Review of Submersion of Japan

first, I enjoyed this movie. Not that i'd watch it twice, but it was easily watchable and I find the harsh reviews quite unjustified. Of course I took this movie as a docu-drama of average craft, not a blockbuster and not the next Godzilla versus Mechagodzilla. The plot is very simple: vanity scientific expedition to ascertain why the private island of some big guy sunk in the ocean shortly reveals how the entire Japan is soon to follow the same sort. It gets the point across about urgency and the limits of "human brotherhood". Everything was quite realistic and to those who think the world would gladly accept tens of millions refugees, dream on boys (and rightfully so)...what if your neighborhood were the recipient? Cinematography is very average, SFX are poor & dated, but that adds to the "docu-drama" angle, reinforced by the many detailed scientific explanations. Acting, era&genre-wise is fair: no Oscar time, but not bunk, either.