the stolen sub is southeast of sootopolis city and west of ever Grande city but you have to have dive to find it.
Just Southeast of Sootopolis City, it's underwater so make sure you 1)beat Liza & Tate, 2) got HM08 Dive from Steven
After you find the stolen submarine in Pokémon Emerald you must go to Mossdeep city. There you will obtain the HM Dive.
first beat up team magma in cave by lavaridge then fly to lilycove and the two thugs tell you arche is at slate port to steal sub. after you get there you here cosmo talking to media and sub gets stolen. after that go to lilycove and you are able to get. in
there is no sub. only on Pokemon sapphiere and emerald. you have to defeat Team Magma, not Team Aqua.
Near sootopolis underwater
Well the first hard place to find him is at the harbor in slateport and then he jumps in his stolen sub and goes to a dive spot a little bit north of mosdeep team aquas hideout is off the coast of lillycove
at lilycove city is where i found it out
u follow them
Its underwater and on the map its left and down from evergrande city
yes ,if you want to have it insured when it gets stolen
it is in sootopolis city but under water in satapolis city Museum
It's in a cave under water. It's near sootpolis.