Right! For us ignaramousus can you elucidate on 'charlie horsing' aka 'dimpling'; its just that I see this a lot on modern ships, and it looks as though they're made out of old biscuit tins. As a guess I would think they are the result of modern thin skinned construction.
The "hungry horse" look comes from the use of very thin (3/16ths inch) plating with very closely spaced ribs. This is a very flexible arrangement, and good at riding out blast waves. The downside to this arrangement is that the structure has poor collision characteristics, and is more vulnerable to corrosion.
The reverse (using hulls of up to 15/16ths inch thick with structural members spaced further apart) is physically stronger, and offers better resistance to collision damage and corrosion, but less resistance to shock waves.