Indonesia’s Sunken Submarine

A few years ago, I created a piece about the missing Argentine submarine ARA San Juan. For those that do not remember, back in 2017, the Argentine Navy Type 1700 submarine ARA San Juan disappeared on a voyage from Ushuaia to Mar del Plata. At the time, people thought it may have sunk over the continental shelf where the seafloor was shallow enough the boat could have survived and not imploded. A year later, surveyors discovered the wreck at a much deeper depth east of the continental shelf. But at the time of the loss I made a graphic trying to show how the submarine was much smaller than the standard American submarine, the Los Angeles class, and how much deeper the Los Angeles class can dive.

So when the news broke this week that an Indonesian submarine, KRI Nanggala disappeared north of Bali, Indonesia, I decided to update the graphic. Since I finished the piece, however, the Indonesian Navy discovered the wreck in three pieces at 850 metres, far below even the presumed crush depth of the Los Angeles class. In other words, at that depth there was never any hope to find survivors.

Another 1970s era German-designed U-boat sank, this one was found within days however.

The Indonesia submarine is an even smaller than the Argentine boat, both having an operating depth of about 250 metres—actual depths are generally not disclosed because, well, military secrets. But the graphic shows just how far below that depth the sub’s wreckage rests.

Credit for the piece is mine.

The Sinking City of Jakarta

Everyone is probably familiar with Venice, slowly sinking below the Adriatic. But, did you know the city of Jakarta, Indonesia is also sinking?

The BBC published an informative article about the city’s looming problem and the piece includes several nice graphics. The screenshot below is an interactive timeline of the amount of subsidence, or sinking, in the the Jakarta region. It’s been notably worst along the coast. But the striking part are the forecasts for 2025 and 2050 that place the city in danger.

The coastline at the north has experienced the worst of it
The coastline at the north has experienced the worst of it

Photography of the scale of the subsidence feature throughout the story. And about halfway through is a nice motion graphic piece that attempts to explain the sinking. I am not certain it is the best graphic, after all it references two US NBA stars and I wonder how well known they are. (Whereas everyone clearly knows who David Ortiz is.)

I was aware of Jakarta’s peril, but until reading this article, I had not realised just how imperiled the city really is.

Credit for the piece goes to the BBC graphics department.