På grund av mitt minne om filmen och dessa utdrag från "The Art of Star Wars: The Last Jedi" är jag benägen att argumentera för att det egentligen är en T-65 X-Wing Starfighter, och inte den uppdaterade T-70 modell. Min dotter mottog bara boken som en present, så jag måste ta en titt när jag kommer hem för att verifiera.
"In February 2013, Doug Chiang painted Luke Skywalker's X-wing starfighter sunk beneath a tropical turquoise sea for The Force Awakens development," the book reads. "The idea would finally bear fruit in July 2014, when Kevin Jenkins returned to the concept in early pitch art. "
"'I wanted to tell a slightly different story: As Rey finds Luke on the island, maybe she stumbles into these caves and upon the X-wing, rather than seeing it from a distance,' Jenkins says," the books reads. "In 2014, he wrote, 'Rey explores the island, trying to understand Luke's self-imposed exile from the universe. She comes across a cave, sunk at high tide within the base of the island. Here she discovers Luke's scuttled T-65 X-wing, rusted and rotting away in the water. It was set alight before it sank. It shows Luke's commitment to his exile, as he destroyed his only means of leaving the planet.' In the end Rian Johnson chose designs more similar to Chiang's initial painting of the sunken starfighter just off the coast of the island." 
En annan sida om Lukas hut på Ahch-To säger att
"Door made from salvaged foil of Luke’s T-65 X-wing." 
Bilden visar tydligt det röda randiga mönstret från vingen av Lukes ursprungliga T-65.