Recently I was watching the Discovery Channel show about the salvage operation of the Russian submarine Kursk. At one point they showed a brief view of one of the ships in the area, and I think they said it was a Swedish (?) navy ship keeping an eye on the operation. The ship had the most peculiar shape - more or less stubby a triangle, as wide as it’s long.
Any idea what kind of ship it was, and the reason for such a peculiar shape?