![Epiphany is one of designer Andy Waugh's most extravagant superyacht concepts, and could become one of the world's most expensive.](https://media.cnn.com/api/v1/images/stellar/prod/160803141350-epiphany-yacht-concept.jpg?q=w_3580,h_2513,x_0,y_0,c_fill/h_447)
Epiphany is one of designer Andy Waugh's most extravagant superyacht concepts, and could become one of the world's most expensive.
![Waugh estimates the boat, if built, could cost as much as $667 million.](https://media.cnn.com/api/v1/images/stellar/prod/160803163809-epiphany-yacht-concept-3.jpg?q=w_1152,h_648,x_0,y_0,c_fill/h_447)
Waugh estimates the boat, if built, could cost as much as $667 million.
![Prospective owners can enjoy an entire deck to themselves, complete with private cinema, jacuzzi, gym and spa, plus library and balcony.](https://media.cnn.com/api/v1/images/stellar/prod/160803141127-epiphany-yacht-concept.jpg?q=w_3508,h_2153,x_0,y_0,c_fill/h_447)
Prospective owners can enjoy an entire deck to themselves, complete with private cinema, jacuzzi, gym and spa, plus library and balcony.
![Guests will be able to enjoy many of the same amenities on the VIP deck below, while residing in one of four huge cabins.](https://media.cnn.com/api/v1/images/stellar/prod/160803140950-epiphany-yacht-concept.jpg?q=w_3739,h_2480,x_0,y_0,c_fill/h_447)
Guests will be able to enjoy many of the same amenities on the VIP deck below, while residing in one of four huge cabins.
![Waugh has designed several superyacht concepts. <a target="_blank" target="_blank">Expedition</a> "is a high-volume 75-meter explorer yacht with unparalleled levels of accommodation," he says. It features a permanent helipad, heli-garage, spa with sauna, steam room and massage room. It also has a private cinema and an infinity pool.](https://media.cnn.com/api/v1/images/stellar/prod/160805170409-e75-05.jpg?q=w_5334,h_2721,x_0,y_0,c_fill/h_447)
Waugh has designed several superyacht concepts. Expedition "is a high-volume 75-meter explorer yacht with unparalleled levels of accommodation," he says. It features a permanent helipad, heli-garage, spa with sauna, steam room and massage room. It also has a private cinema and an infinity pool.
![The 45-meter <a target="_blank" target="_blank">Revolution</a>, he says, pushes boundaries with its trident-style roof that evokes sea gods Neptune and Poseidon, while its logo incorporates Japanese samurai symbology. "It's an aggressively-styled concept intended to be a stark contrast to conventional yacht styling," Waugh says.](https://media.cnn.com/api/v1/images/stellar/prod/160805170450-m02b.jpg?q=w_3508,h_2254,x_0,y_0,c_fill/h_447)
The 45-meter Revolution, he says, pushes boundaries with its trident-style roof that evokes sea gods Neptune and Poseidon, while its logo incorporates Japanese samurai symbology. "It's an aggressively-styled concept intended to be a stark contrast to conventional yacht styling," Waugh says.
![Waugh describes <a target="_blank" target="_blank">Nouveau</a> as "a concept that pushes the boundaries of the yacht aesthetic to an extreme." A water feature runs from the sun-deck Jacuzzi, across the bridge and owner's decks and then down a water-slide into the main deck pool, giving the feeling of being at one with nature and the seascape.](https://media.cnn.com/api/v1/images/stellar/prod/160805170511-n04b.jpg?q=w_3508,h_2192,x_0,y_0,c_fill/h_447)
Waugh describes Nouveau as "a concept that pushes the boundaries of the yacht aesthetic to an extreme." A water feature runs from the sun-deck Jacuzzi, across the bridge and owner's decks and then down a water-slide into the main deck pool, giving the feeling of being at one with nature and the seascape.
![<a target="_blank" target="_blank">Ascendance</a> is "a highly-efficient 111-meter superyacht designed to be 25% lighter than a conventional yacht of similar specification," Waugh explains. Complete with a retractable helipad and intimate "fire-pit" area sunken into the deck to create the ideal sociable environment, it also boasts a swimming pool on the main deck which provides a dramatic waterfall feature to act as a focal point for the rest of the deck.](https://media.cnn.com/api/v1/images/stellar/prod/160905123341-ascendance-andy-waugh.jpg?q=w_3508,h_2480,x_0,y_0,c_fill/h_447)
Ascendance is "a highly-efficient 111-meter superyacht designed to be 25% lighter than a conventional yacht of similar specification," Waugh explains. Complete with a retractable helipad and intimate "fire-pit" area sunken into the deck to create the ideal sociable environment, it also boasts a swimming pool on the main deck which provides a dramatic waterfall feature to act as a focal point for the rest of the deck.