A digital revolution is sweeping the maritime shipping industry, and it’s bringing blockchain along for the ride. That change is long overdue, according to a report released on September 10 by the Inmarsat Research Programme, a division of the satellite communications company. Despite the estimate that it is a $4 trillion industry, maritime shipping has largely been untouched by the internet revolution, said Nick Chubb and Leonardo Zangaro, authors of “How Startups are Driving the Next Generation of Maritime Trade.”