Below Deck Ashton Pienaar Is Engaged to Girlfriend Sarah Ashton Under Deck is a popular reality TV show that takes place on a luxurious vessel. Ashton is the charismatic commander, and the show showcases his day-to-day experiences managing the crew and ensuring a smooth sailing experience for the wealthy passengers. Beneath the deck, he faces dramatic situations and navigates complex relationships among the team. The show provides a one-of-a-kind sneak peek into the behind-the-scenes of luxury yacht expeditions and the challenges they bring. Ashton's charm and leadership talents make him an compelling character to watch on Ashton Under Deck.