science

Mrs Chippy

Mrs Chippy 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 Mrs Chippy rather than just read about it. In short: Mrs Chippy was a male ship's cat who accompanied Sir Ernest Shackleton's Imperial Trans-Antarctic Expedition of 1914–1917. Life Mrs Chippy, a tiger-striped tabby, was taken on board the ship used by the expedition's Weddell Sea party, Endurance, as a ship's cat by carpenter and master shipwright Harry "Chippy" McNish ("Chippy" being a colloquial British term for a carpenter).

Key takeaways

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

Reference excerpt

Mrs Chippy was a male ship's cat who accompanied Sir Ernest Shackleton's Imperial Trans-Antarctic Expedition of 1914–1917.

Life Mrs Chippy, a tiger-striped tabby, was taken on board the ship used by the expedition's Weddell Sea party, Endurance, as a ship's cat by carpenter and master shipwright Harry "Chippy" McNish ("Chippy" being a colloquial British term for a carpenter). The cat acquired its name because, once aboard, it followed McNish around like an overly attentive wife. One month after the ship set sail for Antarctica it was discovered that, despite its name, Mrs Chippy was actually a male. By that time, however, the name had stuck. He was described as "full of character" by members of the expedition and impressed the crew with his ability to walk along the ship's inch-wide rails in even the roughest seas. In Captain Frank Worsley’s diary he describes Mrs Chippy climbing the rigging "... exactly after the manner of a seaman going aloft".

Mrs Chippy's voyage was not without incident. Storekeeper Thomas Orde-Lees, in a diary entry dated 13 September 1914, relates that "An extraordinary thing happened during the night. The tabby cat jumped overboard through one of the cabin portholes and the officer on watch, Lt. Hudson, heard her screams and turned the ship smartly round & picked her up. She must have been in the water 10 minutes or more". The cat was retrieved by the ship's biologist, Robert Clark, using one of his sample nets. After the Endurance became trapped in pack ice and was destroyed, Shackleton decided that Mrs Chippy and four of the sled dogs that had been carried on board would not survive. In a diary entry dated 29 October 1915 he recorded:

This afternoon Sallie's three youngest pups, Sue's Sirius, and Mrs. Chippy, the carpenter's cat, have to be shot. We could not undertake the maintenance of weaklings under the new conditions. Macklin, Crean, and the carpenter seemed to feel the loss of their friends rather badly. McNish was very attached to Mrs Chippy and never forgave Shackleton for having him killed.

Legacy McNish died, destitute, in Wellington, New Zealand, in September 1930, and was buried with full naval honours in an unmarked grave in Karori Cemetery. The New Zealand Antarctic Society placed a headstone on the grave in 1959. In 2004 a life-size bronze statue of Mrs Chippy, funded through public subscription, was added as a tribute and memorial to the carpenter and his much-loved cat. In February 2011, Mrs Chippy and expedition member Perce Blackborow were featured on a postage stamp issued by the South Georgia and the South Sandwich Islands.

Cultural references A novel by Caroline Alexander, Mrs. Chippy's Last Expedition: The Remarkable Journal of Shackleton's Polar-Bound Cat, was published by Bloomsbury in 1997. The book provides an account of Shackleton's Imperial Trans-Antarctic Expedition, covering the period 15 January 1914 to 29 October 1915, in the form of a journal written from Mrs. Chippy's point of view. The final entry recounts Shackleton instructing his crew, now camped on the ice pack following the destruction of their ship, that to ensure their survival "Anything that cannot pull its weight or is not useful to the Expedition must be put down". The book ends poignantly with Mrs Chippy (clearly unaware of the implications of Shackleton's order) relaxing in a tent, reminiscing over past adventures and, after being given a treat of a bowl of sardines, looking forward to assisting with the rest of the expedition. Mrs Chippy was portrayed in the 2002 Channel 4 mini-series Shackleton, starring Kenneth Branagh, with the credits stating that the part was played by 'Mac'.

The painting Mrs Chippy by Wolf Howard shows the cat "about to be shot", while in the background Endurance is depicted trapped in the ice and its crew can be seen launching a small open boat on a rescue mission. The painting was shown in The Stuckists Punk Victorian exhibition at the Walker Art Gallery during the 2004 Liverpool Biennial. Kate Atkinson’s novel Case Histories (2004) features a cat named Mrs. Chippy “after the cat on board Shackleton’s ship Endurance.” An opera for primary school children, Shackleton's Cat by Russell Hepplewhite, was commissioned by the English Touring Opera in 2015. A picture book titled Mrs Chippy the Cat by Susan Brocker and Raymond McGrath was published by Scholastic New Zealand in 2021.

Illustrations

Worked examples

Example 1 — a first encounter with Mrs Chippy

Start with the simplest possible case. Write down what Mrs Chippy 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 Mrs Chippy 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 Mrs Chippy 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 Mrs Chippy

In research: Mrs Chippy 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 Mrs Chippy 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: Mrs Chippy is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1915 animal deaths, Imperial Trans-Antarctic Expedition, Ship's cats, so understanding it makes those chapters shorter.
In everyday life: Look for Mrs Chippy 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 Mrs Chippy in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mrs Chippy 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 Mrs Chippy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mrs Chippy in simple terms?

Mrs Chippy was a male ship's cat who accompanied Sir Ernest Shackleton's Imperial Trans-Antarctic Expedition of 1914–1917. Life Mrs Chippy, a tiger-striped tabby, was taken on board the ship used by the expedition's Weddell Sea party, Endurance, as a ship's cat by carpenter and master shipwright Ha…

Why does Mrs Chippy 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 Mrs Chippy?

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 Mrs Chippy.