You have not addressed my question: Why are your "craters" less than half way complete? Where are the other halves?
You are looking at plate tectonics subduction arcs, not impact craters. Noah's flood and silt deposits in Africa have nothing to do with it.
Wow do you have Google earth this is an incredible accomplishment of science they have taken a picture of the entire earth from a car and close up the have map and recorded all the elevations of every mountain they have recorded the depth of all of thee ocean believe me that is not a trench at least not the sides that for a partial circle on both side of that huge trench that was scaped in the ocean floor1800 miles long if you take those two subduction arc and draw a line in the exact direction they travel or just complete the circle I guarantee you they match up and a perfect circle and to your question about a third of is is at the end of the giant trench in the form of a hill and some islands the other side did not make as big of one because of the direction the object hit and to the other how many huge craters have you seen on the bottom of the ocean how is your expertise any better than mine an you name another crater on the bottom of the ocean there is of course the gulf of Mexico but that's not the same thing and the silt the mud and all those things I talked about are all relevant to the aftermath well this has been fun remember you heard it here firstWe have lots of knowledge of crater science. You will need to demonstrate how that knowledge applies or why it’s wrong. Nothing I know can make that very deep trench that erroneously looks like a wall.
Pareidolia describes what is not too dissimilar to seeing this as crater.