The B747-400D is the "Domestic" version of the B747-400. It is meant to fly short, very high density flights, such as Tokyo-Osaka. I believe it seats 568 in a 2 class config and has a range of less than 2000mi, but don't quote me on that. If you want exact numbers, go to Boeing's website and check out the B747-400D section. It doesn't have winglets because they are just simply not needed.