Kozu Simu 642/099 RLR(1970) is 12.1m below BM Kozu Simu
Documentation added 2006-11-28
sttn flagged - dataset suspect.
Documentation added 2008-03-06
Data for 2007 flagged suspect.
Documentation added 2009-05-05
There is what appears to be a datum shift 2007 onwards relevant data flagged.
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 the epicentre approx. 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.
Japan Oceanographic Data Centre Hydrographic Department, Maritime Safety Agency MLIT Aomi Building 2-5-18, Aomi, Koto-ku Tokyo 135-0064