| Notes |
The electric motor, testing the motor, the accumulators, view of movable fins in the prow, the controlling mechanism - the movable fins in the prow, showing torpedo held in position, how the torpedo is released, the self-propelled torpedo, elevation of upper deck, conning tower etc., plan of upper deck or hatch, diagram showing electrical connections, view of twin propellers on concentric gears for torpedo motors, details of torpedo-holder, the balancing weight, making the model watertight, some suggestions, the rudder, experiments and competitions |