Mostly like a big tube. Front end rounded, the rear tapering to a point. In the usual military configuration they have " tower" a bit like a shark fin on the upper side. Then a few sticking-out bits...
Follow the link below to the "Friends of the Hunley" site, where there are excellent pictures of the Hunley's recovery and close up pictures of her in the preservation tank. Friends of the Hunley is...
There's a medium sized star at the center, and some rocks and dust orbiting the star. It's mostly empty space. Some of the bigger rocks and grains of dust are called "planets", and one of them is...