[Aktungbby]

Originally Posted by Grumpy Pete

One of those rare instances where not flushing is an improvement.

Originally Posted by propbeanie

... that looks more like someone did NOT follow instructions properly...

Indeed!

Originally Posted by version 1

U-1206 was one of the late-war boats fitted with new deepwater high-pressure toilets which allowed them to be used while running at depth. Flushing these facilities was an extremely complicated procedure and special technicians were trained to operate them. Incorrectly opening valves in the wrong sequence could result in waste or seawater flowing back into the hull.[6]

On 14 April 1945, 24 days before the end of World War II in Europe, while U-1206 was cruising at a depth of 200 feet (61 m), eight nautical miles (15 km; 9.2 mi) off Peterhead, Scotland, misuse of the new toilet caused large amounts of seawater to flood the boat.According to the Commander's official report, while in the engine room helping to repair one of the diesel engines, he was informed that a malfunction involving the toilet caused a leak in the forward section. The leak flooded the submarine's batteries (located beneath the head) causing them to generate chlorine gas, leaving him with no alternative but to surface. Once surfaced, U-1206 was discovered and bombed by British patrols, forcing Schlitt to scuttle the submarine. One man had died of illness a day before the mishap,three men drowned in the heavy seas after abandoning the vessel and 46 were captured.

Originally Posted by version 2

Schlitt and his crew were just nine days into their maiden voyage on board U-1206 when a trip to the toilet went very badly wrong.
After failing to work out how to operate the flush mechanism, Captain Schlitt called for help. Unfortunately the engineer who came to his assistance accidentally turned the wrong valve, and the cabin began to fill up with a mixture of seawater and human waste. ATTN Onkel Neal: We'll need a another VIIC toilet-training video for Wolfpack??!!
The vile cocktail then leaked into the submarine’s battery compartment located directly below, causing a chemical reaction which began to release lethal amounts of chlorine gas.
Left with no other option, Captain Schlitt ordered the crew to blow the ballast tanks and head for the surface. The U-boat’s torpedoes were fired to shed extra weight and increase buoyancy.
But as U-1206 appeared from the depths, it was spotted by a Royal Air Force patrol who began to open fire. The crew scrambled for the dinghies, while Captain Schlitt ordered the U-boat to be scuttled and any secret equipment on board to be destroyed.

BOTTOM LINE: bad plumbing aboard a Uboat is invariably fatal....and that's "the straight poop"!