I concur James, this will be mounted on top of the Super Heavy which will have 28 of these Raptor Engines. The Starship section is to be fitted with another 3 engines, these will be vacuum raptors for orbital flight. SN9 is Completed and when the data from SN8 is obtained, he will make the necessary mods to prevent the crash happening. Elon said they Lost pressure in the LOX header tank and if you look, you can actually see the liquid methane burning green prior to the crash land. I personally think this was an 85% success when you think what SN8 Achieved. First time 3 raptors used together, the engine command, the belly flop and skydive, and the operation of the flaps and Engine reignite to get it vertical. It even landed on the Pad ! (although crashed). I'm fairly confident that SN9 will get it right. Speculation is that SN9 will Launch in January
John