A power supply and control unit for submersed electric motors includes an enclosure which is jointly connected to the motor of a submersed electric pump and forms a hermetic chamber that contains an electronic power supply that can be connected to the motor. The assembly includes a stop block assembly also is affixed to the brace plate top surface. The control vanes can include at least one xb-axis control vane and at least one yb-axis control vane where the xb axis control vane provides xb-axis control torque on the spacecraft rotated about the xb-axis, and the yb-axis control vane provides yb-axis control torque on the spacecraft when rotated about the yb-axis. One helmet design has a two shell helmet with extension spring alone the longitudinal axis that allows the outer shell to slide and the extension spring has to extend to be effective. The scale can be used to orient and align the cutting block in its proper position relative to the distal end of the femur, and to orient the cutting block parallel with the tibial plateau with the ligaments properly and equally tensed. A monitoring component of the control plane can include a set of event processors for monitoring a workload of the data environment, where an event processor detecting a problem in the data plane can cause a recovery workflow to generated in order to recover from the detected problem.