LEGO 40912 Sea Serpent is a 241 piece Ideas set with 2 minifigs released in 2026. The GWP is a modern remake of LEGO 6057 Sea Serpent, a Castle set released in 1992. The model recreates a Black Knights ship with a black hull, blue railings, brown deck details, a front-mounted cannon, oars, shields, and a large fabric sail printed with a red sea serpent emblem. It includes two Black Knights minifigures with helmets, weapons, and shields. The set was based on the winning entry from the LEGO Ideas A Twist of Nostalgia challenge.