"The ships shown here are operated by maritime pilotage schools like Port Revel, which was accidentally attributed in a recent Reddit post depicting a similar program at Solent University. Both facilities use approximately 1:25-scale commercial vessels—namely tankers, cruise ships, and container ships—ballasted to weigh about five tons to simulate the mass of an actual ship. Their engine and rudder responses are accordingly dulled to simulate the poor maneuverability of the real deal, and top out at about three knots; the pace of a brisk walk."