[resolutebat]

Japan is incredibly mountainous, of course the transport links are near the coasts because that's the flat part where people actually live. There are sea walls etc built to guard coastal towns, but the size of the tsunami overwhelmed them and at that point you're screwed.

And yes, many buildings are out of code, because Japanese earthquake standards are continually strengthened and virtually anything built more than 20 years ago will not meet the newest set. This is also a big reason why the Japanese prefer to buy new houses.

Of course the disaster could have been handled better, and eg the design of the Fukushima nuclear reactors was particularly bad, but (IMHO) they still did a better job this time than with the Kobe earthquake, where the Yakuza had to step in to help because the government was caught flat-footed by a disaster happening in the "wrong" place.