An OHS-Compliant training course online for riggers and signalers. I-CAB Recognized. This basic rigger and signaler class covers an introduction to rigging, determining load weight, sling angles and stresses, center of gravity, basic hitches, sling types, lifting hardware, below-the-hook-devices, verbal communication, and hand signals. Quiz questions along the way prepare the trainee for the final written examination. Upon completion, gain access to and print off your test, certificate, and a checklist which can be used by your employer to administer the required practical observation.