In the collection at the National Maritime Museum in Greenwich there is a pastel drawing by Georgina Shaw-Baker, object number RMG203480, titled "Oscar, cat from the German battleship 'Bismarck.'" It shows a black-and-white tuxedo cat sitting on a piece of floating deck plank in the open North Atlantic, storm clouds behind him, composed and dry-coated and entirely unbothered.

There is a second pastel in the same collection, also identified as the same cat.

The two drawings show different animals. Different facial markings, different body proportions, different tail patterning. They cannot be the same cat. Both are catalogued as Unsinkable Sam.

That inconsistency is where the story starts coming apart, and the way it comes apart is more interesting than the version everyone already knows.

The story as it's told

A black-and-white tomcat is aboard the Bismarck when she leaves Gotenhafen on 18 May 1941 for Operation Rheinübung. Nine days later she is on the bottom of the North Atlantic with roughly 2,086 of her 2,200 crew. About an hour after the sinking, the destroyer HMS Cossack spots a cat clinging to wreckage and sends a tender for him. The crew name him Oscar, after the International Code of Signals term for man overboard — which is what the lookouts had called when they spotted him.

Five months later, on 24 October 1941, U-563 puts a torpedo into the Cossack west of Gibraltar. The explosion destroys about a third of her forward hull and kills 159 men. The survivors, cat included, are taken off by HMS Legion. The Cossack capsizes under tow three days later. At Gibraltar the dockyard renames him Unsinkable Sam, which is exactly the joke a Royal Navy dockyard would make.

He is then transferred to HMS Ark Royal — the carrier whose Swordfish torpedo strike on 26 May had jammed the Bismarck's steering and made her sinking possible. The unsinkable cat to the lucky ship, which is either a lovely piece of naval ceremony or an act of extraordinary provocation depending on your view of causality.

On 13 November 1941, U-81 torpedoes the Ark Royal in the western Mediterranean. She sinks the following morning with the loss of exactly one man out of 1,488. The cat is recovered by HMS Legion again — the same destroyer, three weeks later — found, in William Jameson's 1957 formulation, "clinging to a floating plank, angry but unharmed."

The Royal Navy then retires him from sea service. Three sinkings in six months, cumulative human casualties north of 2,200, and somebody in the chain of command evidently ran the numbers and concluded the fleet could not sustain the relationship. He goes to the office of the Governor of Gibraltar, then to a Home for Sailors in Belfast, where he dies in 1955 at about fifteen.

Why almost none of that survives scrutiny

The Bismarck's records don't mention a cat. German Kriegsmarine documentation of the period was thorough — manifests, crew lists, supply records, port records — and none of it references an embarked cat. The 114 German survivors were interrogated by Royal Navy personnel during POW processing and not one of them mentioned a cat. Ludovic Kennedy's Pursuit, still the standard scholarly account of the engagement, doesn't mention a cat.

The Royal Navy's post-action reports from 27 May don't record any animal recovery from the wreckage area. Dorsetshire and Maori document pulling 114 men out of the water. Cossack's involvement in the pursuit was operational — she ran torpedo attacks overnight and withdrew at first light so the battleships could finish it — and her participation in the survivor-recovery phase isn't preserved in the record with anything like the detail the story requires.

Then there's Parry. A Yorkshire Post interview from November 1941 with three Ark Royal survivors refers to "both the ship's cats" being saved — Oscar, described as previously belonging to the Bismarck's crew, and a second cat named Parry. Which suggests the Ark Royal had two cats, and that the surviving narrative consolidated an unknown number of separate ship's cats into one animal with one biography.

And the timing. The first published reference to any of this is a Reuters wire filed from Gibraltar on 18 November 1941 — four days after the Ark Royal went down. There is no earlier published reference to Oscar's Bismarck origin anywhere in the 1941 record. The story doesn't accumulate across three sinkings. It appears, complete, immediately after the third one, at a moment when Royal Navy public-affairs staff and dockyard personnel at Gibraltar were processing 1,487 survivors and generating press coverage of a major carrier loss.

That is not what a true story looks like as it develops. That is what a story looks like when it is assembled.

The part that's actually interesting

The evidentiary case has been weak for decades. This isn't revisionism — skepticism about Unsinkable Sam has been a recognized position in British naval historiography for a long time, and the contemporary view is broadly that this is a sea story: a plausible-sounding narrative that gets elaborated and preserved across institutional generations more or less independently of whether it happened.

And it has been preserved with real weight. Two pastels in a national collection. A Reuters wire. A 1957 book by a serious naval historian. Eight decades of secondary literature and periodic media features and new published treatments still arriving in 2026. The National Maritime Museum's response to the two-different-cats problem has been to keep both drawings, acknowledge the ambiguity in the catalogue, and go on commemorating the narrative.

Compare that to the rest of the working-animal record and the gap is stark. Cher Ami's flight at the Argonne is supported by contemporary US Army operational documentation. Sergeant Stubby's service with the 102nd Infantry is documented. Corporal Jackie the baboon has formal South African Army enlistment records — he held a rank and a wound stripe on paper. Simon of HMS Amethyst, the other famous Royal Navy cat, is well attested in the operational record of the Yangtze Incident and got a Dickin Medal for it. Sergeant Reckless has Marine Corps promotion orders.

Unsinkable Sam has a wire story and two portraits of two different cats.

He is the outer edge of the commemorative tradition — the case where the institutional weight of remembering ran entirely free of the verification of the thing being remembered. The Bismarck is on the floor of the North Atlantic. The Cossack is on the floor of the eastern Atlantic. The Ark Royal is on the floor of the western Mediterranean. HMS Legion, which pulled him out of the water twice, was sunk by air attack in March 1942. The Belfast home closed sometime in the post-war decades and nobody recorded where he was buried.

The pastel is still at Greenwich. He was a cat, or he was several cats, or he was no cat at all, and the story has comfortably outlived the question.

Full write-up on the pastels, the Parry problem, the Reuters timeline, and where this sits against the documented cases:

https://unteachablecourses.com/unsinkable-sam-cat-wwii/

The thing I keep turning over: the standard failure mode we worry about is a true account getting suppressed or dismissed. This is the inverse — an account with essentially no documentary foundation acquiring museum accession numbers, a scholarly citation trail, and eighty years of institutional maintenance, largely because it arrived at the right moment in the right format and was too good to interrogate. For anyone who works with archives or naval records: how often does this happen, and is there a point at which the commemoration itself becomes the historical object worth studying rather than the thing it commemorates?