science

Sighted sub, sank same

Sighted sub, sank same is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sighted sub, sank same rather than just read about it. In short: "Sighted sub, sank same" was a signal sent by an American airman during World War II. History Following Nazi Germany's declaration of war on the United States in December 1941, the German Navy's U-boat arm opened an offensive against US commerce on the east coast.

Key takeaways

Sighted sub, sank same belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Sighted sub, sank same to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Sighted sub, sank same from memory before moving on to harder problems.

Reference excerpt

"Sighted sub, sank same" was a signal sent by an American airman during World War II.

History Following Nazi Germany's declaration of war on the United States in December 1941, the German Navy's U-boat arm opened an offensive against US commerce on the east coast. Code-named Operation Drumbeat, German U-boats in January 1942 sank some 30 ships in US coastal waters, totalling some 140,000 tons. The US Navy's response was to instigate air and sea patrols, but with no success, while the U-boats continued to sink merchant ships with impunity. It was against this backdrop that a Hudson of 82 Naval Patrol squadron, operating from Argentia in Newfoundland, sighted and attacked a surfaced U-boat on 28 January 1942. The U-boat disappeared and the pilot, Donald Francis Mason, sent the triumphant signal "Sighted sub, sank same". This was passed on by Argentia commander, Admiral Bristol, to his superiors, Admirals Ingersoll and King. In the face of the other disastrous news from the Eastern Sea Frontier, Mason's report, and his laconic signal, was widely publicized as a success. However, post-war analysis revealed no U-boats destroyed that day, and it was held that Mason was in error in believing he had been successful. Following the war it was even suggested that the story had been fabricated by a Navy publicist, but naval communications records confirm the message.

References Blair, Clay (1996). Hitler's U-Boat War Vol I. Cassell. ISBN 0-304-35260-8. quotation at history.navy.mil

Worked examples

Example 1 — a first encounter with Sighted sub, sank same

Start with the simplest possible case. Write down what Sighted sub, sank same claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sighted sub, sank same before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sighted sub, sank same ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sighted sub, sank same

In research: Sighted sub, sank same appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sighted sub, sank same in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sighted sub, sank same is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1942 quotations, Naval signals, Quotations from military, so understanding it makes those chapters shorter.
In everyday life: Look for Sighted sub, sank same outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Sighted sub, sank same in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sighted sub, sank same means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Sighted sub, sank same out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sighted sub, sank same in simple terms?

"Sighted sub, sank same" was a signal sent by an American airman during World War II. History Following Nazi Germany's declaration of war on the United States in December 1941, the German Navy's U-boat arm opened an offensive against US commerce on the east coast.

Why does Sighted sub, sank same matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sighted sub, sank same?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sighted sub, sank same.