Luxury Superyacht | POSEIDON 180 This 55 metre motoryacht is particularly innovative in its courageous unusual architecture, designed by Giancarlo Zema for EXTRAORDINARYachts. You can confortably admire the sea landscape from three overlapping decks in the all glass prora where the commands are usually situated. The three external decks follow the shape of the hull uninterruptedly from prora to sterm finally ...