The diagram below provides an overview of the various sub-systems of the diesel-electric hybrid.

Real life implementations – Watt Knot & Stray Not Far

Waiting to go. A standard Beta Marine 43 with the electric motor attached to the prop shaft. 
Installed in the engine room

The battery bank – 24 wet cell traction batteries sit in their own compartment between the engine bay and the cabin. 
A closer look

The system information panel sits beside the standard morse controller. 
It shows, in this instance, the number of amps being used when in electric drive.
