If you're thinking of helicopter ship ops, it's not for the layout of flight decks, but for the workload of the pilot landing on a moving deck. It's no good on its own, though - it's only one of at least 3 Rating Scales you'd want to consider for a safe clearance.
Google search for "DIPES" or "Dynamic Interface Pilot Effort Scale", which is a joint US/UK/Canada/Australia/New Zealand initiative based on Cooper-Harper HQR principles.
And if you'd like someone to do the trials for you, I know some men who can.
