Get the details on the upcoming crossover between the Below Deck Mediterranean Season 12 and Summer House Season 11 casts. The Summer House Season 11 cast will be yachting with the crew from Below Deck Mediterranean Season 12, proving that summer will be fun. Aesha will also be returning as chief stew, a position that she has been in since Below Deck Med Season 9 after first serving as a stew on Below Deck Med Season 4 and Season 5. Photo: Fiona Goodall/Getty Images; Rich Polk/BravoWhen will the Below Deck Mediterranean Season 12 and Summer House Season 11 crossover air? The Below Deck Mediterranean Season 12 and Summer House Season 11 crossover will air sometime in 2027.