Abstract: An apparatus that enables one or more people to simulate on land the action of rowing on water, including the simulation of an oar blade entering into and being extracted from water that is moving relative to a boat, and including feedback on rowing performance and technique. The apparatus includes the same fundamental elements as a real rowing boat, with one or two oar handles 6 per person, a sliding seat 4, adjustable footplate 5 and rigging 7 that supports rowlocks. The inertia, momentum and drag of a real boat are simulated using a damped flywheel. The percentage of torque that is transmitted between each oar handle and this flywheel is controlled using magnetic clutches, and is based upon an analysis of the position and angle of each simulated oar blade.