I processed the Sentinel-3 OLCI product :
with the Thematic Water processing tool: MPH/CHL Processor and got the result image which is Ok by visual inspection:
Then I reprojected the MPH/CHL data to UTM zone 51N projection,but got a very strange ruslut as following:
It seems some parts of the orinignal image is brutly ‘cut’ or ‘zigged’ incorrectly,
The reprojection rusult seems very unreasonable.