I thought the sentinel had serious weight issues - or is that an urban myth?
Anyway, if it does have weight issues, then I can't see the two extra workstations, as quouted in ORACs post, ever being fitted or used!
"....Two more workstations can be added, although for the first operational deployment British planners say they anticipate flying with the basic crew only and concentrating on perfecting baseline tasks.
Due to the aircraft's long endurance but small crew, "Our operators will be required to perform at the top of their game for 12 hr.," Kemsley says. "While there is room for two more [crewmen], we won't routinely carry more than we need."....."