The ship I was on was homeported in Yokosuka and I was curious how the Navy's facilities did so I checked the Navy Times. There are 8 Navy vessels on the way to Japan to assist and besides the carrier Ronald Reagan, sent some amphibious and dock landing ships which is good as one of the problems in Haiti was access to unload since the dockage had been severly damaged. It sounds like the 38,000 + military folks we have stationed in Japan are ok. Mooring lines on two attack subs in Guam were snapped but tugs got the subs back to the dock safely.
More here: http://www.navytimes.com/news/2011/03/navy-sends-8-ships-tsunami-relief-031111w/

On the way from patroling the coast of Viet Nam heading back to Japan, we had to run from a typhoon when it took a turn toward. Big seas and we took a 48 degree roll at one point. To surf down a big wave in a 250 ft ship is jaw clenching. I just can not fathom being on a ship and encountering a wave the size of the ones resulting from this quake.