Misumi 645/051 RLR(1975) is 10.8m below Attached BM
Documentation added 2011-02-23
Buddy checked with Kuchinotsu - data profiles compare extremely well.
Documentation added 2012-02-21
A massive earthquake magnitude 9.0 occurred at 14.46 JST (05.46 UTC) on Friday 11th March 2011 with epicentre 70km east of the Oshika Peninsula of Tohoku. It was the most powerful known earthquake to hit Japan triggering a tsunami with waves up to 40.5m and travelling up to 10km inland.
Marine Department Japan Meteorological Agency Ote-machi, Chiyoda-ku Tokyo