I did it, I've downloaded from this forum (terrain editor's post) ref's Kiel_Scapa_Suez_terrain_mod and Panama_Canal than Nord-Ostsee Canal reworked by TigerKatziTatzi (NOK.RAR) from another post related to kiel canal (sorry I can't remind the title) and I had followed the instruction to merge them in the game (tut_TerrainMod_repacker_)... I don't know about Estrecho de Bosboro. After downloading those files read carefully the tutorial than use Sh3MissionEditor to merge the canals. Good work!
