Leaked reports from the production set of “Game of Thrones” Season 6 suggest that a full-sized ship and a new castle are being constructed for the show. The report has prompted speculation about the Greyjoys being featured prominently in the plot.

[Spoiler alert]

According to a report by WinterIsComing, Linen Mill Studios is building a full-sized ship and a castle for the popular TV series. The construction of a ship has led to speculation that the Greyjoy storyline may be featured in the show next year, but the report also notes that it is still unclear which actors will be seen filming at this location at the moment.

The production crew is returning to Ballintoy Harbor this time around to film scenes, WinterIsComing reports. The location was said to have been used in 2011 to depict scenes of Iron Islands, when Theon (Alfie Allen) returned home to Pyke.

The report suggests that there are indications that characters like Victarion and Euron Greyjoy may be seen in “Game of Thrones” Season 6. Dorne was introduced in a major way in the previous season, and new characters from the kingdom like the Sand Snakes were also introduced. The report suggests that this was done at the cost of neglecting the storyline of the Iron Islands.

One of the newest cast members on the show, Ian McShane, is speculated to play the role of Euron Greyjoy. A list of characters that the actor can play in the next season has been compiled in another report by WinterIsComing. The report states that with the possible death of Balon Greyjoy (Patrick Malahide), the storyline of his succession may now be brought into focus.

Euron is the younger brother of Balon and is said to be a “stereotypical pirate.” McShane is popular for playing the role of the infamous pirate Blackbeard in the movie “Pirates of the Caribbean: On Strangers Tide.” The report, however, notes that the actor is more likely to play Randyll Tarly on the show.

“Game of Thrones” Season 6 is slated to air sometime in April 2016. The cast also includes Peter Dinklage as Tyrion Lannister, Emilia Clarke as Daenerys Targaryen, Maisie Williams as Arya Stark, Sophie Turner as Sansa Stark, Aidan Gillen as Petyr Baelish and Conleth Hill as Lord Varys.