

66636ee928f7522a1c51a536

When using an echo sounder in deep water, it is NOT unusual to encounter which situation?

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🔍 Key Concepts

• Echo sounder returns in deep water and how multiple layers can create more than one echo • The effect of day vs. night on marine life and the deep scattering layer (DSL) • Difference between instrument error/recalibration issues and normal, expected phenomena

💭 Think About

• Ask yourself what natural changes happen between day and night in the ocean that could affect how sound is reflected back to the ship. • Consider whether a constant, unchanging false echo at the same depth would be more likely from a mechanical fault or a natural phenomenon. • Think about whether regular recalibration every couple of days sounds like a design expectation of modern echo sounders or a sign of something being wrong.

✅ Before You Answer

• Verify which option mentions a pattern that changes between day and night, matching how organisms or layers in the ocean move vertically. • Eliminate choices that clearly describe equipment malfunction rather than normal operational experience. • Check which choice best matches the idea of a secondary, strong return from something below the true bottom or from a migrating scattering layer in deep water.

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Question 1 of 2066636ee928f7522a1c51a536

When using an echo sounder in deep water, it is NOT unusual to encounter which situation?

Back

Question 1 of 20

66636ee928f7522a1c51a536

When using an echo sounder in deep water, it is NOT unusual to encounter which situation?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed