dive! dive! dive!
Der Spiegel has an interesting story regarding the Colombian drug smugglers’ homemade submarines. These have so far been considered a curiosity, but apparently they are becoming more and more common, and the technology is developing fast. The biggest vessel captured so far displaced 46 tonnes, presumably surfaced, with a payload of 10 tonnes. Apparently the current ones, described as the third generation, have a radius of action of 2,500 kilometres; an American admiral is quoted as expecting them to eventually start crossing the Atlantic from northeastern Brazil to West Africa, linking up with the emerging drugs route from there to Europe.