14 000 kg

NAM = NGM x (TAS/GS) = 1300 x (460/300) = 1993 NAM

Enter graph at Fuel price ratio 0.92 …. Across to NAM distance 1993 NAM, then down to the base scale – OPT WEIGHT 204 000kg

Planned TOM 160 000kg – take an extra 44 000kg – but TOM limit 174 000 kg – so you can only  take an extra 14 000 kg