One hundred years after it carried 1,517 people to their deaths in the frigid waters of the North Atlantic, the Titanic has come home to Belfast. I’m not talking the rusting physical remains of the original, but her digital ghost, a virtual replica resting in the waters in the harbor at Virtual Belfast. I’ve seen the movies, read the books, listened to the history lessons, but nothing brought home the full tragedy and loss of that night like my first sight of the hull’s ghostly silhouette in the murky gloom. You feel the cold in this place. You strain to identify objects looming in the dark. The silent circling of…